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Title: How to confirm Myopia? Post by: oemBiology on May 20, 2022 Recently within 2 weeks, image appear blurred.
I check with optic shop, they said that shortsight is not stable and keep changing between 400 to 500 Do I get Myopia? I would like to know on what cause the problem and how to treat it? Does anyone have any suggestions? Thanks in advance https://www.aoa.org/healthy-eyes/eye-and-vision-conditions/myopia?sso=y Title: Re: How to confirm Myopia? Post by: bio_man on May 20, 2022 Myopia = Nearsightedness
This is when a person sees near objects clearly while distant objects appear blurred. Nearsightedness can be corrected with eyeglasses or contact lenses that extend the point at which light rays focus. Another option for some nearsighted people is laser surgery. Quote keep changing between 400 to 500 I don't understand this measure, can you explain what these numbers represent? Title: Re: How to confirm Myopia? Post by: oemBiology on May 20, 2022 I am nearsighted with -4 diopters, that keep changing between -4 to -5 diopters,and not stable during test.
-4 diopters (original from glass) Do you have any suggestions on what is going on within eyes under this situations? Thank you very much for any suggestions (^v^) Title: Re: How to confirm Myopia? Post by: bio_man on May 20, 2022 That is no cause for alarm, why is it a concern to you?
Title: Re: How to confirm Myopia? Post by: oemBiology on May 20, 2022 That is no cause for alarm, why is it a concern to you? Does my eyesight get worse? what is going wrong within eye structures for blurred image ? Do you have any suggestions? Thank you very much for any suggestions (^v^) Title: Re: How to confirm Myopia? Post by: bio_man on May 21, 2022 If you test -4, then -5 a few weeks later, then take the average of the two. If you aren't noticing a change in your eyesight, you shouldn't jump to the conclusion that your eyesight is deteriorating. I'm betting that a third reading will be either -4 or -5.
Title: Re: How to confirm Myopia? Post by: oemBiology on May 22, 2022 I suspect that is a false nearsighted , and would like to know on what is the possible cause for this situation within eye's structure.
Do you have any suggestions? Thank you very much for any suggestions (^v^) After checking with doctor, he suspects macular degeneration initially, and require further checking on retina later on schedule. I would like to know on what cause macular degeneration, would staying long in front of computer be the main cause? Do you have any suggestions? Thank you very much for any suggestions (^v^) https://www.youtube.com/watch?v=4qKz-CiI2Lw https://www.youtube.com/watch?v=b1txN7AACU4 https://www.youtube.com/watch?v=ozZQIZ_52YY Title: Re: How to confirm Myopia? Post by: bio_man on May 24, 2022 The cause is still unknown, though people with light-colored eyes or a family history of macular degeneration are more vulnerable. Through research on the mutated gene that causes Stargardt disease, scientists have discovered what they believe to be a genetic trigger for the disease. Researchers have found that 16 percent of macular degeneration patients have alterations in this same gene. Through this growing body of research, many scientists now consider heredity to be a significant risk factor in macular degeneration. Some evidence suggests that smokers - particularly women - and people who spend a great deal of time outdoors without eyewear that offers protection from the sun’s ultraviolet rays may have a higher rate of macular degeneration. Hypertension also appears to increase a person’s risk of developing macular degeneration.
(https://biology-forums.com/gallery/45/6_24_05_22_12_58_36.png) (https://biology-forums.com/index.php?action=gallery;sa=view&id=45130) Vision Loss Due to Macular Degeneration Title: Re: How to confirm Myopia? Post by: oemBiology on May 25, 2022 I would like to know on whether there are more Macular Degeneration cases recently or not as comparing 30 years ago, since we spend more time in front of computer or mobile recently.
Is there any related articles about this issue? Do you have any suggestions? Thank you very much for any suggestions (^v^) Title: Re: How to confirm Myopia? Post by: bio_man on May 25, 2022 I can't find study that suggests macular degeneration having risen over the century. Are you making a blind assumption or is your hypothesis backed by an idea that you heard or read?
Title: Re: How to confirm Myopia? Post by: oemBiology on May 26, 2022 There was not much people using computer and LED equipment before 1990 (30 years ago).
I suspect that blue light is the main source to damage retina, which relate to Macular Degeneration. What do you think? Thank you very much for any suggestions (^v^) Title: Re: How to confirm Myopia? Post by: bio_man on May 26, 2022 Hi oemBiology (https://biology-forums.com/index.php?action=profile;u=94679)
According to this article (https://www.health.harvard.edu/blog/will-blue-light-from-electronic-devices-increase-my-risk-of-macular-degeneration-and-blindness-2019040816365), "blue light from electronic devices is not going to increase the risk of macular degeneration or harm any other part of the eye." If blue light is a concern, however, it can be blocked from your mobile devices and computer monitor. Title: Re: How to confirm Myopia? Post by: oemBiology on Nov 3, 2022 After consulting doctor, he said my eye gets little Pigment Epithelial Detachment, and not require any treatment at this moment,
I would like to know on what cause Pigment Epithelial Detachment, Do you have any suggestions? Thank you very much for any suggestions (^v^) Title: Re: How to confirm Myopia? Post by: bio_man on Nov 3, 2022 The cause could be a result of sneezing really hard, high blood pressure, too much screen time. All these, along with age and physical stress leads to detachment.
Title: Re: How to confirm Myopia? Post by: oemBiology on Nov 4, 2022 sneezing really hard, high blood pressure, too much screen time. I would like to know on what cause high blood pressure with eye, and how to keep blood pressure low. Would high blood pressure cause by bright light or blue light from screen? Does Sun glass / dark-mode (screen) help to reduce the source of light to reduce blood pressure? I already wear anti-blue light glass, does it help as well? Do you have any suggestions? Thank you very much for any suggestions (^v^) Title: Re: How to confirm Myopia? Post by: bio_man on Nov 4, 2022 Quote Would high blood pressure cause by bright light or blue light from screen? No, there's no connection. Quote I already wear anti-blue light glass, does it help as well? That's unnecessary, just lower the brightness of your screen to a minimum. I meant high blood pressure on a systemic level. Title: Re: How to confirm Myopia? Post by: oemBiology on Nov 4, 2022 That's unnecessary, just lower the brightness of your screen to a minimum. I meant high blood pressure on a systemic level. I already reduce brightness of screen to a minimum, would wearing Sunglass help to reduce blood pressure on a systemic level? I would like to know on what cause high blood pressure within eye related to brightness of screen, Do you find any article related to this issue? Do you have any suggestions? Thank you very much for any suggestions (^v^) Title: Re: How to confirm Myopia? Post by: bio_man on Nov 5, 2022 I already reduce brightness of screen to a minimum, would wearing Sunglass help to reduce blood pressure on a systemic level? Certainly not. Again, there's no connection between that and blood pressure. Blood pressure is a systemic issue that is caused by years of poor dieting (i.e. high cholesterol), lack of exercise, etc. High blood pressure has negative effects everywhere, not just one's vision. On a side note, I have seen cases of people with detached retinas caused by violently vomiting. Hence, it's not necessarily high blood pressure that could cause this. Title: Re: How to confirm Myopia? Post by: oemBiology on Nov 6, 2022 I find out that my eye pressure gets higher during a nap,
My left eye get higher pressure, would it be caused by closer to heart? Furthermore, how does liquid get in and out of eyeball? is there any kind of muscles controlling the liquid flow within eyeball? When muscles are tight for not letting liquid out of eyeball, then it increases pressure within eyeballs. Is there any term to describe those muscles? Do you have any suggestions? Thank you very much for any suggestions (^v^) During pupillary examination, doctor uses bright light into my eye in order to exam Pigment Epithelial Detachment, would this bright light hurt retina cell further? Do you have any suggestions? Thank you very much for any suggestions (^v^) Title: Re: How to confirm Myopia? Post by: bio_man on Nov 7, 2022 The central retinal artery brings fresh blood into the eye. It runs through a narrow channel inside of the optic nerve, entering the back of the eye. A branching network of arteries then spreads out from this artery across nearly all parts of the retina.
These blood vessels spread across the inner surface of the retina, and can be seen when an eye doctor looks into the eye through the pupil. Light passes through these vessels before being detected by the retina. Furthermore, the sclera (white part of the eye) is avascular (lacking blood vessels); nutrients come from the choroid and vascular plexi in Tenon's capsule and episclera. The sclera is relatively inactive metabolically and has only a limited blood supply. Some blood vessels pass through the sclera to other tissues, but the sclera itself is considered avascular. Quote During pupillary examination, doctor uses bright light into my eye in order to exam Pigment Epithelial Detachment, would this bright light hurt retina cell further? The bright light is being shined into the eye to observe the central retinal artery. It's only temporary, and hence doesn't cause any damage. Title: Re: How to confirm Myopia? Post by: oemBiology on Nov 8, 2022 What cause the hardness of eyeball? I can test the hardness on eyeball using following approach.
Could blood pressure increase hardness of eyeball? Do you have any suggestions? Thank you very much for any suggestions (^v^) "Finger measurement", two fingers, two steps, you can self-test whether the intraocular pressure is too high. The softness of the lips, the intraocular pressure is normal. As hard as the tip of the nose, the intraocular pressure has risen to mild to moderate. The hardness of the forehead is the same, and the intraocular pressure is already very high. Title: Re: How to confirm Myopia? Post by: taneymc on Nov 8, 2022 High pressure inside the eye is caused by an imbalance in the production and drainage of fluid in the eye (aqueous humor). The channels that normally drain the fluid from inside the eye do not function properly. More fluid is continually being produced but cannot be drained because of the improperly functioning drainage channels. This results in an increased amount of fluid inside the eye, thus raising the pressure.
As a result, the optic nerve in the eye can be damaged by too high of a pressure. People with very thick but normal corneas often have eye pressure measuring at the high levels of normal or even a little bit higher. Their pressures may actually be lower and normal but the thick corneas cause a falsely high reading during measurements. A component of the eye that plays a fundamental role in draining out the aqueous humor is the Schlemm’s canal. It collects the aqueous humor and mediates its transfer from the eye chambers into the blood circulation. The cells on the walls of the canal, endothelial cells, ship the liquid from the inner to the outer side in ‘packages,’ called vacuoles. As the shape and number of the vacuoles reflect the outflow performance, several giant vacuoles are expected in the normal outflow process. Source: https://www.brightfocus.org/glaucoma/article/glaucoma-and-importance-eyes-drainage-system Title: Re: How to confirm Myopia? Post by: oemBiology on Nov 8, 2022 High pressure inside the eye is caused by an imbalance in the production and drainage of fluid in the eye (aqueous humor). The channels that normally drain the fluid from inside the eye do not function properly. More fluid is continually being produced but cannot be drained because of the improperly functioning drainage channels. This results in an increased amount of fluid inside the eye, thus raising the pressure. As a result, the optic nerve in the eye can be damaged by too high of a pressure. People with very thick but normal corneas often have eye pressure measuring at the high levels of normal or even a little bit higher. Their pressures may actually be lower and normal but the thick corneas cause a falsely high reading during measurements. A component of the eye that plays a fundamental role in draining out the aqueous humor is the Schlemm’s canal. It collects the aqueous humor and mediates its transfer from the eye chambers into the blood circulation. The cells on the walls of the canal, endothelial cells, ship the liquid from the inner to the outer side in ‘packages,’ called vacuoles. As the shape and number of the vacuoles reflect the outflow performance, several giant vacuoles are expected in the normal outflow process. Source: https://www.brightfocus.org/glaucoma/article/glaucoma-and-importance-eyes-drainage-system https://www.youtube.com/watch?v=oUMgXR3Hsd4 ForSchlemm's canal, when the trabecular meshwork gets clogged and excess fluid cannot be drained, can this area be massaged to relief those clogged area within trabecular meshwork? Do you have any suggestions? Thanks, to everyone very much for any suggestions (^v^) Title: Re: How to confirm Myopia? Post by: bio_man on Nov 8, 2022 I'm not really sure if a physical massage works.
Current pharmacological therapies for lowering the intraocular pressure in glaucoma include increasing aqueous humor outflow and suppression of aqueous humor production. For example, aqueous humor production is reduced by both topical and systemic carbonic anhydrase inhibitors which decrease the production of aqueous humor by the epithelial cells of the ciliary body. Aqueous humor outflow is increased by prostaglandin agonists that increase outflow mainly through the uveoscleral pathway, possibly through the activation of matrix metalloproteinases, and also through the trabecular meshwork. Other glaucoma medications such as adrenergic agonists decrease outflow resistance through mechanisms that are not completely clear. Current surgical therapies also seek to lower the intraocular pressure by increasing aqueous outflow or decreasing aqueous humor production. For example, ciliary body ablative laser treatments such as cyclcophotocoagulation laser (either transcleral or endopscopic) seek to partially destroy the cililary body to decrease aqueous production. In contrast, laser trabeculoplasty modifies the trabecular meshwork (in a manner still not known) to decrease outflow resistance. Other surgeries such as trabeculectomy, glaucoma drainage implants, and glaucoma shunts (which penetrate the trabecular meshwork and cannulate Schlemm’s canal or create a path through the scleral wall) bypass outflow resistance by shunting aqueous humor through or around the trabecular meshwork. Newer procedures such as canaloplasty (which dilates Schlemm’s canal) and other shunts which seek to open the uveoscleral pathway by creating a mini-cyclodialysis cleft all involve increasing outflow by opening existing aqueous drainage pathways or creating new pathways. I think the current procedure is to use lasers. Please read this excerpt. Source: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3032230/ Title: Re: How to confirm Myopia? Post by: oemBiology on Nov 9, 2022 Intraocular pressure is unstable during daily active,
opening existing aqueous drainage pathways or creating new pathways seems not a good approach, since Schlemm’s canal should have control on when to open and close during properly operation. Is there any well known cause on making Schlemm’s canal not able to drain? When I look at bright light / screen, I feel intraocular pressure, would it be caused by irritating any kind of muscles within eye? so any muscle related to Schlemm’s canal cannot relax and hold muscles tight, which cause not able to drain. Do you find any related articles about this issue? Thanks, to everyone very much for any suggestions (^v^) Title: Re: How to confirm Myopia? Post by: bio_man on Nov 9, 2022 According to this article (https://theophthalmologist.com/subspecialties/unplugging-the-drain),
There have been plenty of attempts to investigate the root cause of this pathological factor in the past with various in vitro and animal models for glaucoma – but nothing gleaned from these studies has been effectively translated into preventing or treating the tissue malfunction. Has your doctor mentioned anything about glaucoma? I suggest you also read the following article https://www.eurekalert.org/news-releases/880638 My suggestion would be to avoid anything that irritates your eyes. Hence, I would reduce screen time if that it causing you irritation. Title: Re: How to confirm Myopia? Post by: oemBiology on Nov 10, 2022 I would like to know on which organ controls the production of aqueous humor, that is constantly produced and drained out from the eye.
Do you find any related articles on how bright light effects production of aqueous humor? Thanks, to everyone very much for any suggestions (^v^) Title: Re: How to confirm Myopia? Post by: bio_man on Nov 10, 2022 Schematic diagram of the ocular structures important in aqueous fluid production and outflow. Aqueous humor is produced by the ciliary body and flows around the iris and out of the eye, passing through the trabecular meshwork and into Schlemm’s canal and the collector channels.
Title: Re: How to confirm Myopia? Post by: oemBiology on Nov 10, 2022 The ciliary body is a circular structure that is an extension of the iris, the colored part of the eye. The ciliary body produces the fluid in the eye called aqueous humor. It also contains the ciliary muscle, which changes the shape of the lens when your eyes focus on a near object.
In bright light, the circular muscles contract whilst the radial muscles relax. This causes the pupil to constrict and less light enters the eye. In dim conditions the opposite occurs. The circular muscles relax and the radial muscles contract, causing the pupil to dilate and allowing more light to pass into the eye. Under bright light, the circular muscles contract. Do you find any articles related to how contracting circular muscles affects the production and outflow of Aqueous humor? Do you have any suggestions? Thanks, to everyone very much for any suggestions (^v^) http://www.thelondonproject.org/?q=eye/knowledge-center/story-eye https://medlineplus.gov/ency/article/002319.htm On the other words, wouldcontracting circular muscles effect ciliary muscle under bright light? so ciliary body produces more fluid in the eye as a result. Ciliary muscle changes the shape of the lens when your eyes focus on a near object. During focusing on a near object, Ciliary muscles is contract or relax, How does the status of Ciliary muscles affects on the production and outflow of Aqueous humor? Title: Re: How to confirm Myopia? Post by: bio_man on Nov 15, 2022 Quote Do you find any articles related to how contracting circular muscles affects the production and outflow of Aqueous humor? Quote How does the status of Ciliary muscles affects on the production and outflow of Aqueous humor? Are they related? I don't think the opening and closing of the iris by these muscles is related to aqueous humor production. Quote On the other words, wouldcontracting circular muscles effect ciliary muscle under bright light? Bright light causes the iris to close. In bright light, the circular muscles contract whilst the radial muscles relax. This causes the pupil to constrict and less light enters the eye. In dim conditions the opposite occurs. The circular muscles relax and the radial muscles contract, causing the pupil to dilate and allowing more light to pass into the eye. (https://biology-forums.com/gallery/45/6_15_11_22_9_45_00.jpeg) (https://biology-forums.com/index.php?action=gallery;sa=view&id=45920) Title: Re: How to confirm Myopia? Post by: oemBiology on Dec 21, 2022 Aqueous humor is produced by the ciliary body and flows around the iris and out of the eye, passing through the trabecular meshwork and into Schlemm’s canal and the collector channels. I find out a quick approach to reduce Intraocular pressure instantly and temporary 1) Before the hardness of eyeball become harder as hard as the softness of the nose 2) massage your face closing to eye area 3) swallow saliva 4) After the hardness of eyeball become softer as hard as the softness of the lips I would like to know on what happen in Schlemm’s canal with this exercise Do you have any suggestions? Thanks, to everyone very much for any suggestions (^v^) Title: Re: How to confirm Myopia? Post by: bio_man on Dec 22, 2022 Quote I find out a quick approach to reduce Intraocular pressure instantly and temporary You mean this method is working for you? I'm not sure how that relates to the canal of Schlemm Title: Re: How to confirm Myopia? Post by: oemBiology on Dec 22, 2022 You mean this method is working for you? I'm not sure how that relates to the canal of Schlemm Like what I said, "Yes", but the hardness of eyeball become softer ONLY temporary, since Aqueous humor keeps producing by the ciliary body, as I keep looking at PC monitor. You can try, there is nothing hurt by this exercise :) I just wonder on what keep ciliary body producing aqueous humor at this situation. Do you find any related ariticle about this issue? Thank you very much for any suggestions (^v^) Title: Re: How to confirm Myopia? Post by: bio_man on Dec 23, 2022 Quote I just wonder on what keep ciliary body producing aqueous humor at this situation. Maybe that's not the correct explanation regarding what you're experiencing. That's why I'm reluctant to response. You're applying pressure to your eyes with your fingers, and in turn you're feeling a sense of temporary comfort -- it could have nothing to do with aqueous humor production Title: Re: How to confirm Myopia? Post by: oemBiology on Dec 23, 2022 Referring to following statement, outflow system seems related to blinking eye movement, since watching monitor would reduce the frequency of blinking eye movement, would it reduce the outflow of aqueous humor? and cause increasing Intraocular pressure.
Would it be correct mechanism? Do you have any suggestions? Thanks, to everyone very much for any suggestions (^v^) "Aqueous flow through the outflow system has long been regarded as a passive phenomenon as noted above, but a recent model proposes that the outflow system acts as a biomechanical pump.15 The outflow system is constantly subjected to oscillatory pressure transients caused by the ocular pulse, blinking and eye movement.84 In this model, elastic and contractile tissues of the trabecular meshwork and valves within Schlemm's canal stretch in response to transient pressure increases. The energy stored during distention is released when the pressure transients decay, causing the tissues to recoil to their prior configuration. The pressure transients thus enable energy-dependent pulsatile fluid movement through the outflow system." https://www.sciencedirect.com/topics/medicine-and-dentistry/aqueous-humor-flow Title: Re: How to confirm Myopia? Post by: oemBiology on Dec 29, 2022 "Can Bright Light Damage Your Vision?
In short, yes, staring at bright lights can damage your eyes. When the retina’s light-sensing cells become over-stimulated from looking at a bright light, they release massive amounts of signaling chemicals, injuring the back of the eye as a result." Would those massive amounts of signaling chemicals cause increasing Intraocular pressure? Do you have any suggestions? Thanks, to everyone very much for any suggestions (^v^) https://www.gersteineye.com/blog/2018/08/how-does-bright-light-affect-your-vision/ Title: Re: How to confirm Myopia? Post by: bio_man on Dec 29, 2022 Quote "Aqueous flow through the outflow system has long been regarded as a passive phenomenon as noted above, but a recent model proposes that the outflow system acts as a biomechanical pump.15 The outflow system is constantly subjected to oscillatory pressure transients caused by the ocular pulse, blinking and eye movement.84 In this model, elastic and contractile tissues of the trabecular meshwork and valves within Schlemm's canal stretch in response to transient pressure increases. The energy stored during distention is released when the pressure transients decay, causing the tissues to recoil to their prior configuration. The pressure transients thus enable energy-dependent pulsatile fluid movement through the outflow system." That's an interesting find! Quote would it reduce the outflow of aqueous humor? and cause increasing Intraocular pressure. No and yes, respectively. Again, we cannot blame this on the outflow of aqueous humor since we don't have evidence to suggest it does. Quote In short, yes, staring at bright lights can damage your eyes. When the retina’s light-sensing cells become over-stimulated from looking at a bright light, they release massive amounts of signaling chemicals, injuring the back of the eye as a result." Quote Would those massive amounts of signaling chemicals cause increasing Intraocular pressure? Possibly, if the retinal tissue becomes inflamed, your eye would experience increased from that region. But we're talking about extremely bright light, not the kind your monitor produces Title: Re: How to confirm Myopia? Post by: oemBiology on Jan 2, 2023 Possibly, if the retinal tissue becomes inflamed, your eye would experience increased from that region. But we're talking about extremely bright light, not the kind your monitor produces If retinal tissue becomes inflamed, would eye become much more sensitive to bright light, correct? I get yellow-orange color glass to block blue light, but it cannot block bright light. My Intraocular pressure increase as I sit in front of computer. would Sun glass help to reduce bright light under this situation? in order to reduce Intraocular pressure. Furthermore, is there any drug helping to reduce inflammation on retina? Do you have any suggestions? Thanks, to everyone very much for any suggestions (^v^) Title: Re: How to confirm Myopia? Post by: bio_man on Jan 2, 2023 Quote If retinal tissue becomes inflamed, would eye become much more sensitive to bright light, correct? I was thinking the opposite, it's been less sensitive to bright light. Quote Sun glass help to reduce bright light under this situation? Yes, sunglasses do block light. Quote Furthermore, is there any drug helping to reduce inflammation on retina? You could try ibuprofen (Advil) or salicylic acid (Aspirin) Title: Re: How to confirm Myopia? Post by: oemBiology on Jan 3, 2023 I was thinking the opposite, it's been less sensitive to bright light. If retinal tissue becomes inflamed, how does it affects the production and outflow of Aqueous humor under bright light? Would the production and outflow of Aqueous humor increase or decrease? Do you find any related articles about this issue? Thanks, to everyone very much for any suggestions (^v^) Title: Re: How to confirm Myopia? Post by: bio_man on Jan 3, 2023 The retina and aqueous humor, from my knowledge, do not communicate with one another. If there is a drainage problem, the eyeball will put pressure on the retina, causing damage.
(https://biology-forums.com/gallery/46/6_03_01_23_9_36_58.jpeg) (https://biology-forums.com/index.php?action=gallery;sa=view&id=46056) Title: Re: How to confirm Myopia? Post by: oemBiology on Jan 9, 2023 I keep monitoring the Intraocular pressure, once it gets higher, I stop staying in front of computer.
My eye is easily getting little painful, as eye muscle is contracting too much during focusing. Intraocular pressure seems not high at this situation, and I would like to know on what kind of eye muscle is working and cause little painful. Once I close my eye and focus to relax eye muscle, then painful feeling would be gone within 20 - 30 minutes. Does anyone get any idea on what is going on within eyeball? Thanks, to everyone very much for any suggestions (^v^) Title: Re: How to confirm Myopia? Post by: bio_man on Jan 13, 2023 Hi oemBiology (https://biology-forums.com/index.php?action=profile;u=94679)
Have you been tested to see if you have glaucoma? I looked up online that eye pain or pressure is associated with glaucoma, and subsides when relaxed within 20-30 mins, like you reported. Title: Re: How to confirm Myopia? Post by: oemBiology on Jan 15, 2023 Hi oemBiology (https://biology-forums.com/index.php?action=profile;u=94679) Have you been tested to see if you have glaucoma? I looked up online that eye pain or pressure is associated with glaucoma, and subsides when relaxed within 20-30 mins, like you reported. "Glaucoma is associated with characteristic damage to the optic nerve and patterns of visual field loss which principally involves the loss of retinal ganglion cells (RGCs). " https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5106492/ I did test on eye exam last time, it only show very little area (pop up - I don't know what term should be described) on retina at early stage, and also did the test on Glaucoma, and I did not see any blind spot at this moment. I keep monitoring Intraocular pressure, after using warm water washing and massaging my face, Intraocular pressure drops immediately. I would like to know on how trabecular meshwork and Schlemm’s canal works together, 1) would getting stress from bright light make muscle (trabecular meshwork and Schlemm’s canal) tight and not able to relax and let Aqueous humor flow out of the eye? 2) would looking in front of computer (close object) make muscle (trabecular meshwork and Schlemm’s canal) tight and not able to relax and let Aqueous humor flow out of the eye? Before sleeping, I confirm that Intraocular pressure is normal, once I close my eye for a period, I get no idea on why Intraocular pressure increases without bright light at all. Aqueous humor is produced by the ciliary body and flows around the iris and out of the eye, passing through the trabecular meshwork and into Schlemm’s canal and the collector channels. I might know where the pain comes from, it maybe increasing Intraocular pressure on retina, and I would like to confirm on whether retina can feels pain or not from increasing Intraocular pressure. Do you find any related article about this situation? Thank you very much for any suggestions (^v^) Title: Re: How to confirm Myopia? Post by: bio_man on Jan 16, 2023 Quote I might know where the pain comes from, it maybe increasing Intraocular pressure on retina, and I would like to confirm on whether retina can feels pain or not from increasing Intraocular pressure. The retina cannot feel pain, no pain receptors there. Quote Before sleeping, I confirm that Intraocular pressure is normal, once I close my eye for a period, I get no idea on why Intraocular pressure increases without bright light at all. To understand you better, you do feel pressure when you close your eyes in the dark too? Quote I keep monitoring Intraocular pressure, after using warm water washing and massaging my face, Intraocular pressure drops immediately. I would like to know on how trabecular meshwork and Schlemm’s canal works together, Beyond from what has already been discussed, I'm not entirely sure. Maybe in bright light, the muscles in the iris contract, causing neighboring tissue to feel strain; but even if that is the case, it wouldn't increase pressure. Title: Re: How to confirm Myopia? Post by: oemBiology on Jan 16, 2023 he retina cannot feel pain, no pain receptors there. what structure has pain receptors within eyeball? To understand you better, you do feel pressure when you close your eyes in the dark too? Yes, I close my eye in the dark, Intraocular pressure increases without bright light at all. -------------------------------------------------------------------------------- I guess that case 2 is more likely causing the problem, due to not able to relax muscle to drain out Aqueous humor effectively, which cause Intraocular pressure to increases 1) Aqueous humor is produced by the ciliary body and flows around the iris (Normal) 2) Aqueous humor out of the eye, passing through the trabecular meshwork and into Schlemm’s canal and the collector channels. (Blocking) Do you have any suggestions? Thank you very much for any suggestions (^v^) Title: Re: How to confirm Myopia? Post by: bio_man on Jan 18, 2023 The cornea, in the front of the eye, has more pain receptors per square inch than anywhere else in the body.
Quote 2) Aqueous humor out of the eye, passing through the trabecular meshwork and into Schlemm’s canal and the collector channels. (Blocking) Yes, possibly. Title: Re: How to confirm Myopia? Post by: oemBiology on Jan 20, 2023 The cornea, in the front of the eye, has more pain receptors per square inch than anywhere else in the body. Cornea is in front of eyeball, but pain is located at the back of eyeball, would it be any muscle around retina? (https://my.clevelandclinic.org/-/scassets/images/org/health/articles/8567-2077.ashx?la=en&hash=4F52B223DF299E4E5277B4B616A7AB0ED86755D5) Yes, possibly. Blinking eye movement seems to be an efficiency approach to reduce Intraocular pressure, I would like to know on what cause blocking around those area ( through the trabecular meshwork and into Schlemm’s canal and the collector channels).Do you find any related articles about this blocking issue? Thank you very much for any suggestions (^v^) |