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Questions tagged [ophthalmology]

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2
votes
1answer
14 views

Function of the collagen fibres in the vitreous body of the human eye

The vitreous body of the human eye consists of mostly water, but there is also a small percentage of collagen fibres. What is the function of these fibers?
1
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1answer
52 views

Which nerve inflammation can affect vision other than the optical nerve itself?

Which nerve inflammation can affect vision other than the optical nerve itself? Can a nerve inflammation affect vision?
1
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1answer
33 views

Is there a convenient self test for Glaucoma?

I was identified as a glaucoma suspect and told to get rechecked for glaucoma annually. Knowing that glaucoma can move more quickly than that I was spooked and wound up creating my own self test. If ...
2
votes
1answer
73 views

How to reduce the side effects of wearing contact lens? [closed]

This explains a lot of side effect of wearing contact lens. The type of contact lens Iam talking about is silicon hydrogel lenses. Questions: 1) Till how many hours can lens be worn continuously? 2)...
2
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0answers
23 views

Anisohypermetropic amblyopia

Are there any treatments for anisohypermetropic amblyopia? For background information from the American Academy of Ophthalmology: Anisometropic amblyopia is the second most common cause of ...
2
votes
0answers
151 views

Is “voluntary accommodation” common?

I can't find any resource online about what I call "voluntary accommodation": the ability to contract the lens of the eye manually in order to blur or clear the vision. My optician advised me to ask a ...
2
votes
0answers
47 views

My left and right eye have a consistent, clear difference in color perception. Why?

Myself, my brother, and a friend of mine all have noticed independently that our left and right eyes perceive colour differently from the other eye. As compared to my vision with both eyes open, my ...
3
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0answers
50 views

How many times in a lifetime a man can do laser vision/eyesight correction/surgery?

Is it true that laser vision/eyesight correction/surgery is strictly recommended to do only once in a lifetime and if after first laser correction someone's eyesight returned to bad condition the only ...
3
votes
1answer
41 views

why is it not allowed to take aspirin based medicines before a day and after a week of cataract surgery?

my mom had a cataract surgery she used to take daily dosage of UNISTAR 75 which contains aspirin in it but doctor said not to take it for a week. what is the reason behind it ?
0
votes
0answers
29 views

For painting/drawing models, what is the maximum exposure time and maximum light intensity of a spot shining in your eyes at a fixed position?

For painting/drawing models, what is the maximum exposure time and maximum light intensity of a spot shining in your eyes at a fixed position? That is: before the damage to your eyes becomes ...
1
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0answers
19 views

Why can not Myelin sheath be fully rebuilt?

I've joined a group on Facebook. It's about people that have optic neuritis. After recovery, The affected eye is back to its original state. There's always a very very small deficiency in the eyesight....
8
votes
1answer
171 views

Safe and state-of-the art method of laser vision/eyesight correction/surgery?

I have defective vision, particularly shortsightedness. Obviously, it is quite widespread phenomenon. I tried several times to get accustomed to contact lenses, but without success. It irritates my ...
7
votes
1answer
143 views

Is the blue light emitted by computer monitors deleterious for the human eyes?

Is the blue light emitted by computer monitors deleterious for the human eyes? By deleterious, I mean irreversible damage. I read some conflicting information: http://www.drweil.com/health-wellness/...
2
votes
1answer
2k views

What effects would aspheric contact lenses have on eyes without astigmatism?

Aspheric lenses are used for treatment of astigmatism. I am curious what effects might happen if they were used by someone without an astigmatism. What effects would it have on visual acuity? ...
5
votes
1answer
271 views

What is the angular resolution of the 'ideal' human eye?

The visual acuity page on wikipedia suggests 1.8 arcmin @ 1km away (but says nothing about the relationship expected between distance and angular resolution) whilst the page on angular resolution ...
1
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0answers
176 views

Proper treatment of Chalazion draining

I have had a Chalazion on my left upper eyelid for about a month now. It had been growing larger, and recently started to form a white head. I get styes and chalazions fairly frequently, but never ...
1
vote
0answers
51 views

Can aberrometric contact lens correct night halo after a PRK?

The PRK myopia operation has corrected a strong myopic defect (9 degree) in an optical zone of 6mm of diameter. But the pupil is larger than this treated zone on the cornea. This means that the ...
7
votes
1answer
2k views

What causes optical floaters to be more or less visible?

When I first started getting floaters in my eyes (several years ago), my opthalmologist told me that they don't go away but over time your brain learns to ignore them/filter them out. This seems to ...
5
votes
1answer
1k views

Astigmatism eyeglass lenses — how much distortion is normal?

I've been wearing glasses for near-sightedness for almost my entire life but only yesterday got glasses to correct my astigmatism. The world now looks rather distorted. To name two examples, my ...
2
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0answers
36 views

Vision - is Bates method really able to restore one's vision?

Recently I learned about the Bates method but it looks kinda fantasy for me (don't want to offend anyone). Are there people who followed these guides and succeeded in restoring (at least partially) ...
7
votes
1answer
2k views

When someone with glaucoma sees rainbows around lights, what exactly is happening physically?

People with open-angle glaucoma sometimes see halos or rainbows around bright lights (e.g. headlights at night), but not always. Glaucoma results in elevated intraocular pressure and thence pressure ...
8
votes
1answer
261 views

Long-term effects of lens removal as the vitreous ages?

In a case of pediatric cataract surgery where the lens was not replaced, there is no lens to serve as a barrier between the aqueous and the vitreous. I once asked an ophthalmologist what keeps them ...
14
votes
1answer
259 views

How safe are contact lenses?

Are there any side effects to wearing contact lenses for a long time? Is there any way that wearing them can damage your eyes? I'm referring to long-term use that is within or close to the ...
7
votes
2answers
207 views

Outcomes and risks of LASIK surgery

If an individual with poor eyesight undergoes LASIK surgery, will it return the sight exactly to normal? What are the risks of the procedure? Are there any side effects or complications to be ...
6
votes
1answer
196 views

Naturally improve eyesight [closed]

Is there a possibility to improve the deteriorating eyesight naturally? If yes, how is it possible? If the eye sight continues to get worse, is there a chance of losing eyesight completely?
2
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0answers
81 views

Can electronic device help with glaucoma? [closed]

Retinal implants have been used in retinitis pigmentosa to restore some vision when the optic nerve is still intact, and experimental cortical implants when the optic nerve is damaged. Are these ...
17
votes
2answers
24k views

Will eye floaters ever disappear?

According to wikipedia on eye floaters: Floaters are often caused by the normal aging process and will usually disappear as the brain learns to ignore them. Even if this might be the case for very ...