Questions tagged [opthalmology]

For questions concerned with the study and treatment of disorders and diseases of the eye.

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8 views

Hyperemia of conjunctiva increases during evening and near work, why?

My book Parson Diseases of eye 23rd ed says pg141 hyperaemia primarily or as a result of underlying aetiology, causes a sense of discomfort often described as tightness, grittiness, inability to keep ...
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20 views

Are phosphenes not a common ophthalmological phenomena?

I've been able to see them my entire life as far back as I can remember as a child (I am now 31 at this time of writing). I had always assumed this to be something that everyone can perceive, but by ...
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30 views

Do blood pressure and heart rate influence intraocular pressure and to what extent?

I assume the typical situation for an increase in intraocular pressure is this: on the one hand new vitreous is produced, but on the other hand the exit path for vitreous is blocked for one of many ...
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32 views

Does wearing UV blocking glasses worsen myopia in children?

I have found this article which claims (for chicken) that blocking outdoors UV light made myopia worse. Some kids require glasses from a young age, e.g. 6 years old. Most of these glasses do have UV ...
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26 views

Does playing wind instruments cause damage to the eyes overtime?

Found some studies that investigated the IOP's relation to wind instrument playing: one two three. I'm curious because I thought wind instrument playing (as over time it takes endurance to control ...
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86 views

Is the increased intraocular pressure from playing wind instruments damaging to the eye?

People who play wind instruments often practice for hours every day. Some studies (this one as well) mentioned that intra-ocular pressure (IOP) raises during play. Some other studies measured a raise ...
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1answer
162 views

Abnormal shrinkage of the eyeball

Is there a condition which describes an abnormal shrinkage of the eyeball? That is, a counterpart to buphthalmos (an abnormal enlargement of the eyeball).
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1answer
42 views

Flickering/flashing in corner of eye and nausea when exposed to certain patterns [closed]

Before I begin I'd like to say that I've already seen an ophthalmologist who has since referred me to a ophthalmic neurologist. I'm asking because this is freaking me out and I was hoping for some ...
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99 views

Why are topical corticosteroids used in conjunction with an antiviral to treat herpes keratitis?

Herpes simplex keratitis is a viral infection of the eye. Topical antiviral medications are used to treat the virus. Corticosteroids ophthalmic drops are sometimes used as well. But corticosteroids ...
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34 views

Do eye doctors check for tunnel vision?

Whenever I go in for an eye exam, I am subjected to Snellen charts (where the letters only appear in the center of my field of vision), air puffs against my eyes, and a bright light shined into my ...
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152 views

Causes of rapidly-progressing myopia [closed]

Imagine a patient, say, Steve. Steve is 19 years old, and began experiencing signs of myopia at 10 or so. He spent years wearing glasses on and off, and progressed to a -1.5 prescription (with a ...
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1answer
383 views

How does LASIK (laser eye surgery) work?

LASIK, or laser eye surgery, is a surgery which reshapes the cornea to correct sight problems (e.g. short sighted, long sighted, astigmatism). Why can laser (which is simply light) reshape the ...