Questions tagged [eye]

Questions related to diseases that affect the eye, visual acuity, lenses and glasses.

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1
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0answers
38 views

How is micro debris cleaned from the eye in unusual cases?

Sometimes micro debris or "microparticles" are interacting with human's (and animals's) eyes: It can be some types of dust or hair pieces trimmed with a trimmer; I especially mean little particles of ...
2
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0answers
51 views

Why can't we just close our eyes periodically to reduce eye strain?

The 20-20-20 rule I've heard is to stare at something 20 feet away, for 20 seconds, every 20 minutes to help reduce the strain of looking at things up close all day for those of us who need to look at ...
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0answers
24 views

Are focus-related eye diseases like myopia and astigmatism reversible? [closed]

Are those diseases recoverable without surgeries, glasses or contact lens? Maybe by eye exercises? Edit: Once I saw on YouTube a man that managed to recover his eyes from these conditions by eye ...
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1answer
51 views

Can myopia be treated by applying pressure?

I have high myopia in my right eye (~7.00). I've noticed that unsystematically applying pressure onto certain areas of the eyelid onto the eye can actually bring the power down to about 3-5.00 (by ...
106
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6answers
6k views

How can I protect my eyesight when using computers?

My job requires long periods of computer screen use. I have good eyesight (20/15) and don't wear glasses, but I definitely notice my eyes feeling fatigued at the end of the day. Sometimes when I'm ...
1
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1answer
72 views

Does looking at a computer can be good for your eyes?

Let's put aside harmful affects of staring at computer screen, is there any advantage of looking at computer screen for long time ? The reason that I ask this question is this: My mother and father ...
7
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1answer
854 views

What causes the cornea to change shape in astigmatism?

I was diagnosed with astigmatism last summer, I've never had any noticeable vision problems before (I'm 20 years old). The shift from fine to terrible happened quite fast. I've visited an eye doctor, ...
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0answers
27 views

Does the use of eye glasses prevent eye disease?

I'm turning 40 and went for my first eye test recently. They said I have nearsightedness. I work on a computer all day. They gave me three quotes for eye glasses : Option 1: (Cheapest price) 1.1 ...
1
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0answers
22 views

Is there a way to protect eyes from negative effects of computer and mobile screen? [duplicate]

People who work on computer and smartphone during most hours of the day are prone to impacts of the light of these screens. I have read about the negative effects of the light from screen. So I was ...
0
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1answer
37 views

How our brain discharge old CSF? [closed]

Our brain produces new CSF fluid every hour, so old CSF discharge from our body. My question is where is CSF discharge point? or how our brain discharges Old CSF from the brain. . There is a ...
7
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1answer
115 views

What are the official eye colors?

In reading the wikipedia article on eye color, I noticed that the colors listed there seemed a bit arbitrary. Tangentially, I know that even the words we use today to recognize colors are neither old ...
0
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1answer
44 views

Carrots of other colors besides orange [closed]

Are carrots other than orange good for the eyes? Do they contain any vitamin A? I'm mostly just curious about potential foodstuffs that are good for the body & I'm starting with carrots because I ...
2
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0answers
31 views

Does corrective eye surgery for affect the ability to focus similar to corrective lenses?

If corrective lenses adjust the point at which the eyes focus and, for a strong correction, inhibit the ability to focus at the opposing distance, will corrective eye surgery affect vision in the same ...
8
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1answer
471 views

How is the eye score interpreted?

I recently called my Optometrist to get my eye score so that I could buy my own glasses from the chemist. I was expecting to get a "+2" or "+1" or something like that but instead they gave me ...
3
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2answers
43 views

What is the name of a condition where one cannot/can poorly perceive depth for objects moving towards them

I remember a case where someone apparently had great difficulty perceiving the distance of an object if it was (quickly) travelling towards them. Their depth perception was otherwise fine, but when, ...
11
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2answers
22k views

What are the different eyesight measures and how are they related to each other?

While searching about laser surgery for my myopia, I came across different system to measure the quality of individuals' eye sight. When speaking about quality of eyesight, I am referring to the ...
2
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0answers
29 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 ...
12
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1answer
366 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 ...
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0answers
50 views

Does wearing glasses while on the computer increase myopia?

Nearsightedness is prevalent in demographic groups that look at screens for most of their time, such as office workers or students. (Saw et al., 2002) Glasses correct the defocusing of the lens in the ...
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0answers
21 views

Eyelid thickness variation

I am working on a project in which I have to measure inter ocular pressure (IOP) of the eye. Currently, the gold standard to measure IOP is using goldmann applanation tonometer, in which anesthesia is ...
2
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0answers
25 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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0answers
30 views

Increase in lens power [duplicate]

I was allotted spectacles when I was in class 1.My lens power was then $-1$.Now after 12years it has became three times.I don't get why my lens power is increasing at such a fast rate.One reason I ...
4
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0answers
149 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 ...
4
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0answers
85 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
41 views

Does staring at a screen for long periods of time cause myopia?

My uncle once told me "the real reason myopia happens because you look at a PC monitor non stop for hours. When you look to the same object for hours, the eye muscles gets used to the focusing close ...
5
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1answer
57 views

What is a “contact lens fitting”?

When you go to get an eye exam, there is a fee. That fee includes the exam, vision tests, and prescription for glasses, if needed. If you need to get a prescription for contact lenses as well, there ...
1
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1answer
108 views

The next generation of contact lenses

My eyes have the problem of keratoconus and the last 10 years I live using rigid gas contact lenses. The last years piggy-backs. But I am not so satisfied with the precision and accuracy. To be more ...
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0answers
202 views

What are those circles and lines I see when I squint at light?

what are those things I see? It happens when I look at a light source (Such as a light bulb) and the circles are supposed to be smaller on the picture. (I recreated what I see)
8
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1answer
174 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 ...
2
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1answer
75 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)...
4
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1answer
143 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).
3
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2answers
93 views

Which one is better? Reading on a computer, on a tablet, or on paper?

I'm a graduate student and I have to spend a lot of time on reading research papers everyday. My question is which of the following is the best choice for eye health? I can either read them directly ...
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0answers
29 views

Is it normal for it to take more than 3 weeks to get used to astigmatism correcting glasses?

Is it common or realistic in the optometry industry to suggest to someone that it may take 6 weeks to adjust to new glasses?
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2answers
37 views

Is there an antagonistic pair of muscles in the eye? [closed]

One to shorten the lense for near focus, one to lengthen it for far focus? Or is there a single "ciliary" muscle that is either engaged or not?
20
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2answers
32k views

Is Low Blue Light helpful for preserving eyesight?

I'm a coder and interested in save my eyesight. I've met the term named low blue light. Monitors decrease the level of blue color and theoretically protect my eyes. Here's a quote from monitor ...
14
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1answer
533 views

What needs to be exposed for the body to produce Vitamin D?

What parts of the body need to be exposed to sunlight for the body to produce Vitamin D? Some say it's the skin, some say it's the eyes, and some say it's a combination. The most common answer I ...
2
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1answer
27 views

How to diagnose myopia in a 2-year old?

Is there an exam that clearly diagnoses a child myopia level without the need of this child's feedback (as he is not going to give it, given his age (2))? Like, is there a laser exam or something ...
1
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0answers
16 views

Factors Scientifically Shown to Affect Myopia

What are the main factors that have been reasonably established to affect myopia? For example, here is a study which shows that children who spend a lot of time outside have far better eyesight than ...
9
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1answer
20k views

Can crossing my eyes damage them? [closed]

I am able to cross my eyes when I want. Can doing this somehow damage my vision by giving me strabismus?
0
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2answers
42 views

Can spine misalignment be responsible for eye conditions?

Can some eye conditions be explained by a problem in a given spine vertebra? We know that the spine is connected to the nervous system, I already saw some charts connecting each vertebra to an organ ...
0
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0answers
25 views

Eye Chart Lighting for Consistency?

If the goal is consistent test results and controlling for distance is a given, then would a backlight in a dark/darkened room guarantee the most consistent results? Is there any other way to control ...
1
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0answers
12 views

Amount of sunlight and its effect on the eye sight [duplicate]

Are there any studies or commonly understood consensus on how the amount of light and type (different types of artificial vs. sunlight) of light that an individual is daily exposed to affects their ...
1
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1answer
133 views

What VR app that cure myopia? [closed]

Is there an app that can cure myopia, or provide therapy to exercise the eye to focus on objects that "seem" like a certain distance?
2
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0answers
38 views

Closed eyes in darkness vs. light

I've read the closing eyelids helps wet the eyeballs and relieve eye strain at the same time. Is there a difference between us having closed eyes in complete darkness vs. there's light around us? ...
0
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1answer
41 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 ...
2
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0answers
24 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 ...
1
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1answer
9k views

How can doctors remove a stye without damaging the eyeball?

I had a stye, and a doctor used a needle to remove it. The procedure was simple and didn't even cause any bleeding. How is this possible?
2
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0answers
181 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 ...
14
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2answers
311 views

Are there behavioral causes for myopia?

As an adult, I second guess all of my parents' advice, seeing that most of it was ridiculous, but some of them just might have been true. A large swath of it was connected to eyesight: "Don't watch ...
3
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0answers
38 views

Are cheap sunglasses dangerous?

Does having any plastic between your eyes and the environment automatically provide UVA and UVB protection? Or do the lenses actually have to be coated (or be comprised of a special type of plastic) ...