Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [eye]

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

-1
votes
0answers
39 views

Is there a medical treatement for cleaning the nasal passages deeply?

Is there a way for cleaning the nasal passages deeply? I am asking about a safe medical treatement that can clean the sinuses deeply until the ears and up to the passages connecting the sinuses with ...
2
votes
0answers
19 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 ...
0
votes
0answers
25 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)
1
vote
1answer
23 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 ...
0
votes
0answers
121 views

Is mixture of almonds, fennel seeds and rock sugar beneficial for eye sight?

I live in India and I've heard it from my parents, neighbors and many other people that the powdered mixture of almonds, fennel seeds and rock sugar, taken with milk or raw everyday for 2-3 months ...
1
vote
0answers
32 views

Interpreting a diagram of eyeball optics [closed]

A very noob question... Eye diagrams illustrate how the lens bends light to focus it at a single point on the retina, such as directly below. I don't understand this. How can we see if all the light ...
4
votes
0answers
45 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 ...
2
votes
1answer
62 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
votes
1answer
97 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).
1
vote
0answers
22 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?
3
votes
2answers
83 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 ...
1
vote
2answers
27 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?
2
votes
1answer
21 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
vote
0answers
11 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 ...
0
votes
2answers
37 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 ...
1
vote
1answer
53 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 ...
0
votes
0answers
22 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
vote
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
vote
1answer
42 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
votes
0answers
35 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
votes
1answer
36 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
votes
0answers
17 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
66 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 ...
3
votes
0answers
35 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) ...
0
votes
1answer
23 views

How to doctors test for eye damage from a solar eclipse?

Is pupil dilation required to test for any damage caused to the human eye by a solar eclipse?
2
votes
0answers
34 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 ...
2
votes
0answers
44 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 ...
1
vote
0answers
28 views

Do computer lens have side effects? [duplicate]

I was introduced by a spectacles shop about a new technology called computer lens which block blue light that is harmful to eyes. He says it reduces eye-strain for workers who need to be face a ...
8
votes
2answers
194 views

Is Myopia Reversible/Curable?

Myopia, meaning short sightedness is said to develop when eyes are exposed to excessive strain. But what I've failed to understand properly is whether myopia can be reversed or cured in any manner? ...
2
votes
1answer
932 views

Is corneal ulcer contagious?

My father is suffering from corneal ulcer. So, I want to know if it is contagious. Materials on the net are not correct, and proposals in the same article (like this) contradict each other. That's why ...
1
vote
0answers
51 views

Is viral keratitis contagious?

Is viral keratitis contagious? I'm asking, as I'm not getting any authentic material on the net.
1
vote
1answer
53 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 ...
0
votes
1answer
29 views

Carrots of other colors besides orange

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 ...
1
vote
0answers
19 views

Downward Double-Vision

If I focus on the ring in this image (the ring is 1 cm tall on my monitor, I stand 300 cm away, the room is dark, and I cover one eye), I actually see an "8" formed from double-vision where the lower ...
3
votes
1answer
35 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 ?
2
votes
0answers
52 views

Can computers cause issues to retina?

I know working with computers can cause eyestrain and red eyes (and also the Computer Vision Syndrome). But recently I got some messages saying computers and mobile phone displays could cause retinal ...
1
vote
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 ...
1
vote
1answer
402 views

Is it safe to use extremely diluted H2O2 (< 0.1%) On eyes regularly?

According to this study: In 10 human volunteers, the threshold of detection for irritation was about 0.1% when hydrogen peroxide was administered as drops directly to the eye (McNally, 1990). ...
2
votes
0answers
240 views

Why do my tears burn?

When I cry or tear up, my eyes start burning and get red, causing me to tear up more. It helps when I wash my eyes with warm water. I don't understand, because my eyes aren't dry to start with so ...
1
vote
0answers
28 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
vote
0answers
158 views

Why people don't notice the normal blind spot “punctum caecum” in each eye?

I noticed a blind spot in my eye. I made field of vision test and doctor says: "All humans see like you, This is the normal vision". Why did I notice this "blind area" and many other people don't ...
1
vote
0answers
34 views

Can a small monitor + powerful reading glasses be a substitute for a large monitor with same resolution?

Reading or focusing up close puts strain on the eyes and I believe can be bad in the long run. With that in mind, would keeping my monitor at a distance (3-4 feet) and using the right set of "...
1
vote
0answers
473 views

What is the physical meaning of the following two ways of measuring dioptries wrt cylinders?

I was using glasses with the following parameters: left eye: -2.50Dsph -0.75DCyl right eye: -2.50Dsph -0.75DCyl Recently, the optometrist prescribed to me glasses with the following parameters: ...
1
vote
1answer
95 views

Can optic neuritis be recovered 100%?

I had inflammation in the optic nerve. There was deficiency in my field of vision. That's because of multiple sclerosis (ms). Now, I'm cured. My field of vision is good. I can see everything but the ...
2
votes
0answers
52 views

Is having to remove glasses to read normal?

Is it typical that a myopic who wears corrective lenses would need to remove their glasses in order to read or is this an indication that the prescription is wrong.
1
vote
0answers
49 views

Is Near-infrared focused light safe for your eyes?

I found a new product, but I'm afraid it's not safe. Can you help me understand what the safety limits are when it comes to near-infrared light focused on your eyes is? I'm assuming the wavelength ...
4
votes
1answer
823 views

Help reading an eyeglass prescription: What does “PL” or “PC” mean?

I'm trying to purchase glasses online but I cannot figure out what the Spherical value is for the left eye (OS).
4
votes
1answer
57 views

How can I describe my eye weakness (disease) to a doctor?

5 days ago, I found that my right eye does not work properly. The vision of the left eye is better. Here is how I feel: When a person press strongly on his closed eye by his figures or hand, The ...
2
votes
1answer
2k views

Does eyesight significantly vary from day-to-day?

I think I need glasses and my visit to the optometrist has confirmed this. I've never worn glasses, and I'm new to all this, so I don't completely understand how things work. These past few weeks, I ...
1
vote
1answer
344 views

Which suitable eye drop to choose for computer vision syndrome? [closed]

Working and chilling using PC over 10h a day, which results in a very uncomfortable eye condition. My eyes are often quite red and I feel "sandpaper" in the eyes. I see a very big variety of eyedrops -...