Ophthalmology is the branch of medicine that deals with the anatomy, physiology and diseases of the eye.

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476 views

Can we see a single candle X miles away?

Recently I saw a commercial for Centrum that claims you can see the light of a single candle from ten miles away. I was skeptical, but a trip to the internet claims that not only is that true, but ...
3
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0answers
117 views

Are sans serif fonts easier to read than serif fonts? [closed]

Origin of claim is http://alexpoole.info/blog/which-are-more-legible-serif-or-sans-serif-typefaces/. At a quarter down the webpage is a more specific claim tendered, with numerous papers cited. ...
3
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1answer
132 views

Can daily disposable contact lenses be safely re-used?

It is recommended that "daily" contact lenses are to be disposed of after about 8 hours of use. I understand that daily lenses are made from a different material than, say, monthly ones; they are ...
3
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0answers
145 views

Does eye exercises help improve your eyesight? [closed]

I asked the eye doctor if exercises will help my aging vision and he said basically that the benefits of eye exercise are inconclusive. I looked on Skeptics and found that this was discussed 3 years ...
6
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1answer
354 views

If the viewable part of lightning goes from the ground up, why does it look like lightning goes from the sky down? [closed]

According to here, it seems like the visible portion of lightning comes from the ground up; however I watched some slow motion YouTube videos, and it is clear that the lightning appears to be ...
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0answers
50 views

Is anti-glare 'computer' glasses effective at relieving eye-strain? [duplicate]

Does anti glare really works? Got many suggestions from fellow friends who practice medicine Dont use them if you are not experiencing any strain Use them it will be helpful to reduce strain It will ...
6
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0answers
9k views

Can the UltimEyes app improve distance vision?

I came across the Ultimeyes app and am very concerned many people will be throwing away their money. ULTIMEYES® is a non-invasive interactive program designed specifically to improve vision by ...
29
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2answers
1k views

Do cats and dogs only see in grayscale?

Ask most anybody about dogs or cats, and they will repeat the claim that these animals are colorblind. To most, it means greyscale. Is it true that cats (ref 2) and dogs (ref 2, ref 3) only see in ...
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1answer
1k views

Does green cause less eye-strain?

An answerer at Quora claims: Colour vision is a result of cone cells. People with normal vision have 3 cone cell types: red, green blue. Of the 6-7million you have, 45% are green. Therefore, ...
9
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2answers
914 views

Does covering one eye for an extended period of time increase the other eye's function?

One of my friends recently told me he previously had lazy eye. He said the way he cured it was to cover his good eye with an eyepatch for about a week; this caused his other eye's muscles to ...
11
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1answer
415 views

Does turning your eyes away from your monitor once an hour help your eyes' health?

I have read in some sources (sorry, can't remember which), and also been told by my employer-assigned doctor (I can find the doctor again if needed), that it is "important" for people who work at ...
5
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1answer
4k views

Will using auto-darkening welding helmets damage your vision?

I've been told in person, and seen repeated on many a forum, that auto-darkening welding helmets are dangerous and that anyone who uses one eventually needs glasses. However, I have been unable to ...
17
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1answer
1k views

Is it harmful to read while moving?

My dad has always told me not to read things (just books/papers inside the car) while the car was moving. When I asked why, he said that it puts too much strain on your eyes because the book/paper is ...
15
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2answers
3k views

Can blue light from LCD panels cause damage to the eyes?

In Japan there is quite a fad about LCD blue light filtering and how they might help reduce eyestrain, etc. The web site of a major computer accessory manufacturer has an English-language press ...
45
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3answers
4k views

Could an adult mind automatically adjust if a person was to wear glasses that inverted/flipped all vision?

It is known that the human eye anatomy makes it so that all images we see with our eyes are flipped upside down. Without noticing it, at an early age, the brain is adjusted to this. What I mean is ...
9
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0answers
341 views

Was Vincent Van Gogh colour blind? [closed]

An article by Eddie Wrenn, published on Mail Online and titled The incredible images that show how a colour-blind person sees the world (and why it might explain Van Gogh's genius) reports that ...
11
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2answers
8k views

Does the Retina Display cause less eyestrain than other screens?

Many ask whether the Mac Retina display is worth it. At the Apple store, a 15-inch Macbook Pro with Retina costs $2,199 (base) vs. $1,799 for the non-Retina 15" Macbook Pro, and $1,199 for the ...
45
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1answer
70k views

Do human eyes grow after birth?

My friend just assured me that when a person is born, their eyes are at the size they will be for the rest of their life, or, that they do not grow. A Google for this question shows that it has been ...
19
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1answer
4k views

Do Gunnar Glasses reduce eye strain?

In my RSS feeds today, I got an article named Gunnar Glasses Reduce Computer Eyestrain, Are 75% Off for the Next Two Days which links to a previous article about their benefits: Gunnar's website ...
9
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4answers
7k views

Do high refresh rates prevent motion blur on TVs?

Several TV options are available and most sellers tend to convince you that the higher frequency the TV is the better it is. For example this site says: LCD TV manufacturers have tried doubling ...
8
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1answer
576 views

Can we solve most blindness by cadaver donation?

India's total population 118 Crores1. Daily Death - 62389 Daily Birth - 86853 If Daily Dead People Donate their Eyes, within 11 Days All Blinds will be able to see Then in India there ...
35
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2answers
6k views

Are nebulae colored?

The pictures of nebulae are always depicted as vividly colored and with a great variety of colors: Source Omega nebula Source Eagle nebula pillars According to the English wikipedia article on ...
4
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0answers
1k views

Does push-ups on finger tips affect eyesight negatively?

Some time ago I've been told that push-ups on your fingers (instead on fists) can affect eye-sight. The explanation was not clear (something about a lot of nerves in fingertips and pressure on them). ...
12
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3answers
2k views

Are cheap sunglasses bad for your eyes?

Conventional wisdom and tips in magazines often state that you shouldn't buy cheap sunglasses because they don't protect well against UV rays. There are two claims in one here, I am skeptical about: ...
9
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1answer
623 views

Does using a computer affect your eyesight?

I've heard it said very often: Using a computer/smartphone can make you nearsighted. Is it true? Is there good research on the topic?
0
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0answers
127 views

Will looking at the sun make you blind? [duplicate]

Possible Duplicate: Does staring at the sun cause significant, permanent harm? As a child I was told to never look directly at the sun because it can make you blind. However: I have ...
9
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1answer
1k views

Do raster glasses work for improving eyesight?

Similar Questions: Is the Bates Method for improving eyesight efficacious? Strange way of improving eyesight — Could it work? Do raster glasses, like these, work for improving eyesight (if you ...
12
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1answer
928 views

Does “eye black” improve vision under glare conditions?

Some sports people wear "eye black" (black strips on the upper cheek) under glare conditions (sun or stadium lights) to reduce glare. For example, one brand claims it is: used on the field to ...
8
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0answers
361 views

Is there a relationship between yellow and moods?

A commonly held belief in visual arts and graphic design is that colours communicate specific moods. Let's concentrate on the colour yellow, for example here: The color yellow gives one a warm ...
12
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1answer
871 views

Is Lasik corrective eye surgery unsafe?

I was looking into Lasik vision correction surgery and came across an article by a former member of the FDA, Dr. Morris Waxler where he states that he wishes he had never approved Lasik surgery: ...
33
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1answer
22k views

Does wearing prescription eyeglasses weaken your eyes?

I just recently received my first pair of eyeglasses. My eye doctor stated that contrary to popular belief, that wearing the glasses will not weaken my eyes any further. However my sister-in-law ...
7
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1answer
3k views

Were there army experiments to give humans infrared vision?

Disclaimer: Infrared is maybe the wrong term, I took it to mean anything that we do not currently perceive with a longer wavelength than what we see as red. I don't think in the following they refer ...
5
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1answer
913 views

Can reading on a moving vehicle cause retinal detachment?

When I was a child, I was told that reading a book on a moving vehicle (a car or a bus) could cause the retina to detach. I always doubted that, since I could not imagine how it would happen. Is ...
49
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3answers
3k views

Is it possible to cause problems to an aircraft pilot with an “over-the-counter” laser?

I've been admonished not to ever shine a laser into the night sky as it might "dazzle pilots" and potentially bring down airplanes. This seems kind of illogical for a number of reasons: If a plane ...
9
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1answer
929 views

Is looking into a solar eclipse especially dangerous?

I mean looking at a partial or annular eclipse, or before or after totality, and specifically the claim that it is more dangerous than looking into the sun. I've heard two versions of this: It is ...
39
votes
5answers
25k views

Can the human eye distinguish frame rates above 60 Hz?

I know that frame-rates above 60fps all look the same to the human eye. Is that true? Why? If so, why do graphics cards boast anything higher than that?
30
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1answer
15k views

Is watching television in the dark harmful to your eyes?

This is obviously related to a few answered questions already here, namely: Does watching television damage the eyes? Is it harmful to your eyes to read in dim light? But the following question is ...
11
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1answer
462 views

Can a lack of Vitamin A in your diet be statistically proven to be linked to worse eyesight?

Reading this question: Does eating carrots improve your eyesight? - brought to mind a common piece of medical advice in USSR - to eat carrots to prevent your eyesight from going bad (as opposed to ...
27
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1answer
2k views

Does eating carrots improve your eyesight?

A common belief in Sweden is that carrot improve your eyesight and I was told many times when I was little to eat carrots. Although anecdotaly I have perfect vision without carrot-gluttony. Is there ...
10
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1answer
2k views

Does bilberry improve eyesight?

There is a rumor that eating bilberries improves eyesight or, at least, helps to maintain it. Is it true?
29
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2answers
13k views

Reading while lying down is more strenuous (unhealthy) for eyes

My friend heard that reading while lying down is more strenuous (unhealthy) for eyes. I like reading in bed (books, tablet). Is there some study that confirms this hypothesis? I use two positions ...
13
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1answer
2k views

Strange way of improving eyesight — Could it work? [duplicate]

Possible Duplicate: Is the Bates Method for improving eyesight efficacious? I recently read the Bate's Method question and thought of this. A while ago in some forum someone posted a ...
20
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1answer
4k views

Has increased computer use led to increased myopia?

According to ABC News and this Ophthalmological study there has been a significant increase in the number of people with myopic eyesight over a recent 30 year period. From the ABC article: There ...
34
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1answer
1k views

Is it harmful to your eyes to read in dim light?

Is there any scientific backing to the claim that reading in dim light damages your eyes? Related to: Does watching television damage the eyes?
10
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2answers
2k views

Does Iridology work?

Iridology claims that it's practitioners can diagnose various illnesses via looking at the eyes of patients. Is there evidence that supports or debunked their claims?
35
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2answers
15k views

Does staring at the sun cause significant, permanent harm?

Of course, I think I can safely assume if an eye is left pointing directly towards sun for a long period of time it does get major damage. However, staring at the sun also hurts very quickly. That ...
43
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3answers
7k views

Does watching television damage the eyes?

Is there any evidence that watching television for too long or while sitting too close weakens the eyes (leading to myopia, for example) ?
26
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2answers
3k views

Is the Bates Method for improving eyesight efficacious?

The Bates Method is often cited by people looking to avoid wearing glasses, or as an alternative to LAZIK surgery for improving/correcting eyesight. Is the method at all effective? Can eyesight truly ...