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16 votes

Is Low Blue Light helpful for preserving eyesight?

There are two mechanisms of action how light affect humans discussed here: Amount of energy: shorter (blue) wavelengths are more energetic than lower (red), so it can be assumed that they damage ...
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  • 375
6 votes

What causes the cornea to change shape in astigmatism?

The specific cause of astigmatism is unknown. It can be hereditary and is usually present from birth. It can decrease or increase over time. - American Optometric Association You might've had it ...
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5 votes
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Can crossing my eyes damage them?

It is actually a pretty common myth that crossing your eyes too much or for too long will make them get stuck that way. Crossing your eyes does look very similar to strabismus which is an actual ...
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4 votes
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Can colorblind people see any types of images that normally sighted people have a hard time with?

Yep, in fact there is a 'Reverse Color Blind Test' that is difficult for normal sighted people to pass but is relatively easy for colorblind people to pass. Here's an example: BTW, the word is "...
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  • 156
3 votes

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

What you appear to be describing is called Akinetopsia. (Greek: a for "without", kine for "to move" and opsia for "seeing") a neuropsychological disorder in which a patient cannot perceive ...
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3 votes

What brightness level of mobile/desktop/laptop we should keep for better eye care?

You can't give accurate values to the exact level of brightness needed for optimal reading. There are several factors that affect such things such as type of display, ambient light, type of work, ...
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3 votes

Do computer glasses actually work?

No one likes CVS, and computer glasses are said to increase contrast and decrease glare to alleviate eye stress. If you are sure you will be using the computer in the future for prolonged periods and ...
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  • 647
3 votes
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Safe and state-of-the art method of laser vision/eyesight correction/surgery?

Brief description: LASEK and LASIK - cut a flap in the eye, use a laser to remove material underneath to reshape the lens and correct vision. LASIK has been around for a while, so there have been a ...
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2 votes

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

In general, resolution varies with distance, but when expressed as angular resolution this takes distance into account; the minimum distance between two points that can be resolved will increase in ...
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  • 2,331
2 votes

Is Low Blue Light helpful for preserving eyesight?

I don't have any information about whether the Benq monitor in particular will effectively reduce blue light. But to your question... "Is it helpful?" This article is fairly well referenced, and ...
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  • 121
2 votes

How to find out how advanced a hospital is for a specific speciality

You might try the Consumer Reports online tool that allows you to select and compare hospitals, evaluated for safety and infection rates. Another useful site is the Hospital Safety Score, a public ...
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  • 225
2 votes

Does eyesight significantly vary from day-to-day?

There are a lot of factors involved. I'm no authoritative expert, but here are my personal observations about visual acuity fluctuations and optical knowledge, since getting LASEK (PRK) 6 years ago. ...
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2 votes

What brightness level of mobile/desktop/laptop we should keep for better eye care?

I think it depends on the brightness of other light in the room. To reduce eye strain you should try to keep your screen at a similar light intensity compared to the rest of the light in the room. A ...
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  • 229
2 votes
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What things can trigger scintillating scotomas? Are they sometimes classified benign and not a reflection of a condition requiring further treatment?

Scintillating scotomas are essentially always caused by migraines (though I believe they have been reported from seizures as well). As such, the triggers for the scotomas are what triggers migraines. ...
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1 vote

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

Dysmetria is a possibility. (Specifically Ocular Dysmetria) It is a type of ataxia characterised: is a lack of coordination of movement typified by the undershoot or overshoot of intended position ...
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1 vote
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Which one is better? Reading on a computer, on a tablet, or on paper?

To first establish a baseline: Reading is great for your brain, your mind, your intellect. But it can be bad for everything else. You sit, you concentrate, you stress your eyes. It is such a common ...
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1 vote
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Increase vision clarity with eye exercices?

I've changed eyeglass prescriptions in the past, which is equivalent to what you're doing. Your eyes are no longer currently accustomed to having that kind of lens in front of them, so it feels the ...
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  • 158
1 vote

Do computer glasses actually work?

According to eye care providers, computer glasses designed for digital screens which can help alleviate many of the factors which cause eye strain symptoms, although do not completely prevent it. For ...
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  • 4,697

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