Doctor insights on:
Why Are Eyes So Vulnerable To Damage
Ultraviolet Light: Uv light cause damages to cells. The melanin containing cells in the skin provide some protection for the body but the cornea of the eye is clear and allows the uv light to penetrate. This can cause damage to the lens of the eye resulting in cataracts. ...Read moreSee 1 more doctor answer
Can sunglasses be bad for my eyes? Is it better to have darker-colored lenses or higher uv protection (or both)? I heard that darker sunglasses cause the pupil to dilate more, which makes your eyes more vulnerable to uv rays. Is this true? Should i get li
Ultraviolet : Ultraviolet (uv) light is harmful to the eyes, especially large amounts over long periods of time. In the United States, all sunglasses are required to block a very large percentage of the uv rays. The darkness of the sunglasses does not affect the uv filtering ability, since uv light is invisible and the uv blockers are clear. It is true that darker the sunglasses will open the pupil more and thus let in more uv light, but since almost all of it is being filtered by the sunglasses, this is not something to worry about. The exception would be specific eye diseases such as retinitis pigmentosa, in which extra high uv protection is a good idea. ...Read moreSee 1 more doctor answer
Keep on schedule: Contacts are designed to last for certain intervals of time which will be told to you by the ophthalmologist who fit them for you. This relates to the time to accumulate substances which will affect clarity, change comfort or culture organisms. There is some flexibiity beyond manufacturer recommendations related to environment and your tear cleaning ability. Best to keep on schedule. ...Read moreSee 1 more doctor answer
Strain but no harm: Contrary to popular belief, reading in dim light does not do any long-term damage to the eye itself or weaken the eyesight. For the short-term, however, it can cause some eyestrain, which is just fatigue in the muscles of the eyes. If your eyes feel sore or your vision is less crisp than usual, it is time to close your eyes and rest them (and maybe dream about that great novel you're reading!). ...Read moreSee 1 more doctor answer
Not very: Led lights can be dazzling but are not laser. They do not provide a concentrated, focal light but a more diffuse light which the eye can easily handle. It is not comfortable to stare at an led light but not harmful. This of course is not the case with laser light which carries the usual cautions. ...Read more
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