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Doctor insights on: What Are The Best Eyeglass Lenses That Change To Dark Shade

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What are the best eyeglass lenses that change to dark shade ?

What are the best eyeglass lenses that change to dark shade ?

Transitions: My personal favorite is transitions xtraactive which is one of the few photochromic lenses to actually darken in the car. Most lenses that darken automatically are activated by ultraviolet light and need to be directly expsed to uv light in order to activate/darken. The transition xtraactive lenses have a slight tint indoors but will darken in the car as well as outdoors. ...Read more

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Dr. Tim Conrad
504 doctors shared insights

Eyeglasses (Definition)

Babies sometimes need eyeglasses to correct vision or to correct ...Read more


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What is the best way to reduce your eyeglasses prescription?

Get laser surgery: This will reduce or eliminate your need for glasses. ...Read more

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What is the best way to clean eyeglasses?

What is the best way to clean eyeglasses?

Water: Although, you may get bombarded with a number of eyeglass cleaners, in my experience and opinion, there is no better one than water. I use liquid hand soap and tap water to clean my glasses daily and then tap them dry with a flanel cloth. Works like a champ! ...Read more

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I just bought contact lenses and i noticed a dramatic change in my vision from my eyeglasses. I see way clearer. I feel and see shapes and size, why ?

I just bought contact lenses and i noticed a dramatic change in my vision from my eyeglasses. I see way clearer. I feel and see shapes and size, why ?

You probably: have a major component of astigmatism which is more "completely" corrected by contacts up against your lens! Many people find contacts far superior to eyeglasses especially with very nearsighted folks and/or folks with astigmatism! Hope this helps! DR Z ...Read more

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What damage to our eyes with a defective eyeglass lens?

What damage to our eyes with a defective eyeglass lens?

Glasses prescription: An incorrect prescription may give you a headache or cause blurry vision, but shouldn't damage your eyes. ...Read more

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Is polycarbonate eyeglass lens expensive?

Is polycarbonate eyeglass lens expensive?

A little more: Polycarbonate lenses have a higher index of refraction and can be made a little thinner which lightens the eyeglasses and makes them more comfortable. So they charge a little more for them. I consider eyeglass costs way too high for the technology and manufacturing costs, but it is an industry charging what the public will put up with. ...Read more

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How does an eyeglass lens differ from a magnifying glass lens?

How does an eyeglass lens differ from a magnifying glass lens?

Very different: Eyeglass lenses can either magnify, minify (make images smaller) or correct astigmatism. Magnifying glasses are used in readers and prescription lenses for farsighted and presbyopic people, while minifying lenses are used for those with nearsightedness. Also, there can be magnification or minification with astigmatism correction at the same time. Glasses are built specifically for your vision. ...Read more

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What are some alternative names for polycarbonate eyeglass lenses?

What are some alternative names for polycarbonate eyeglass lenses?

Safety glasses.: Polycarbonate (a type of plastic) in cetain thicknesses and specifications, is the type of material used in most industrially used safety glasses. It is reputed to be able to stop a speeding bullet (depends on the speed and type, of course)! most high-index eyeglass lenses these days are made of alternate material with better optic quality than polycarb. ...Read more

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Can you tell me how I could tell if my eyeglass lenses are really polycarbinate and not plastic?

Can you tell me how I could tell if my eyeglass lenses are really polycarbinate and not plastic?

Snap and crack: For the same size lens Plastic is heavier. Polycarbonate will be uv400. For those 2 you probably can't tell. Plastic snaps or shatters went bent past tolerance, polycarbonate just bends and then past tolerance will not resume its original shape. Plastic is typically cheaper but has better optical quality ...Read more

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Can aspheric eyeglass lenses help nearsighted people?

Can aspheric eyeglass lenses help nearsighted people?

Aspheric glasses: Aspheric glasses may minimize induction of aberrations in nearsighted people but usually not to a clinically significant degree. That being said you are better off spending your money on high index glass to minimize the thickness and weight of your glasses. Contact lenses are also a very good option. ...Read more

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I discarded 2 pairs of high cost progressive eyeglass lenses due to inaccurate astigmatism results by 2 optometrists. The 3rd one got it right. Why?

I discarded 2 pairs of high cost progressive eyeglass lenses due to inaccurate astigmatism results by 2 optometrists. The 3rd one got it right. Why?

3rd Times a charm: Is the question, why did the 3rd one get it right? That could be that the 3rd one got it right because he did a better job-Or that he saw the other 2's mistakes & did not repeat those mistakes. If you are asking why the other 2 optoms gave you glasses that your eyes were not comfortable with then it could be a few reasons. If you are asking why you discarded 2 pairs of glasses, that is a good "?" ...Read more

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What would you suggest I do to convert my contact lens prescription into eyeglass prescription?

What would you suggest I do to convert my contact lens prescription into eyeglass prescription?

Your doc is needed: Depending how near are farsighted you are, there are special formulas to determine this. Your eye doctor should be able to give you a prescription for both. ...Read more

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I have a crack a polycarbonate eyeglass lens starting at the edge. What would happen if hit by ball?

I have a crack a polycarbonate eyeglass lens starting at the edge. What would happen if hit by ball?

Hit by ball?: If you're wearing these eyeglasses when the ball hits you, you could get a real headache. Take care out there! ...Read more

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What eyeglass shape is best for someone with a small round face?

What eyeglass shape is best for someone with a small round face?

The ones you like: Most people know instinctively what they like and what makes them look good. You have o wear them so you should pick out what you like. ...Read more