Vuity® is the brand name for a medical eye drop recently FDA approved to reduce the blurry near vision caused by presbyopia in middle-aged adults. The active ingredient in Vuity® is a very old ocular medicine once used to treat glaucoma: pilocarpine. But the concentration (1.25%) is much...
One's vision and one's glasses prescription have only a loose correlation. Of course, the higher the Rx number means in general the worse the distance vision. But there isn't any sort of "-3.00 Diopters = 20/400" and "-4.00 D. = 20/800" visual acuity relationship. Once...
Vitreous "floaters" are the annoying, slightly out-of-focus remnants of the once transparent gel that filled the eye as a child. Since the vitreous has no purpose in the adult eye, it degenerates over time, leaving the floaters suspended loosely in the eye. They typically settle with...
The eye is a complex organ that manipulates light much like a camera does; it has lenses to change the focus and a sensor to recognize intensity and color. How Does the Eye Focus? Starting with the Cornea The first layer of the eye that light hits is...
With all respect, the premise of your question is incorrect. Far more people wear glasses than contact lenses, but that does not mean contacts are not a "safe and good thing." Many millions of people have refractive surgery on their eyes every year. Most of...
