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Only partially and only in the early stages. The earliest symptom of cataract development is Presbyopia (the gradual loss of near vision) which can usually be dealt with by reading glasses or progressive/bifocal glasses. There is often a later "myopic shift" that will...

Many people think that 20/20 means "perfect vision." But "20/20" really just means "normal distance vision." The number ratio we are all familiar with such as "20/20" or "20/40" or even "20/400" are measures of distance visual acuity, or sharpness. They do not give...

Not really. If you are myopic (nearsighted) and wear contact lenses, there is virtually no difference in the blurred near vision from presbyopia compared to somebody without myopia. If you are myopic, however, taking off your glasses can provide better near vision than...

Keratoconus (and the spectrum of keratoconus-like problems of the cornea) are easily missed within the context of a normal, routine eye exam. Without specialized diagnostic equipment, keratoconus is usually only discoverable in its advanced stages using biomicroscopy...

No, in general you can wear your glasses in those situations where you really need to see better than you do without them. Not wearing glasses will not cause any damage to your eyes nor will this worsen (or improve) your uncorrected vision. While there may be other...

You can consider having vision surgery if you are dependent on glasses or contact lenses no matter how low or high your prescription. In general, laser vision correction works best for nearsighted (myopic) people under about -8 diopters. There are better options for...

It depends on what you mean by "astigmatism" and how bad it is. "Astigmatism" means the eye is not regular and equal in its focusing ability for every ray of light entering through the pupil. There is "regular" and what used to be called "irregular" astigmatism (now...

A mirror is not a necessary part of measuring visual acuity. Over 100 years ago, as the science of Optometry and Ophthalmology was developing, distance visual acuity was defined as a measurement at 20 feet and beyond. [Near vision actually requires a different process,...