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If someone has a glasses prescription of -15, can it be corrected?

This would be considered a seriously high degree of myopia (nearsightedness), well beyond the limits of what LASIK can safely correct. However, there is another technology: the ICL (Intraocular contact lens) that would probably work and would certainly be safer than...

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What is the best approach to achieve perfect eye care health in 2021?

There is probably nothing to be done if your aim is to achieve "perfect eye care health," in 2021 or in any other year. Age and environment are always going to compromise one's vision through their cumulative and progressive effects over time. Taking care to use proper...

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What is the highest number of shortsightedness in diopters (sphere) and the highest diopter of astigmatism (cylinder)?

There is a better way to think about the issue of "how bad can astigmatism and/or myopia (shortsightedness) be?" The median (half being worse and half being better) degree of myopia in North America is about -3 Diopters. [This is based on contact lens sales.] High myopia...

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Is LASIK or laser for vision correction safe?

The rate of success in LASIK is unprecedented as a surgical procedure. In the right hands, with a properly selected patient, and using the best equipment…LASIK is extremely safe and highly effective as has been shown in hundreds of peer-reviewed studies across the...

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Are cones and rods in the eye actually hair?

No. But there are indeed many connections between the eye and our hair & fingernails. The cornea of the eye is made of something almost identical to the keratin that is the basic "stuff" of hair and fingernails. In fact, the "k" in LASIK stands...

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Is laser-assisted cataract surgery worth the extra money?

As a cataract and lens implant surgeon with over 30 years' experience, I would say "no." We had a femtosecond laser for doing FLACS (femto laser assisted cataract surgery) and stopped using it or recommending it to patients. We found there were no (zero) benefits over...

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Is there a way to treat lazy eye if you are an adult?

The phrase "Lazy Eye" is used informally to refer to two different things medically: 1) eyes that look in different directions (strabismus), and 2) the inability to fully correct an eye to 20/20 (amblyopia) with a spectacle or contact lens despite no apparent anatomical...

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What is the difference between near and farsightedness ?

Nearsightedness (myopia) is a "refractive error" of the eye where the default focal point is abnormally close. Depending on how much myopia you have, distance vision can be anywhere from mildly to severely blurred. Farsightedness is where your vision is better at a...

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