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Lasik Doctors


Second Sight
Age Related Myopia With Cataracts and
Lasik, Bladeless Lasik, PRK, etc.

At or around the age of 60, many people experience what is commonly called "Second Sight". The near vision that had been lost around age 40+ seems to get better. The cause of second sight is an important consideration with refractive surgery like conventional or wavefront Lasik, Bladeless Lasik, PRK, LASEK, Epi-Lasik, and P-IOL.

Before about the age of 40, the human eye is able to change shape to change focus from distant items to near items. This is called accommodation. Presbyopia is a normal result of the aging process. After around age 40 the natural crystalline lens of the eye is not as able to change to focus on objects near. Most people with presbyopia use reading glasses, bifocals, or trifocals to provide clear vision at all distances.

Cataracts too are a normal result of the aging process. Cataracts are when the crystalline lens become cloudy and vision becomes less clear. This is also called nuclear sclerosis.

An early sign of cataract formation is what appears to be improvement in near vision. As the crystalline lens ages, it becomes more dense and changes refractive index and effective power. An increase in power in the crystalline lens means more myopia (nearsighted, shortsighted) or less hyperopia (farsighted, longsighted).

There are two ways to describe myopia. One is that you cannot see distant objects very well. Another is that you can see near objects well. Accommodation has not returned, but the increase in myopia induced by nuclear sclerosis can improve near focus. Unfortunately, the lens is also becoming more cloudy and opaque.

The actual cause of presbyopia has not improved, and the ongoing process of opacification of the lens commonly requires surgery to remove the cloudy lens and replace it with an artificial intraocular lens.

A consideration regarding refractive surgery for a person experiencing Second Sight is that the overall refractive error is changing and surgery on the cornea, such as Lasik, Bladeless Lasik, PRK, LASEK, Epi-Lasik, etc. is not going to stop or slow the progression of a cataract. Cornea based surgery or implantation of a P-IOL for a patient who will soon need cataract surgery may be ill advised. If the patient is near the time when the cataract will need to be removed, then RLE, which is essentially cataract surgery for refractive purposes, may be more appropriate and should be evaluated.

For more information, read Cataract Details.

If you are ready to choose a doctor to be evaluated for conventional or custom wavefront Lasik, Bladeless Lasik, PRK, LASEK, Epi-Lasik, RLE, or any refractive surgery procedure, we highly recommend you consider a doctor who has been evaluated and certified by the USAEyes nonprofit organization. n. Locate a USAEyes Evaluated & Certified Lasik Laser Eye Surgery Doctor.

    Consider and Choose With Confidence

Last updated Saturday, August 18, 2012

"Consider and Choose With Confidence" TM

A few of the communities where Lasik doctors are certified by USAEyes :

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