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Why may YAG laser treatment be needed after cataract surgery?

Cataract surgery is the removal and replacement of the aged, cloudy natural lens of the eye with a new, artificial lens implant. If an intraocular lens implant (IOL) were not used, you would have to wear super thick glasses to get the eye to focus properly. When the...

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How do you know if an eye floater is serious? Can you go blind with PVD?

"Floaters" in one's field of vision are the out-of-focus silhouettes of the vitreous gel's dissolution into its liquid and solid components. A posterior vitreous detachment (PVD) is the release of the back vitreous gel from the retina. [This should not be confused with a...

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Do you have first-person experience with monovision IOL implants?

Monovision is a strategy eye doctors use to deal with presbyopia in patients. Oversimplified, it is where one eye is "set" to see better up close while the other is "set" to distance. Since the brain does not really "see" two images, but rather a "fusion" of the best...

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Is it true that 10 ml of pure methanol can cause blindness?

Methanol is definitely something to avoid ingesting -in any quantity. Methanol (wood alcohol) is a simple alcohol very closely related to ethanol, the intoxicating chemical in whiskey, beer, and wine. But methanol is extremely poisonous and toxic specifically to the...

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How does LASIK (laser eye surgery) work?

LASIK is primarily for distance vision problems. In nearsightedness (myopia), the eyeball is "too big" compared to the normal size. The cornea (the focusing element even more important than the lens of the eye) does not "know" this so it is focusing a more typical...

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What can a retina specialist see that an ophthalmologist can’t?

It is not so much a matter of what the retina specialist can see as it is what (s)he can do. While there is specialized testing (e.g. angiography) that general Ophthalmologists and Optometrists do not typically have in their offices, the types of retina/vitreous surgery...

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What causes night blindness while driving for some older people, and is there any way to treat it?

The most common symptom by far of developing cataracts is veiling glare and a drop in contrast sensitivity. This is what most people mean by night blindness. _Written by J. Trevor Woodhams, M.D. -...

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I've high myopia (-6.25, -6.75) with low corneal thickness (492,500). Is SMILE or PRK an option for me? I don't want to get ICL because it has a lot of risks.

All surgery has inherent risks that any patient should understand before he or she decides to proceed. This is especially true in the case of relatively elective procedures like vision surgery. Unfortunately, while I have this conversation (using pictures) every day with...

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