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If monofocal cataract surgery has been performed on the first (dominant) eye with a +12.0 dioptres IOL implanted, what should be the dioptres for the other eye, for an overall optimum refractive outcome?

Your question does not, unfortunately, supply enough information for a meaningful response. It is certainly understandable to want to think of the eye as a "camera" that uses a lens of a particular power (prescription) as in glasses or contact lenses, to achieve an...

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What does my eye prescription say about my vision? The doctor was not very helpful. OD -7.50, OS -700. OD CYL +2.75, OS CYL +2.00. OD & OS AXIS 090.

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...

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How do we control our eyes to not focus on distractions?

It may be difficult to imagine, but what we see "out there" is not a passive input of data onto some sort of neural screen in our brain. Rather, what we see is our "projection" onto the world out there of a model we have learned for interpreting that visual...

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Prior to cataract surgery, my near-sighted vision was near perfect; I could read without glasses. The surgeon implanted lenses with the same power as my natural lens. But one eye is slightly off by -.50 to -.75. Should I have the lens replaced?

Probably not. There are really two issues here: 1) Why is it, to your surprise, you now need reading glasses and you didn't before your cataract surgery? 2) How easy and safe is it to remove and replace an intraocular lens (IOL)? Nearsighted (myopic) people enjoy...

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If I have been told I have beginning cataracts, what signs should I look for to know if it is getting worse?

Cataract development is almost always quite slow and gradual. Typically one eye will get worse sooner than the fellow eye. Most people do not notice any sort of sudden change in their vision (although that is not impossible). The very earliest symptom of cataract...

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What is the highest diopter that would disqualify a person from getting LASIK/ PRK?

There really isn't a "hard line" beyond which laser vision correction should not be done -this depends on many factors that can only be evaluated in the course of a thorough ocular examination and biometric testing. This is true with any kind of laser procedure of the...

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What are the pros and cons of getting Lasik versus PRK?

LASIK and PRK are both laser vision correction treatments that reshape the cornea. They have been shown in many studies to be equally effective in treating nearsightedness (myopia) and astigmatism. They even use the exact same laser with the same settings for...

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Does conjunctiva cover the iris?

No. the conjunctiva is the thin, moveable, and semi-transparent layer that covers the white part of the eye (the sclera). It does not extend past the edge of the cornea (the limbus). The iris sits a little behind the cornea. The conjunctiva only extends the other way back...

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