Saturday, January 12, 2013

What's the worst my vision can get before I cannot get laser eye surgery?

Q. I'm thinking about laser eye surgery as I get older (I'm 17 now.)

My vision is -6.5 and -7.25, so I seriously have bad eyesight. This is from pretty much living on the computer and doing nothing else.

I don't want to lug thick glasses around my whole life since I think they detract from my overall appearance (if I do say so myself, I look pretty good without glasses!).

A. Surgery has been performed on may people with worse vision than what you have. But, the Rx is only one of many considerations that they take into account before they approve you for surgery. Corneal thickness, tear production, how glare affects you at night, all sorts of things other than that as well, so it is not just an RX thing. Your vision is mostly caused by your heredity and grfowth, not your computer use. You might want to consider contacts since you would most likely not be eligible for surgery until well into your 20's. They usually prefer you to have stable vision for a couple years before they reccomend surgery and until you are at least 22 you can still grow a bit and your eyes can change a lot. Surgery does not stop your eyes natural times to change, they still will do that. Keep your doctor in mind and ask them about this and see what they say!


astigmatism, nystagmus and +6.5 lenses, what can i do to improve my vision?
Q. I have been told i have 3 problems with my eyes which rule out laser eye surgery, my astigmatism, i have a nystagmus and my prescription is high at +6.5. On eye tests i am told i should be able to drive but in reality i can not read a number plate at the required distance.

Is there anything i can do/have done to improve my vision so i can drive?

A. Keep wearing your corrective lenses (glasses or contacts) and ask your ophthalmologist or DMV about the possibility of getting a restricted license. (sometimes it requires getting an exam signed by an ophthalmologist or having an ophthalmologist sign a particular form) I think it varies based on the state you live in but some states allow for driving during the day time and in places around town. Good luck!


What kind of surgery can I get for my eyes?
Q. I wear a -6.5 in contacts - that's really bad. So I'm going to get corrective surgery at some point in the next couple of years. But I want to know - can I get lasik laser vision correction or do I have to get contact lens implants? If I have to get the implants, can you tell me something about them? I don't have astigmatism but I do have a couple of scars on my eyes.

A. The implants are a fairly new way to correct refractive errors. The procedure itself is very, very simple and in the hands of an experienced surgeon, it only takes a few minutes to do. The implant is placed just in front of the regular lens, just behind the iris. When one of these lenses is in the eye, most professionals would not notice they were there unless they looked very carefully. They are almost invisible even under the usual slitlamp exam.

The complications of that procedure included cataracts. This is when the normal lens itself becomes slightly damaged and the lens cells/fibers become less than transparent, or foggy. The treatment is to remove the implanted lens and do the cataract surgery and then replace both of the lenses that have just been removed with a new implant.

This is permanent. There will be no further refractive changes once that cataract surgery has been done. But as long as the regular lens is inside the eye, it grows. We can actually look at a lens and tell if there was some sort of physiological insult at a determined period of that person's life, including pre birth. People that have congenital rubella, for instance, will have cellular remains within the lens nucleus. Congenital Syphilis also causes signs similar to that of rubella.

The laser surgery will reshape the cornea, the front clear surface. You'll see better almost immediately and this will stabilize within a week or two. That will be an amazing experience..... for awhile. But seeing up close will become a bit harder as you'll have to 'work' to accommodate. And as the lens grow, you'll become slightly more and more myopic again, but probably no where near what you are now. By the time you are 50 or so, you'll need readers just like the rest of us.

Determining the type of surgery depends on the eye and the surgeon, and you somewhat. If you go to a purely laser refractive clinic they'll want to do laser. If you go to a 'regular' ophthalmologist, you may have the options of the lens implant OR the laser.

If it were me, I'd go for the implant. The reason is that messing with the cornea, a 1mm thick membrane that is in contact with the environment, allergens, dust, dirt, dander,... stuff... requires a competent organ. The cornea is quite good at it's job and once it's injured, it'll be a problem the rest of your life. So think long and hard before you make that decision. Most will say..Na, not really a problem. But I see those problems every day. EVERY DAY!


Is -4.5 a huge eye number? How can I reduce it?
Q. I have a -4.5 number. I am 18.

Is it a huge number?? How can I reduce it by a non-painful method?

Also, how can I relax my eyes?

A. Anything above -6.5 is very nearsighted, so you are moderate. I have a -14.25 and a -16.50 and I am 21...

You can't reduce it, carrots are healthy but they don't improve eye sight! Being near sighted is not a big deal. It is 2008 we have contacts/glasses and even laser surgery to help make vision problems nonexistent. Your vision will stabilize soon. (between now-early 20s) You can relax your eyes by wearing glasses at night or while at home instead of contacts. Never sleep in contacts, and take frequent breaks from the tv and computer





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