For the medical community: Is there any device to measure the actual thickness of the cornea?

Q. And if there isn't, then what formula does laser eye surgery use to determine amount of cornea to take off?

Please cite sources or your expertise.

A. There are several ways to measure corneal thickness: the process itself is called "pachymetry." The most common instrument is a pachymeter, which measures corneal thickness through brief contact with the eye, as seen here: http://vision.about.com/od/eyeexaminations/ss/eyexam_9.htm. It takes only seconds and is painless. Non-contact intruments exist as well (see last link below).

Lasik can be unsafe for people with thin corneas, not necessarily because of the amount "taken off" (it's actually "reshaped") but because the flap that is cut during Lasik surgry must be thick enough that the flap won't detach.

The formula used to determine whether a person is a candidate for one of these surgeries boils down to simple addition/subtraction of te patient's corneal thickness, the required size of the flap, and the amount of cornea to be removed to obtain the necessary level of correction (the worse your eyes are, the more cells will need to be removed to correct them).

Per the first link below, the size of the flap should be at least 160* microns and the amount of cornea remaining after surgery should be 250* microns. So, for example, if a patient's corneal thickness was 500 (which is thin -- normal corneas are about 500 microns), no more than 90 microns could be removed safely. To put it another way: if MORE than 90 microns would need to be removed to correct that patient's vision, s/he would likely be deemed ineligible for Lasik surgery. (There are other types of laser vision correction that don't require creating a flap; this person could be eligible for PRK, Lasek, or Lasik with IntraLase)

*Some doctors are more conservative than others about the thickness of the flap and the amount of cornea to remain intact after surgery.

Original Question

Is it possible for my vision to be restored, as over the years it has gotten a tad worse?

Q. blurriness, fuzzy, and such, my vision isn't all that bad, just enough to have to wear glasses, i want to know if there is a way to repair it naturally, without using laser eye surgery, or any mechanical devices.

A. There is some exercises for the eyes that are very good.
Check up this site: rebuildyourvision.com
Anyway, is very important a low stress level, good quality in food an to take lutein suplements.
Good luck!!

Original Question

is there anyway to improve your eye sight yourself?

Q. I have really bad vision, and i wear contacts, and glasses.
I was wondering if there was anything i could do to improve my vision?

and laser eye surgery is not an option.
haha, OK i can try that even tho i hate veggies. but i love fruit!

A. have you heard of kale???
the king of all vegetables, if you can eat a lot of that daily then your good,
but if you really can't take much of vegetables, then take Lutein 20mg,

here's the websites - http://www.cleareyesight.info
or if you want to spend money use eyerelax, eyepower from japan, eye exercise device from china or accommotrac - http://www.accommotrac.com/ - http://www.roffereyecare.com/
http://www.eyecollege.com/
http://www.central-fixation.com
http://web.singnet.com.sg/~hanwen/nvifaq.htm

http://www.preventmyopia.org/
http://www.myopia.org/

bilberry is very good too 20g of bilberry daily you will see result,
20g of bilberry daily you will see your health improve within a week or 2 weeks, because you have given a huge boost of antioxidant

http://health.nutralife.co.nz/Product.aspx?id=1076

Original Question

what happens during a laser eye surgery?

Q. im thinking about getting laser eye sugery so i wanna know what happens during it. Like how old you have to be and does it hurt how do they do it ect.

A. I had lasik about a month ago. No it does not hurt. It is kind of scary but they give you a valium before. You sit in a chair that reclines back. They hold your eye open with prongs and with a small suction device hold your eye in place. They tell you to stare at this red light and for about 20 seconds you hear the laser firing which sounds like an electrical arc. It goes dark for about a second. Then you sit up and you can see much better a little fuzzy at first. They give you sleeping pills and send you home to sleep for awhile. It was the best thing I ever did. I went from 20/100 to 20/20 in a matter of seconds. If you wear contacts and are used to having stuff right in front of your eye than it would be nothing. I was to skittish for contacts so I was a little scared but it all worked out. I am very happy. Do some research about eye surgeons in your area. I went with one of the top ten in the US and he was great and talked me through the whole procedure.

Original Question

Powered by Yahoo! Answers

Title Post: For the medical community: Is there any device to measure the actual thickness of the cornea?
Rating: 98% based on 3217 ratings. 4,8 user reviews.
Author: Unknown

Thanks For Coming To My Blog