Lasik Laser Vision Correction
What is the electric field strength of the laser light at the focus point?
A Lasik Vision Correction system uses a laser that emits 10ns long pulses of light, each with 2.5 J of energy. The laser is focused to a 0.90 mm -diameter circle.
Alright, that makes sense but the answer is supposed to be in N/C. So how would I do that?
Intensity I(peak) = energy/(area*time) = 9.82438E13 W/m^2
E = sqrt(I(peak)*Z0) = 192383516.88676 V/m
(where free-space impedance Z0 = sqrt(ยต0/e0) = 376.730313462204 ohms)
Laser Vision Correction Experience Worth Recommending
April 21st, 2010 at 4:27 am
It depends on the company you work for and what kind of Vision Care you have. I have seen some medical plans that do cover some of it. I have seen some Vision care plans that Negotiate Discounts with certain providers. Go to yoru Human Rescources and find out what your plans are that are available to you through your work. O^O
May 8th, 2010 at 11:18 pm
Check out http://www.Ultralase.com
May 26th, 2010 at 11:48 am
Most floaters are cellular debris floating in the vitreous gel and casting a shadow against the retina which we perceive enlarged out in space. There is no practical way of removing them without creating more damage than doing nothing. Normally floaters do no harm, and In time some of the floaters will simply move out of view.
May 29th, 2010 at 12:57 am
J’s answer is fascinating and the bit she said about blinding has convinced me not to get it.