It’s been almost a week now since my Lasik surgery, and my eyes are a little blurry after a bike ride from home to work, but they’re clearing up as I type this. Last night was the last scheduled treatment of Predforte (anti-inflammatory) and Zymar (antibiotics) for my eyes. Now, all I have to do is keep my eyes moist and not rub them for the next six weeks. Overall, I’ve been very happy with the surgery so far. What’s real tough is playing Geometry Wars Evolved on the Xbox 360 at night. My eyes are tired after a day of work and it’s hard to track all the moving objects on the screen, but at that time of day, I should probably be taking a break anyways. I’m in front of a computer screen most of the day, so every day since the surger around 3 PM, I have to take a 15-minute break to let my eyes rest. That was probably something I should have been doing even before the surgery. This morning when I woke up, my eyes didn’t feel dry, so that was a really good sign that the dry eye syndrome will finally go away.
Last night, I still saw halos around lights, but I expect that to decrease over the next few weeks or months. The reason for the halos is the spherical aberration caused by the difference between the treated and untreated part of the cornea. As your pupil dilates, it allows more light in through a wider area of the cornea. This increases the chance that light will be scattered on your retina – especially if the light has to go through the treated and untreated areas of your cornea or lens. Even now, I can still see and drive okay at night, the halos are just an added “feature” of Lasik at the moment.
This is a good diagram showing the reason for Lasik-induced spherical aberration.