I read through Sam's entire narration- fascinating as usual- and some of the others as well. Thought I shaould post my own experience here since it may help some considering LASIK.
I have worn glasses since I was 14. In fact I knew long before then that my vision was far from perfect. My right eye had perfect vision to start with and my left eye was myopic and I had a mild case of amblyopia ("lazy eye") which meant that my right eye was compensating and doing the bulk of the work. When I was in Class IX I finally had to admit to myself that I couldn't read the board properly from the third bench. So Mom took me to an eye doctor who tested me using the eye chart and pronounced the inevitable: I had -0.5 in my right (good) eye and an incredible -4.5 in the other. Even the doctor did a double take but I knew he wasn't mistaken. The good doctor then proceeded to take my poor Mom to task right in front of me. He said something like: the kids don't know better but surely you educated parents should? I remember feeling very bad for my Mom right then. My parents worked hard, saved diligently and didn't spend on anything unless absolutely necessary. Annual eye tests for the kids were a luxury we could ill afford.
(My sister came along with us that day and gleefully read every line on the eye chart. She had perfect vision, 6X6 possibly 6X5. This state of affairs continued till maybe about a month ago when she announced that she has finally got her first pair of prescription specs. My first question was: myopia or presbyopia? (she's almost 40) When she replied myopia, I laughed loudly on the phone for about a minute, then apologised).
Day One of wearing glasses felt like somebody had drawn outlines aroud everything in the world overnight. It felt wonderful to behold the world as God had intended it to be seen but in my awkward adolescence all I could think about was that everybody was laughing at me (they weren't; in fact even now people tell me I look much better with my glasses on). But soon one got used to the cat calls of "battery" and "dhaapnia" (Bombay slang can be cruel) and the chunky plastic frames soon became a part of my personality.
In college I graduated to carbon fibre frames: much lighter and more attractive. I flirted with GP (semi soft) lenses for a brief period but about 3 months into wearing them, one got dislodged in a local train and the agony was too much for me (I hate things in my eye even now). My Mom was worried that this may recur during my XII board exams and that was enough of an excuse for me (secretly I was relieved because the oldies had spent 2200/- on the contacts and I was worried they'd insist I keep wearing them).
My power kept increasing through college. By the turn of the millennium when I was around 25, my power read:
R: -4.5 sph, -2.25 cyl
L: -7.0 sph, -5.5 cyl
That's pretty scary stuff. Let me put it this way: the first five minutes of the morning when I woke up till I found my glasses and put them on were a blur to me. Literally.
I've always read a lot and since I was in a tech company by then my computer usage had also gone up drastically. At this point, someone in my family suggested LASIK. I'd heard about this procedure supposedly invented by some Russian doctors who went around the world in a ship curing the bad eyes of thousands across the world but the romantic story was almost always jarred by the caveat: its long term effects are unknown. For a long while I believed that this meant I would necesarily grow blind by the time I turned 60 and my only experience of my grandchildren would be shadowy ghosts and muted cries (I have a big fear of going deaf as well, thanks to Mom who lost her hearing in one ear very young). Then one day out of the blue my best friend, a surgeon himself, got himself LASIKed.
He was a "battery" for a lot longer than I'd been- from around age 8 I think- and one day got fed up and went and did it. His power was a lot lower than mine- around 3 in each eye if I recall correctly. Residual power was nil. To this day he doesn't wear glasses.
When we met up, I asked him the thing that had been haunting me for years: would I go blind in my od age? He replied, without skipping a beat, nobody knows what the effects of LASIK will be in 20 years. But you can bet that in 20 years, IF there are some bad effects, they'd have invented a way to get rid of those as well.
That was a pretty strong recommendation for me and I immediately set up an appointment with Dr. Kumar Doctor in Andheri (his clinic is near the station but he operates a little further down, near the first Shopper's Stop). Dr. Kumar as he is known (his father also practices with him and first names are easier to distinguish) was very brisk and professional and also very honest. he did a few tests and then told me that my corneal thickness was probably not enough to guarantee a full cure. He asked me if I was OK with that. I looked him straight in the eye and said, "I hate the feeling of helplessness I experience when I wake up in the morning. If that goes away, I have no problem wearing glasses for the rest of my life." He smiled in satisfaction and pronounced that I was doing the procedure for exactly the right reason and that any residual number would ensure that I would be able to function MUCH better than I was right then.
I remember the actual procedure quite vividly: it happened really fast (must have been over in 20 minutes tops) and all I had to do was look towards the ceiling and focus on a red dot. My good eye was first and I felt something akin to a pin prick and then the red dot got progressively clearer. My bad eye followed and it seemed to take a much longer time this time and the red dot kind of went off-centre and out of focus towards the end. That was my first sign that something hadn't quite gone right- or maybe it's something my imagination cooked up later. Anyway I rested in a hospital bed for a brief time then the doctor came in, announced that it was a success, gave me my villian goggle and "anda" eye-covers and told me to go home.
Dad had given up driving by then (bad eyesight due to diabetes) and we took an autorickshaw home. I could see everything since I just had the goggles on and was amazed at how clear everything seemed. It was like the first day I had worn glasses 12 years ago only clearer. After we got home, swapped the goggles for the andas and didn't do much for the bext 3-4 days. It was sheer agony: I wanted to rub my eyes and get all the crud out but the good doctor had said not to touch them or risk getting my old number back (I think it's something he tells his child patients and forgot that I was 25!

)
A couple of days later my eyesight settled into what it had never been (and hasn't been ever since): perfectly normal. I would wake up in the morning and stare lovingly at the clock face that had for years been a blob of grey and yellow and had somehow morphed into this beautiful vision: a pair of black and red hands on a white dial surrounded by a yellow ring. Sometimes I'd push my glasses up my nose only to remember with a laugh that they weren't there!
I went without glasses for about 3 months. Soon I began to realise that what the doctor had told e had come true: I still retained some residual power in my left eye. A check in his clinic confirmed this: I had -1.5 sph in my erstwhile bad eye, while the good one was near perfect. miraculousy the cylindrical power (that causes astigmatism, rsulting in blurry vision) was gone in both eyes. By then I'd resumed driving and was facing some problems reading signs on the left of the road, so I insisted upon corrective glasses (Doc was disappointed but I assured him that I was happy). His assistant tried to interest me in "touching up" the remaining power but I couldn't bear the thought of voluntarily putting myself through all that suffering just for vanity's sake, so I let it go.
Thus I became a "dhaapnia" again. In the 10+ years that have passed since then my power has increased but not by the leaps and bounds that it had in my younger years. In fact it remained steady for a long time, only recently increasing again. Today I am at -2.0 and -1.25 sph with marginal cylindrical corrections in each eye. I can do most things without my glasses except driving and watching TV. If my kid gets a tad too boisterous all I do is take my glasses off and continue having fun. I can swim and actually recognise the people around me. All thanks to LASIK.
And the negative effects? I'd been warned repeatedly about auras and shadows but have never experienced these myself. Periodic dryness of the eyes is a problem but nothing that a few drops of Refresh Aquagel Tears don't solve. It is worst in cold dry climates like Pune in winter. The two years we spent in warm, humid Singapore I never had a problem. I have no problems with night vision or colour sensitivity either.
Overall? I thank the day my doctor-friend decided to get his eyes LASIKed himself because that's what gave me the courage to proceed (am pretty risk averse otherwise). I think the moment I appreciated my new-found (almost) perfect vision was a couple of summers ago when my wife and I went scuba diving in Bali. 15 metres under the surface, holding hands, with only fish and the sounds of the sea for company, I thanked the doctors and the technology that had made this magic possible. I have absolutely no hesitation in recommending this to anyone else as well. You are in the best person to judge whether it will be good for you. All the best!