I wanted to do lasik surgery but my brother is also interested. What is the age limit for surgery?

nope my sister got her lasik done in 2012 she's still not wearing any spectacles that time only few hospitals used to do lasik , we got it done at Sankara Nethralaya Chennai.
I have encountered 2-3 people ranging from 40s to 55 age and even though they have been cleared of any eye power they have been advised to use a zero powered specs/lenses hence my statement.
 
I had PRK done a couple of years ago and my sister had LASIK even before me. For us, it was painless. She has developed a small number in one of her eyes. I, on the other hand can see that the image is still not clear as it used to with glasses. I can see that one eye is better than other at some distances. I had perfect near vision which is not the case after PRK. I can read subtitles from TV but I find white color seems to spread. It is not as sharp.

One intersting thing is, One day after PRK, I had to go for eye test and it was better than 6/6 for both my eyes and I was extremely happy with it. But as healing progressed, it was not the case. My left is bad at near vision(wasn't before PRK)
One thing that people dont't talk about is eye fatigue. My eyes get easily tired now. Earler, I never faced this.
If I could undo it. I would.

My advice, If your work involves screen time, then avoid it and use spectacles like a good nerd. Resultes can be different for everybody though.

Feel free to ask anything about it. There are other techniques like SMILE available too but haven't researched on them.
 
Just get a good pair of glass lenses from a good brand (smudge+scratch+fog proof + UV filtering) with a comfortable frame, and contacts for looking into someone's eyes.