If too old, like say, 40 or 50 plus, better not.
Cause now maybe got san guang, who knows ltr after lasik, then lao hua. Isn't it a waste of money?
Usually after lasik, have to buy eyes drops and bring eye drops with you wherever you go, cause will have dry eyes.
Besides, it is not a sure thing that degree won't come back.
For me, I do consider once cause my degree is 600 and 500 on left and right respectively. But I got scared after my bio teacher show us a youtube yideo about how lasik is done.