Is there any precautions for laser eye correction ?

Make sure you don't : have a severe dry eye condition or any other corneal diseases. Also see whether or not you like mono vision correction or not. At your age it will probably not be an issue. Ask how this laser surgery will affect the A scan when you'll need cataracts at 70 or so. Know that you may still need glasses for reading down the road. How satisfied are you with 20/30 vision?Ask about halos at night driving?

Laser eye correction: Avoid if have severe dry eye condition or other corneal diseases (Kerataconus), Glaucoma, have lens changes. Discuss with MD: risk of still needing glasses, regression, touch ups; & if mono vision when older; know laser surgery can make cataract surgery later in age more challenging: in getting the right implant power. Biggest risk of LASIK is chronic dry eye in most patients.