Hi.. Thanks for the query... Are you planning for laser surgery to avoid using glasses? If so what is the power of glasses you are wearing? If you want to get your power corrected by laser surgery it depends on corneal thickness, curvatures and refractive error.. It is not going to improve your eye sight ( after you will have the same vision without glasses as your having with glasses before surgery...) nor is improving your condition of nystagmus.... But if you want to get your nystagmus corrected there are surgeries for that, but let me tell you the success rate is less.. You can consult a squint specialist for further details and treatment.. Hope the information helps you..Take care..