Other possible problems include delayed surface healing, corneal haze and or scarring, over or undercorrection, and the development of astigmatism. Some individuals can have a poor or excessive healing response. Again most complications remain treatable with medications or further surgery. It is also important to separate the normally expected side effects of surgery and healing from real complications. Immediately after surgery some people have discomfort, although the use of bandage contact lenses and medications usually control this nicely.
Light sensitivity is almost universal and halos and other unusual light effects can occur.
Vision can be reduced while healing and from the normally planned overcorrection. You should discuss and fully understand all of these possible side effects and problems prior to surgery.