my husband's right eye had a SB surgery because of a retinal detachment causing by the atrophic holes one year ago. and his left eye also had been treated by laser for two round holes. now he was dignosed the PVD, but not feel any symptom. So I wonder how often his eye examination should be. A doctor told him once examination every three months, but I don't know if this interval is too long. thanks for your help! I will very appreciate your answer.