P.G.
Because of the several possible predisposing conditions of both illness and environmental exposures which have resulted in this occurrence with more than one family member in a seemingly similar way, you need to get this checked. However, be certain you go to an eye care PHYSICIAN specialist, and NOT a mall "doc" as are usually employed at eyecare and eye glass chain stores. That is, be sure you make an appointment with an OPHTHALMOLOGIST and NOT an OPTOMETRIST or an OPTICIAN. For simplicity when making an appointment look for M.D. after the name and not D.O. They are both referred to orally as "doctor". While some optometrists are very good and have seen a variety of eye ailments and can dispense certain medications, only an ophthalmologist can provide a complete and extensive exam and deal with all plausible aspects of your illness. It goes without saying that this is nothing for an optician to handle.