Charles Thank you for your helpful suggestion. I have passed your message on to my father and he is going to mention it to the eye specialist when he sees him in a couple of week's time. He has changed eye specialist as the last one had no solution and seemed to think he would just have to put up with it so he found your message encouraging. Thanks again and best wishes Rosemary > > Hi Rosemary. I'm new to the list. I've been lurking and waiting for the > oppotunity to make a meaningful contribution. Like your father I suffered > from double vision. Mine was due to a surgically repaired detached > retina, and caused me great discomfort. Happily I was referred to the > University Hospital pediatric ophthalmology department in which a > specialist in prisms evaluated me and prescribed new eyeglasses in which > prisms were ground into the lenses. I still have some visual problems, > but I no longer have double vision. Have your dad check it out. It's > definitely worth trying. Good luck. >