My daughter developed a noticeable squint at aged three. Now she is aged five and her prescription is +3 in her left eye and +2 in her right eye. She has been wearing glasses since she was three. Today at her orthoptists appointment, I was told that her left eye is turning in when focusing close up by 20 diopters with her glasses on . And when looking at distances, by about 6–8 diopters. I don’t really understand what this means or how severe it is. The orthoptist has recommended patching her right eye to strengthen her vision in her left eye for the next month. Then she’ll have the drops to check her prescription is correct. She mentioned there may be a need for surgery in time. My question is is it likely that her squint will become permanent with her glasses on. At the moment it’s only noticeable when focusing close up or when tired. I feel really concerned after her appointment today and I’m not sure what the future is likely to hold for her vision and squint . Any explanations, experience or advice would be very helpful and gratefully received. Thanks very much.