A consequence of this compensation is that the effects of presbyopia become apparent earlier than normal when the ciliary muscle struggles to keep up with the stiffening of the lens. As with presbyopia, the conventional glasses worn to give extra focusing power for close work prevent the eyes getting the exercise they need to get better. What to do about Long Sight Encouraging the eyes to focus closer on their own will help them adapt, the sight gradually changing towards normal. Read with Trayner Glasses for a few minutes a day, starting with perhaps five minutes a day and building up to half an hour or more. Initially this will just be strengthening the ciliary muscle to cope with the extra work, but soon the eyeball will start to adapt and get longer until it loses its long sight.
Some people have eyes that focus differently to each other.
If the eyes cannot work together the world will be perceived without any depth. If the imbalance is mild the only symptom may be a tendency to get headaches or eyestrain when reading. This is basically a sign that the brain is having difficulty merging the images from the two eyes together, one is sharp the other fuzzy. The brain tenses the muscles around the outside of the eyes as it tries to steady them to get better images. The muscles start to ache after a while.