Formation of focal image on macula (central spot of the retina)
leads to difficulty in image fusion. At the time of deviation, the
sharp and blurred image brings about double vision.
Prevention and Precautions
Mental strain and lack of sleep bring tension to the eye muscles. This can be prevented by giving proper relaxation to the eye and the body. Intestinal worms and other conditions that reduce body. Resistance also make occular muscles weak.
Orthoptic exercises on Synoptophore/Stereoscope, Maddox Chereoscope, Remy Separator and with a pencil can help correct muscle balance. Covering the good eye with an eye-cover gives time for the defective eye to change to a better condition. The affected person should draw or cut pictures with the use of the defective eye. Children with normal vision should avoid the company of persons with squint as they have a tendency to imitate them. Shirts with tight collars should be avoided as they cause pressure on the nerves. For psychological reasons, parents should be patient with children who have a squint and refrain from admonishing.
Any opacity in the lens or its capsule, whether developmental or acquired, is called cataract. It is due to the aging process. Sometimes it is due to a complication caused by diabetes or an injury to the eye.