Eye convergence is similar to crossing your eyes. Your eyes converge when you focus on near objects like reading a book, tying your shoe or sending a text message. Convergence insufficiency limits a person’s ability to work with visual information at close distances. Convergence insufficiency can even limit entertainment or leisure activities. Convergence excess is when the eyes have a strong tendency to turn in during reading and close work. It causes the same symptoms as convergence insufficiency. Eye teaming problems occur in % of children and adults. Neither of these problems are detectable when just looking at a child.
Mar 08, · The Growing Epidemic of Adult Convergence Insufficiency. When accommodative convergence is used, the extraocular muscles are being stimulated to point inward by a neurological link to the muscles that control the crystalline lens of the eye in order to change of focus from far to near. When fusional convergence is used. Keeping eye convergence on the thumb, try to watch the left image of the seen object and notice as many details as possible. Go back to the thumb again and use the same procedure for the right image of the object. If you have any problems with the “lazy eye”, you should notice that one of the images (that you see by the weaker eye) is less clear.
Dec 09, · A randomized clinical trial of vision therapy/orthoptics versus pencil pushups for the treatment of convergence insufficiency in young adults. Optom Vis Sci. ; Scheiman M, Wick B. Clinical Management of Binocular Vision: Heterophoric, Accommodative, and Eye .