A binocular vision examination involves tests of eye alignment, eye muscle strenth, focusing ability and speed, depth perception, eye tracking and others. Many of these tests are not part of a standard vision examination and may not be performed unless there is a sign or symptom of a binocular vision problem.
Symptoms and signs of binocular vision problems include:
- the appearance of a turned eye
- persistent headaches with concentrated visual tasks
- double vision
- difficulty seeing clearly after reading or computer work
- tendency to close or cover one eye when looking at something
- consistent tendency to turn or tilt the head when looking at something
- excessive blinking during concentrated visual tasks
- short attention span for reading or writing tasks
- losing place, rereading or skipping words while reading
Vision therapy is effective in treating and improving many binocular vision problems. It involves a series of eye exercises that are done at home for 20-40 minutes per day. The exercises are modified or changed at follow-up visits in the clinic every 4-6 weeks. The use of eyeglasses or contact lenses may be necessary, along with vision therapy exercises.