Humans have two eyes and yet see a single image. In order to get a clear and single vision the two eyes work in coordination. This effortless clear single vision is the outcome of several mechanisms that involve the eye lens focusing, eye muscle movements, integration of all the sensory and motor input signals in the brain and execution of output signal in the eye.
The assessment of the sensory and motor input and output signals requires a comprehensive binocular vision examination. Within this examination there can be sub-specialty like orthoptics, vision therapy etc. Orthoptics is a discipline that assesses if the eyes are straight, predominantly examining the eye muscles.
Binocular Vision and Orthoptics clinic at LVPEI:
Why it is unique or the best option?
In the Binocular Vision and Orthoptics clinic at LVPEI, you will be first thoroughly examined for your refractive error (power in the eye) by using specialized techniques that can relieve stress in the eye. The clinic then will assess your muscle functions and focusing functions of the eye. Evaluation will be made to see if all these mechanisms are working in coordination and harmony.
Children and adults with amblyopia (lazy eye) will also be evaluated in this clinic and recommendations for exercises will be given. There are also other specialized tests that are available to evaluate problems with aniseikonia, glare, visual discomfort etc.
All we need to know about Binocular Vision:
What can go wrong with binocular vision?
There are times when the two eyes are not able to work in unison because of many reasons like unequal refractive power in two eyes or muscle imbalance between the two.
Why does binocular vision get hampered/ disturbed?
There can be many reasons why this can happen, but the exact reason for the aetiology is still under research. Additionally, in some individuals, computer work and reading can add extra strain to the visual system, if there is no harmony between the two eyes.
How can binocular vision be fixed or made optimum?
Depending on the underlying reason why eye strain is occurring, several-therapy and exercises can be planned to bring the two eyes to team up together to provide clear and single vision. Additionally, spectacle prescription that may or may not include prism prescription can also be given.
Who should visit Binocular Vision and Orthoptics clinic?
Anyone with signs of headache and uneasiness associated with vision-related tasks, experiencing visual fatigue or sleepiness when reading, and occasionally seeing double or blurred will need a binocular vision examination. Children or adults who are diagnosed with lazy eye (amblyopia) can also utilize the services of this clinic to help their both eyes team up better.
How much time would it take for evaluation?
A detailed binocular vision examination can take up to 1.5 to 2 hours for one patient. Some patients can take longer time when adaptation with prisms or lenses is recommended. Patients coming for vision therapy exercises can expect to have an hour's visit.