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Binocular vision assessment is important to assess the ability to maintain visual focus on an object with both eyes, to create one single image. With a properly functioning binocular vision system, the two separate images from the two eyes are combined into one image in the brain. For individuals suffering from Binocular Vision Disorders, the two separate images from the two eyes cannot be successfully merged into one image in the brain.
BINOCULAR
VISION
ASSESSMENT
Binocular Vision Assessment
Signs and Symptoms of Binocular Vision Disorders
- Abnormal adaptations to posture, or position
- Abnormal fatigue
- Avoidance of reading or near-task work
- Blurred vision (near vision or distance vision)
- Closing or covering one eye while working on the computer or reading
- Clumsiness or lack of coordination
- Difficulty sustaining near focus, near visual function
- Dizziness
- Double vision
- Eye strain – often related to prolonged, visually demanding near-centered tasks such as computer use or reading
- Fatigue while reading
- Headaches
- Images that appear to move in the peripheral vision, when they aren’t really moving
- Light-headedness
- Motion sickness, car sickness
- Moving the head side to side while reading
- Nausea
- Photophobia – light sensitivity
- Poor depth perception
- Re-reading text for comprehension
- Shadowed vision (letters or words appear shadowed, or shaded)
- Skipping lines, or losing place while reading
- Using a finger as a guide when reading
- Vestibular issues (problems with balance)
- Walking into door frames, edges of tables, corners of counters, and furniture
- Words running together while reading
When a BV Examination is done following functions and visual skills are assessed
- Accommodation
- Convergence
- Depth perception (3D)
- Fusion
- Ocular motility
- Ocular posture
- Presence of conditions that affect binocular vision functioning
- Tracking
- Vergence
- Visual acuity
- Visual-motor integration
- Visual perception
- Visual processing speed
- Working memory
