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A functional scoring method for the field of binocular single vision
T J Sullivan1, S P Kraft, C Burack
1Department of Ophthalmology, Hospital for Sick Children, Toronto, Ontario, Canada.
Ophthalmology
|April 1, 1992
Summary
This study introduces an improved method for measuring binocular single vision (BSV) fields using a cross-shaped target. This technique enhances accuracy in assessing diplopia and aids in patient evaluation and treatment planning.
Area of Science:
- Ophthalmology
- Neuroscience
- Vision Science
Background:
- Assessing binocular single vision (BSV) is crucial for diagnosing and managing diplopia.
- Traditional methods using a spot target have limitations in detecting cyclotorsion and accurately quantifying BSV fields.
Observation:
- A modified Goldmann perimeter was used to project a cross-shaped fusion target.
- This new method allows for the plotting of BSV fields in patients with horizontal, vertical, and cyclotorsional diplopia.
Findings:
- The cross-target method demonstrated reproducible and easy-to-perform BSV scoring.
- In 39% of patients, scores differed by over 10% between the new cross-target and traditional spot-target methods, highlighting the clinical significance of the improved technique.
Implications:
- This novel approach offers a more accurate and comprehensive assessment of BSV fields.
- The method is valuable for preoperative/postoperative evaluations, serial monitoring, and disability assessments in patients with acquired diplopia.