Vision measurement indicating impairment in one eye while the other eye has 20/40 vision.
The most important evidence for this condition is a formal visual acuity measurement for each eye taken by an eye care provider. Results should reflect best-corrected vision, meaning the test was done with the best possible glasses or contact lenses in place. Records should clearly state the acuity in each eye separately, such as 20/40 in the right eye and 20/100 in the left eye, so VA can place both values on the rating table.
Exam reports from an ophthalmologist or optometrist carry the most weight because they document standardized testing conditions. If your vision fluctuates, records showing measurements at different times can reflect the full picture. VA may also schedule its own examination to verify current acuity.
Statements from you, family members, or caregivers about how your reduced vision affects daily tasks, such as reading, driving, or recognizing faces, can help VA understand the functional impact, even though the percentage itself is determined by the acuity numbers on the chart.
Conditions that are often caused or made worse by this one. If you have any of these, they may be claimable as secondary service connection.
