The criteria for certification for Greater Independence in Everyday Life

Visual field refers to your peripheral awareness while focusing straight ahead. It captures everything you can see to the sides, above, and below your direct line of sight.

Both central clarity and side vision are examined together. The specialist considers how these measurements combine before making a certification decision.

Visual acuity is tested with the Snellen chart, which displays rows of letters decreasing in size. You read from the top downward as the characters become progressively smaller.

Normal detail vision is recorded as 6/6, matching the lowest lines most people can read. If only the largest letter at the top is visible, the result is written as 6/60.

This notation means you distinguish at six metres what a person with typical vision identifies from sixty metres away. The ratio shows the gap between your sight and standard acuity.

Tests may be conducted at three metres instead of six. When that happens, the first number changes to reflect the closer distance, such as 3/60 for someone reading only the top line from three metres away.

Good central vision usually requires significant peripheral loss before certification is considered. You might need to have lost most of your side sight to meet the threshold.

Conversely, preserving your full visual field means your central acuity must be quite poor to qualify. The two factors balance against each other in the assessment.

Tunnel vision with acuity between 3/60 and 6/60 represents one scenario where certification may apply despite reasonable central clarity.

Acuity of 6/60 or worse paired with substantial field loss, particularly when the lower portion is affected, can meet certification standards.

Even better vision, around 6/18, may qualify if half your field is missing or peripheral sight is severely restricted.

If treatment is underway that might restore vision, the ophthalmologist may delay certification until the outcome is clear.