In Pola mirror testing, what is the typical progression in testing distance?

In Pola mirror testing, what is the typical progression in testing distance?

• A. Start at near distance, then move to 3 meters.
• B. Start at 3 meters, then move to near.
• C. Only test at near distance.
• D. Distance used is random.

Answer: (A)

In this test, you want to gauge how well a person can fuse and maintain binocular vision as the visual demands change. The near distance imposes the greatest convergence and accommodation load, so starting there quickly reveals whether fusion is possible under challenging conditions. If fusion can be achieved at near, you then shift to a farther distance (3 meters) to see if that stability holds when the vergence demand is lower. This progression from near to far helps you confirm a robust sensory alignment across the typical range of functional distances. Starting at distance first could mask issues that only appear when convergence and accommodation are high, so the near-to-far sequence is the most informative approach.

In this test, you want to gauge how well a person can fuse and maintain binocular vision as the visual demands change. The near distance imposes the greatest convergence and accommodation load, so starting there quickly reveals whether fusion is possible under challenging conditions. If fusion can be achieved at near, you then shift to a farther distance (3 meters) to see if that stability holds when the vergence demand is lower. This progression from near to far helps you confirm a robust sensory alignment across the typical range of functional distances. Starting at distance first could mask issues that only appear when convergence and accommodation are high, so the near-to-far sequence is the most informative approach.