Which test is administered as a combined after-image test to help assess anomaly angles?

Which test is administered as a combined after-image test to help assess anomaly angles?

• A. HBAIT
• B. Haidinger's Brush and Brock Givner After Image test combined
• C. Maxwell's spot
• D. Cuppers Bifoveal Test

Answer: (B)

Anomaly angles are estimated by how the brain interprets after-images from each eye when fusion is challenged. The Haidinger’s Brush provides a central macular reference that you can see with a simple, stable after-image cue. When you pair this with the Brock-Givner After Image test, you introduce independent after-images presented to each eye. By comparing where these after-images appear relative to the fixation target, you can gauge the misalignment between the eyes and quantify the angle of deviation. This combination is especially useful because it gives two reliable cues about where each eye is fusing (or failing to fuse) the image, making the measured angle more accurate than using a single after-image test alone. Other options describe different macular or bifoveal tests that aren’t designed as a combined after-image approach for assessing anomaly angles, so they don’t serve the same purpose in this context.

Anomaly angles are estimated by how the brain interprets after-images from each eye when fusion is challenged. The Haidinger’s Brush provides a central macular reference that you can see with a simple, stable after-image cue. When you pair this with the Brock-Givner After Image test, you introduce independent after-images presented to each eye. By comparing where these after-images appear relative to the fixation target, you can gauge the misalignment between the eyes and quantify the angle of deviation.

This combination is especially useful because it gives two reliable cues about where each eye is fusing (or failing to fuse) the image, making the measured angle more accurate than using a single after-image test alone. Other options describe different macular or bifoveal tests that aren’t designed as a combined after-image approach for assessing anomaly angles, so they don’t serve the same purpose in this context.