Which tool can be used to perform accommodative facility testing with suppression cues by presenting lines to only one eye?

Which tool can be used to perform accommodative facility testing with suppression cues by presenting lines to only one eye?

• A. R/G Bar Reader
• B. Stereoscope with hints
• C. Acuity Suppression Vectogram #9
• D. Polarized Bar Reader

Answer: (C)

Accommodative facility testing with suppression cues relies on provoking a response to a visual target while using a monocular cue to trigger suppression, so the tester can see how quickly and accurately the eye can adjust focus under dichoptic conditions. The Acuity Suppression Vectogram #9 is designed for this exact scenario: it presents a line-based acuity target to only one eye, while the other eye receives a different image or is suppressed. This monocular presentation creates a suppression cue, forcing the patient to rely on accommodation to resolve the target as demands change, which lets you measure how readily the accommodative system can shift focus when suppression is in play. Other tools either emphasize suppression detection without tying in the accommodative facility task, or focus on fusion or stereopsis rather than delivering a monocular line target to drive accommodative responses.

Accommodative facility testing with suppression cues relies on provoking a response to a visual target while using a monocular cue to trigger suppression, so the tester can see how quickly and accurately the eye can adjust focus under dichoptic conditions. The Acuity Suppression Vectogram #9 is designed for this exact scenario: it presents a line-based acuity target to only one eye, while the other eye receives a different image or is suppressed. This monocular presentation creates a suppression cue, forcing the patient to rely on accommodation to resolve the target as demands change, which lets you measure how readily the accommodative system can shift focus when suppression is in play. Other tools either emphasize suppression detection without tying in the accommodative facility task, or focus on fusion or stereopsis rather than delivering a monocular line target to drive accommodative responses.