Which test is commonly used as a central field screening tool?

• A. Amsler Grid
• B. Octopus 900
• C. Tangent Field
• D. Central California Screener

Answer: (D)

A quick, reliable central vision screen is designed to flag central field problems so clinicians can decide if more thorough testing is needed. The Central California Screener is built for this purpose: it’s a brief, standardized central field test that can be administered quickly in a clinic, giving a straightforward assessment of whether the central visual field is intact or shows deficits. This makes it a practical first-step screening tool for central vision loss, such as macular or central scotoma issues, and helps determine if full perimetry or specialist referral is warranted.

The Amsler Grid also screens the central field, but it’s more of a self-monitoring tool and can be affected by fixation and patient interpretation, making it less ideal as a standardized screening test in a busy clinic. The Octopus 900 and Tangent Field are more extensive perimetry methods used to map larger portions of the visual field, rather than serving as a quick central screening tool.