Fig. 1: Methods. | Eye

Fig. 1: Methods.

From: Pushing the envelope: the feasibility of using a mailed contrast sensitivity test to prioritise cataract waiting lists

Fig. 1

A Contents of the test pack posted to each patient (see body text for details). B Close-up of the SpotChecks test, including the circular targets that the user must circle or tick. There were six variants in total (A–F; only 4 of which are shown here). Patients were posted a random pair, with no duplication within patient. Note that the image has been enhanced for visibility—the spots in the bottom rows are not normally visible even to a normally sighted observer.

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