Chicken and Egg

A portable Electronic Field Screening System

SETTING UP

OMELETTE TEST
There is then a choice of tests. The so-called 'omelette test' is a sequence of different tests, including ones to orientate the patient to the tests, screening for gross loss of hemianopias (Figure 2), nasal step assessment for glaucoma (Figure 3), a gross peripheral assessment and a version of a maculopathy screening test.

CHICKEN AND EGG TEST 32-POINT SCREENING TEST
This begins, as with many of the tests, with a title screen on which an animated chicken is fixated by the patient as it is heard to crow in the background. The charts are then displayed on which an egg will appear at some point on the screen and the patient reports having seen it. A control slide (without an egg) helps validate fixation as, when the slide is about to appear (signalled by a bell) the patient's fixation may be closely monitored to see if it moves around the screen looking for the nonexistent egg.

If defects are suspected (eggs missed), then the 100 egg test should be used..