1. A system for photoscreening an eye of an examinee, comprising an image display; an ocular irradiation source; an image detection system that captures one or more ocular images of the examinee when viewing the image display when the ocular irradiation source is active; and a device positioned in the system to be between the eye of the examinee and the image detection system during photoscreening for shifting the neutralization of the system to a desired region for a specific population of examinees.