Profile: Thomson Software Solutions supplies software for vision testing and screening. Our products include test chart, echart, ichart, pc hess screen, school screener, and insight. Our Test Chart 2000 LITE is suitable for environments where the main requirement is to measure visual acuity, for example, some hospital rooms, diabetic screening units, occupational health departments and GP surgeries. Our Test Chart 2000 XPert replaces Test Chart 2000 PRO and contains an unrivaled suite of vision assessment tool for optometrists, ophthalmologists and orthoptists. Our city coloured overlay screener is a computer program that determines the optimum colour. Our city coloured overlay screener simulates the effect of overlays by changing the background colour on a portion of the screen.