The Thomson Paediatric Screening Test Chart will run on almost any computer (laptop, PC or tablet) running Windows 7 or later.


The program will automatically sense the screen resolution and following a simple calibration, the size of the LogMAR letters are displayed with sub-pixel accuracy.


For visual acuity testing, the screen luminance should be greater than 80 cdm-2 and the screen should have a contrast in excess of 98%.  Most modern screens exceed these minimum standards.


If you have any further questions about the suitability of your hardware, please contact us at support@thomson-software-solutions.com