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Haidinger’s brush, an entoptic phenomenon, is very useful in checking central vision loss and eccentric fixation. Haidinger’s brush is also used to provide vision training for subjects affected by eccentric fixation/lazy eye. We propose the use of Haidinger’s brush for mass self-screening of vision in cinema theatres in one go and at no cost to the subjects. We also suggest a simple projection technology for mass vision screening of subjects in waiting rooms or at shop windows of eye-care practitioners. Finally, we propose a new affordable handheld device for vision training. The test and the devices that we propose would increase public awareness of eye health, improve vision in children, and help prevent blindness in the elderly

Mass Screening of Vision in the Cinemas and a Maculascope for the Masses: Revival of Haidinger’s Brush