Eyesight test chart. Lightbox with rows of letters of varying size. The letters are mirror images, designed to be read in a mirror. This allows a mirr

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Eyesight test chart. Lightbox with rows of letters of varying size. The letters are mirror images, designed to be read in a mirror. This allows a mirror to be placed at the required distance, rather than moving the lightbox itself. The patient is asked to read the letters from a particular row, allowing an optician or ophthalmologist to assess the patient's eyesight. Photographed at the Princess Alexandra Eye Pavilion, Edinburgh, Scotland.

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Size: 4992px × 3328px
Photo credit: © LEWIS HOUGHTON/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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