Sight testing apparatus, England, 1930-1950
Optometrists are trained to examine eyes and prescribe visual aids such as spectacles. This is a set of trial lenses. Optometrists used them to determine the strength of spectacle lenses required. It is contained in a silk lined mahogany case. It was made in England in the mid-1900s. It also contains two pairs of frames and two test types for assessing the patient’s eyesight. Patients put on a pair of spectacle frames into which the optometrist placed various lenses. This allowed the subject’s quality of sight to be assessed.
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The branch of medicine dealing with the diseases and surgery of the visual pathways (usually the eyes or the brain).
Glossary: sight testing apparatus
Apparatus used in tests on sight