One of the mysteries of the English language finally explained.
treated as singular The study or treatment of disorders of vision, especially of eye movements or eye alignment.
- ‘Orthoptists are concerned with the diagnosis and treatment of ocular motility and problems relating to vision.’
- ‘Situated in a busy teaching hospital, the Academic Unit of Ophthalmology and Orthoptics provides facilities for both clinical and laboratory based research.’
- ‘It will also facilitate speech and language therapy, community welfare, orthoptics, psychology, home support services, home meals services and day care services for older people.’
- ‘Orthoptics, which literally means "straightening of the eyes", dates back to the 1850s and is limited in scope to eye-muscle training and the cosmetic straightening of eyes.’
- ‘A course in orthoptics takes three years of study.’
Late 19th century: from ortho- ‘correct’ + Greek optikos (see optic).
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