Linear letter acuity test book including a letter near test.
Kay Letter Test
The Kay Letter Test is a linear letter acuity test comprising eight Sloan letters that are recommended British and US Standard test letters.
It contains comprehensive LogMAR sizing at three metres from sizes 1.00 to -0.10, plus near testing with LogMAR letters and high frequency words. Additionally, Snellen equivalent sizes in metres and feet are also given.
This system uses a Crowded LogMAR test and fully complies with the recommendations for School-Entry vision screening prescribed by the UK National Screening Committee and Public Health England. Full instructions are printed on the inside cover.
The Kay Letter Test book measures 26cm x 17.5cm and all its pages can be wiped clean in compliance with infection control guidelines. In addition, the test book covers are encapsulated with robust plastic and the internal pages are matt laminated.
The test is packaged in a frosted PVC wallet with flap closure for safe storage in between uses.
An unpublished study, carried out as part of an MMed Sci (vision and strabismus) at the University of Sheffield, comparing the Keeler letter test with the Kay Letter Test found no significant difference between the test results.
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