The Sheridan Gardiner is a well established test designed for children but suitable for disabled people, those with learning difficulties or patients who do not share a common language with the examiner.
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The Sheridan Gardiner Test contains near vision, distance and a reduced Snellen Test. 
 
Also avaiable is the Sheridan Gardiner Comprehensive Test which also includes red, yellow, green and blue (near vision) orthoptic booklets plus an OAT Hamlin Chart.