Description: Sloan letters designed by Louise Sloan in 1959 are a set of optotypes used to test visual acuity generally used in Snellen charts and logMAR charts
By: luiscoentro
Date: 2015-07-16
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Filesize: 12424
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Sloan Letters sourced from Openclipart is licensed under CC0 1.0
* Note: Date might not match original source and might be an educated guess.