This book contains five vision tests
logMAR Visual Acuity Chart
Word Reading Chart
HOTV Single Line Chart
Tumbling E Chart
Contrast Sensitivity Test
Unlike printed tests, these charts require no external lighting and display on the iPad without need for special software or calibration. The test utilizes the high quality iPad screen to produce print as small as 2 point
Scoring
The acuity tests can be performed at any distance. The Snellen fraction may be specified as test distance/lowest line read, e.g. 0.4/1.25 for 1.25 M print read at 40 cm. This would convert to a Snellen equivalent of 20/63.
Important Notes
The letters display best on the Retina Display.
They are scaled for the full size iPad.
For more information visit ridgevue.com
