Designed as a rapid test for checking current prescription and accuracy of the add to be prescribed. Line increments in logMAR units in Snellen equivalent.
Acuity range 8.0M to .4M (20/400 to 20/20).
Measures 9.5x16cm (3.5×6.5in)
Includes one Word and one Number recognition chart for rapid testing prescription and accuracy.
Dimensions: 3.5 × 6.5 in