Chart Measures : 7 inch x 9 inch (17.8 cm x 22.9 cm).
Testing Distance : 16 inch / 40CM
Standardized adult Sloan Letter near vision card with proportionally spaced (logMAR) lines in ETDRS, format, line sizes range from 20/400 to 20/10 (6/120 to 6/3) equivalent. This format facilitates natural left to right reading, while letter sizes decrease making testing faster amore...
Tonometer according to Prof. Schiotz for measuring the Intraocular pressure. All main parts are made of High Quality Brass and are chrome plated. Red needle enables easy reading of the scale. The instrument comes complete with 3 weights (5.5 gram, 7.5gram, 10 gram) and conversionmore...