ETDRS Multi Chart Projector Slide from Precision Vision®

This slide features three separate charts for accurate and precise vision testing. These charts all feature similar calibration, making the nearly interchangeable. Patti Pics, PV Numbers and Sloan optotypes are calibrated to the Snellen 5x5 grid, and show equal blurs at threshold and difficulty levels. Each optotype has been specifically chosen to yield the best results for vision testing. The use of all three types in a single slide makes the slide nearly universal and great for clinics with large and diverse patient populations.