Other charts

For Visual acuity levels beyond the limit of the letter charts, the common practice is for clinicians to categorize vision according to whether the patient can count fingers (CF) or detect hand motion (HM), but there is no recognized or standard procedures for doing this.

Rosenbaum Pocket Vision Screening Card utilizing PV Numbers™ provides 20/800 distance equivalent testing when held at a distance of 16 inches (40 cm).

It  very effective tool for patient self-detection and emergency medicine providers for a screening test to promote early diagnosis of retinal detachment.