OD – RIGHT EYE ALWAYS ON THE TOP (oculus dextra)
OS – LEFT EYE ALWAYS ON THE BOTTOM (oculus sinistra)
CF – count fingers, estimate from how many feeet
eg : CF @ 2 ft – counting fingers from 2 feet, but not from farther
HM– HAND MOTION, has to be able to tell direction : horizontal or vertical
LP – LIGHT PERCEPTION ONLY, NOTE IF WITH PROJECTION TO UP/R/L/DOWN OR NOT
NLP – NO LIGHT PERCEPTION
Have patient stand at line, cover left eye first, let patient read with right eye first. Always mark right eye’s acuity first, then left eye. Mark the smallest line patient still can read. If patient misses more than 1 character on a line, mark line above as visual acuity.