Optimark Trial Frame is a high quality instrument that will last for many years. The Standard frame has metal gears unlike the plastic gears found in less expensive models.
Features:
Multitudes of adjustments and pinpoint accuracy make it a great choice for students and professionals alike.
Accommodates 3 pairs of trial lens in front and 1 pair in the rear.
Separate right and left PD adjusts from 48 to 80mm.
Includes vertex distance measurements for low vision patients.