Berens Accommodation Rule
for Near Point Testing
The Berens Accommodation Rule for near point testing incorporates 10mm black test figures on white plastic ruler. This instrument features a 50cm long ruler with engraved scales in centimeters and inches, Duane Age and Dioptric scales. The Berens Accomodation Rule is supplied with test cards. These test cards clip to a fixure, allowing them to slide back and forth along the scale.