Retinal Acuity
Meter Plus Contrast Acuity Meter (COMBO)
RAM®
with CAM
Soon to be released
Units available for Clinical trial call 877-744-3937
AMA Optics, Inc. is offering the
Contrast Acuity Meter™ with the Retinal Acuity Meter as an experimental
tool for those wishing to study contrast sensitivity using this
hand-held and easy-to-use instrument. The internally controlled
lighting sets it apart from other near contrast sensitivity tests.
The combo unit allows the clinician to
measure three important parameters:
1. Current visual acuity
2. The disability of cataract on images of varying contrast
3. The potential post-op benefit of surgery (RAM)
Contrast Sensitivity
The EYE Chart:
Nine lines of letters are presented from 20/100 to 20/20.
The Contrast Sensitivity lines of letters are indexed in
RED
on the disc while the high contrast letters for the RAM test are
BLACK. Lines of graded contrast letters are alternated with
high contrast letters.Graded
contrast letters are 4%, 11%, 25%, 50%, and 96% contrast
The filter attenuates the
luminance to 85 cd/m2 average
across window brightness.
Contrast sensitivity testing
is performed at near with near correction and without a pinhole.
Retinal Acuity testing
Same as
the standard RAM®
