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Configuration
- Base: 4" H x 8" W x 9" D (Approximately 10 cm x 20 cm x 22 cm); 3 lbs.
- Stimulator: 9" L x 3" W x 3" D (Approximately 22 cm x 7 cm x 7 cm); less than 1 lb.
- Power: 115/220 V 50/60 Hz, 20 Watts
- Equipped with Graphing Software
Dark Adaptometry
- Pre-adapting field of 1000 cd • m-2 for 60 seconds (timed). May be bypassed for measurement of final dark-adapted threshold.
- Timer resolution is 0.1 minutes. Will measure time to several hours.
- Stimulus is ½ second flash.
- Intensity is adjustable over a 3 log unit range in 0.1 log unit steps.
Whole-field Scotopic Sensitivity
- Implements modified test of Glovinsky et al.
- No need for steady fixation or refractive correction. Results are relatively unaffected by mild cataract.
- Stimulus is 4 seconds of 1 Hz sinewave flicker.
- Intensity is adjustable over a 3 log unit range in 0.1 log unit steps.
Reference
1. Glovinsky Y, Quigley HA, Drum B, Bisset RA, Jampel HD. A whole-field scotopic retinal sensitivity test for the detection of early
glaucoma damage. Archives of Ophthalmology 1992; 110:486-490.
Example Dark Adaptometry Curve for Normal and Congenital Stationary Night Blindness
LKC Technologies, Inc., established in 1975, is an ISO 13485 certified and FDA registered medical device manufacturer with electrophysiology equipment installations in over forty countries.
Resources (PDF):
SST-1 Brochure
SST-1 vs. Goldmann-Weekers
SST-1 User's Manual
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