The program for dark adaptometry starts with a light adaptation phase of typically 5 minutes duration followed by a dark phase.
Tests for false positives are included to evaluate the patient's reliability.
The curve here-by shows a typical result. The ordinate scale is given in dB with a 0 dB level set at 318 cd/m2 (reference of the Goldmann perimeter).
The program for the FST test begins right after dark adaptation and measures the sensitivity threshold to full field light stimulations with a staircase strategy starting from the lowest luminance level.
This program is available on several models of the Vision Monitor:
- MonCvONE for clinical research. It includes the FST tests (full field stimulus threshold) as well as tests with several wavelenths and several locations,
- MonPackONE, for standard clinical exams and
- MonCv3, for screening exams.
For detailed specification,refer to the PDF brochure.