Abstract
Purpose :
Contrast sensitivity testing is an important diagnostic tool in quantifying the severity of many ocular diseases. The CSV-1000 is a commonly used modality for testing contrast sensitivity and uses a retro-illuminated screen with a paper chart, whereas the CSV-2000, a newer computerized testing device, has the capability to auto-calibrate its luminance to 85 cd/m2 and randomize test stimuli. This study seeks to compare contrast sensitivity measurements at various spatial frequencies using the CSV-1000 and the newer CSV-2000 in ocularly healthy adults.
Methods :
Thirty participants of mean age 28.3 years (range 21-63, 10M/20F) with no active ocular pathology were recruited. Participants were required to have at least 20/40 best corrected visual acuity and were instructed to wear their normal habitual ocular correction throughout testing. Contrast sensitivity was measured in both eyes using both the CSV-1000 and the CSV-2000 at four spatial frequencies (3, 6, 12, and 18 cycles per degree) per manufacturer’s recommendations. Both devices were calibrated at 85 cd/ m2. Measurements were taken twice on both machines and both the starting eye and device were randomized. Results were analyzed using analysis of variance (ANOVA).
Results :
Table 1 provides the log contrast units at various spatial frequencies obtained for the right eye and the left eye using the CSV-1000 and the CSV-2000 respectively. The log contrasts measured using the two devices were not significantly different between the right eye and left eye (ANOVA F=0.74, p=0.40).
Conclusions :
The log contrast measured using the CSV-1000 is comparable and not significantly different from the log contrast measured using the CSV-2000 in healthy eyes. Given the advantages of auto-calibration of luminance and automatic randomization of stimuli, future studies may consider using the CSV-2000 for their clinical trials.
This abstract was presented at the 2023 ARVO Annual Meeting, held in New Orleans, LA, April 23-27, 2023.