Peeroo Azraa Beebee Sharfaa and Fakhruddin Shamsheer Barodawala
Background: This study examines the influence of yellow filter on the contrast sensitivity function in individuals with high myopia. Through a comprehensive analysis, we explore the potential enhancement of visual perception and contrast sensitivity in this population. The findings con-tribute to our understanding of effective interventions to optimize visual outcomes for high myopes.
Purpose: A cross-sectional study was conducted where thirty-four (n=34) healthy young subjects (age range 17-25 years old) having high myopia (SER ≥ 6.00D) without any ocular pathology. Contrast sensitivity func-tion (CSF) was assessed using the Functional Acuity Contrast Test (FACT). First, the CSF was measured without the filter (baseline) then immediately after using a yellow filter (50% transmittance) and then after five minutes of adaptation of the yellow filter. The room illumination was constant at 150lux across all the subjects.
Results: One-way repeated measure ANOVA showed that there was no statistically significant difference in contrast sensitivity function for spa-tial frequencies 1.5cpd, and 12cpd. However, there was a statistically significant difference in contrast sensitivity for spatial frequencies 3cpd; F(1.46, 48.20) =28.80, 6cpd; F (1.44, 47.43) =39.99 and 18cpd F (1.53, 50.47) = 44.26.
Conclusion: There was an improvement at the moderate and high spatial frequencies (3cpd, 6cpd and 18cpd) but no changes were found at other spatial frequencies. This shows that yellow filter can help to improve the contrast sensitivity function in high myopes at moderate and high spatial frequencies
Periodicity | Biannually |
Issue-1 | October |
Issue-2 | April |
ISSN Print | 2393-8536 |
ISSN Online | 2393-8544 |
RNI No. | CHAENG/2014/57978 |
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Based on a work at https://jmrh.chitkara.edu.in/
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ISSN (p): 2393-8536; ISSN (e): 2393-8544; RNI No. CHAENG/2014/57978