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Relationship between Myopia Severity and Macular Retinal Thickness on Visual Performance under Different Lighting
Colin S Tan1, Kelvin Z Li2, Mellisa Tan3
1National Healthcare Group Eye Institute, Tan Tock Seng Hospital, Singapore; Fundus Image Reading Center, National Healthcare Group Eye Institute, Singapore.
Ophthalmology. Retina
|May 4, 2019
Summary
Myopia severity and retinal thickness (RT) independently impact best-corrected visual acuity (BCVA) in young men across various light conditions. Higher myopia and thinner retinas correlate with reduced vision, affecting performance under photopic, mesopic, and night-vision goggle simulations.
Area of Science:
- Ophthalmology
- Optometry
- Vision Science
Background:
- Myopia prevalence is increasing globally, particularly among young adults.
- Visual acuity is influenced by refractive error and ocular health.
- Understanding visual performance under different lighting conditions is crucial for military and civilian applications.
Purpose of the Study:
- To investigate the relationship between spherical equivalent (SE) and retinal thickness (RT) with best-corrected visual acuity (BCVA).
- To evaluate these relationships under photopic, mesopic, and simulated night-vision goggle (NVG) lighting conditions.
- To assess visual performance in young Asian adult men.
Main Methods:
- A community-based cross-sectional study involving 698 myopic and 148 emmetropic men.
- Ophthalmic examination, color fundus photography, and BCVA assessment under varying light conditions.
- Spectral-domain optical coherence tomography (OCT) for retinal thickness (RT) measurement and regression analyses.
Main Results:
- BCVA progressively worsened with increasing myopia across all lighting conditions.
- Retinal thickness (RT) was associated with visual acuity, with thinner retinas correlating with reduced BCVA.
- Higher myopia and decreased RT were independently linked to reduced BCVA (P < 0.05).
Conclusions:
- Both myopia severity and macular RT are independent factors affecting visual performance.
- These findings are relevant for understanding visual function under diverse lighting scenarios.
- Implications for visual standards in military and occupational settings.
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