Journal
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE
Volume 62, Issue 15, Pages -Publisher
ASSOC RESEARCH VISION OPHTHALMOLOGY INC
DOI: 10.1167/iovs.62.15.22
Keywords
axial length; wavelength; chromaticity; defocus; myopia
Categories
Funding
- Hyder-abad Eye Research Foundation
- Science and Engineering Research Board, India [ECR/2018/002366/LS]
Ask authors/readers for more resources
Exposure to red and green light resulted in axial elongation, while blue light inhibited axial elongation in human eyes. The impact of specific wavelength exposure on children and its application in myopia control warrants further investigation.
PURPOSE. Given the potential role of light and its wavelength on ocular growth, we investigated the effect of short-term exposure to the red, green, and blue light on ocular biometry in the presence and absence of lens-induced defocus in humans. METHODS. Twenty-five young adults were exposed to blue (460 nm), green (521 nm), red (623 nm), and white light conditions for 1-hour each on 4 separate experimental sessions conducted on 4 different days. In each light condition, hyperopic defocus (3D) was induced to the right eye with the fellow eye experiencing no defocus. Axial length and choroidal thickness were measured before and immediately after the light exposure with a non-contact biometer. RESULTS. Axial length increased from baseline after red light (mean difference + standard error in the defocussed eye and non-defocussed eye = 11.2 + 2 mu m and 6.4 + 2.3 mu m, P < 0.001 and P < 0.01, respectively) and green light exposure (9.2 + 3 mu m and 7.0 + 2.5 mu m, P < 0.001 and P < 0.001) with a significant decrease in choroidal thickness (P < 0.05, both red and green light) after 1-hour of exposure. Blue light exposure resulted in a reduction in axial length in both the eyes (-8.0 + 3 mu m, P < 0.001 in the defocussed eye and -6.0 + 3 mu m, P = 0.11 in the non-defocused eye) with no significant changes in the choroidal thickness. CONCLUSIONS. Exposure to red and green light resulted in axial elongation, and blue light resulted in inhibition of axial elongation in human eyes. Impact of such specific wavelength exposure on children and its application in myopia control need to be explored.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available