Journal
EYE & CONTACT LENS-SCIENCE AND CLINICAL PRACTICE
Volume 42, Issue 6, Pages 380-387Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/ICL.0000000000000222
Keywords
Peripheral refraction; Aberrometry; Lag of accommodation; Radial refractive gradient contact lens; Myopia
Categories
Funding
- Fundacao para Ciencia e Tecnologia, Lisbon, Portugal [PTDC/SAU-BEB/098392/2008, PTDC/SAU-BEB/098391/2008]
- Fundação para a Ciência e a Tecnologia [PTDC/SAU-BEB/098392/2008, PTDC/SAU-BEB/098391/2008] Funding Source: FCT
Ask authors/readers for more resources
Purpose: To evaluate changes in the peripheral refraction (PR), visual quality, and accommodative lag with a novel soft radial refractive gradient (SRRG) experimental contact lens that produces peripheral myopic defocus. Methods: 59 myopic right eyes were fitted with the lens. The PR was measured up to 30 degrees in the nasal and temporal horizontal visual fields and compared with values obtained without the lens. The accommodative lag was measured monocularly using the distance-induced condition method at 40 cm, and the higher-order aberrations (HOAs) of the entire eye were obtained for 3- and 5-mm pupils by aberrometry. Visual performance was assessed through contrast sensitivity function (CSF). Results: With the lens, the relative PR became significantly less hyperopic from 30 degrees to 15 degrees temporally and 30 degrees nasally in the M and J0 refractive components (P < 0.05). Cylinder foci showed significant myopization from 30 degrees to 15 degrees temporally and 30 degrees to 25 degrees nasally (P < 0.05). The HOAs increased significantly, the CSF decreased slightly but reached statistical significance for 6 and 12 cycles per degree (P < 0.05), and the accommodative lag decreased significantly with the SRRG lens (P = 0.0001). There was a moderate correlation between HOAs and CSF at medium and high spatial frequencies. Conclusion: The SRRG lens induced a significant change in PR, particularly in the temporal retina. Tangential and sagittal foci changed significantly in the peripheral nasal and temporal retina. The decreased accommodative lag and increased HOAs particularly in coma-like aberration may positively affect myopia control. A longitudinal study is needed to confirm this potential.
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