Posters

Effects of pinhole contact lens for presbyopia on visual performance

Poster Details

First Author: S.Park SOUTH KOREA

Co Author(s):    I. Jun   K. Kim   G. Lee   J. Min   E. Kim   T. Kim     

Abstract Details

Purpose:

To evaluate the effects provided with pinhole contact lens for presbyopia.

Setting:

Department of Ophthalmology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.

Methods:

From October 2018 to December 2018, 29 presbyopic participants were evaluated using newly developed pinhole soft contact lens (EyeLike II, Koryoeyetech Co. Ltd., Seoul, South Korea). During 1 week, the patients were applied pinhole soft contact lens for more than 3 hours per day to non-dominant eye. All subjects underwent examination before and after contact lens fitting including binocular and monocular uncorrected near visual acuity (UNVA), distance-corrected near visual acuity (DCNVA), uncorrected distance visual acuity (UDVA) and corrected distance visual acuity (CDVA). Binocular defocus curve and contrast sensitivity were measured under photopic and mesopic conditions.

Results:

The mean DCNVA of treated eye and the mean binocular DCNVA changed from 0.34 ± 0.12 to 0.16 ± 0.15 logarithm of minimal angle of resolution (logMAR) unit (P < 0.01), and from 0.31 ± 0.13 to 0.11 ± 0.09 logMAR unit (P < 0.01), respectively. Although the mean CDVA of treated eye decreased from -0.04 ± 0.05 to 0.02 ± 0.11 logMAR unit (P = 0.02) there was no definite change of the mean binocular CDVA (P = 0.78). Lastly, binocular defocus curve was improved, while no significant differences in binocular contrast sensitivities was noted.

Conclusions:

This newly developed pinhole contact lens improved the near visual acuity without significant deterioration of far vision and contrast sensitivity.

Financial Disclosure:

None