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Si Yoon Park, Tae-im Kim, Ji Won Jung, Yong woo Ji, Eung Kweon Kim, Kyoung Yul Seo, Hun Lee; Clinical efficacy of pihhole soft contact lenses for correcting presbyopia. Invest. Ophthalmol. Vis. Sci. 2016;57(12):3121.
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© ARVO (1962-2015); The Authors (2016-present)
To evaluate the efficacy and safety of pinhole soft contact lenses for correcting presbyopia
Prospective Comparative studyWe have recruited subjects who aged 45~65 years with presbyopia and do not have any other ocular disease(ex, ocular surface disease, corneal dystrophy, retinal disorders, etc.). All participants will underwent ophthalmic examination including uncorrected distance visual acuity (UDVA), uncorrected near visual acuity (UNVA), corrected distance visual acuity (CDVA), corrected near visual acuity(CNVA), Goldmann visual field test, depth of focus,contrast sensitivity test, slit-lamp examination, OSDI(ocular surface disease index) and Questionnaire about visual function and ocular symptoms. Apply pinhole soft contact lens (eyelike NoanPinhole®, seoul, south Korea, Koryo Eyetech) on non-dominant eye of participants and/or soft contact lens for distance vision on dominant eye of participants. We recommend use of pinhole contact lens at least 3 hours in a day for 1 week. And, participant will underwent the all ophthalmic examination same above 2 weeks after first apply of pinhole contact lens.
After wearing pinhole contact lenses, there were significant improvement of NVA(0.69±0.23(0.2~1.0), 0.78±0.13(0.63~1.0), 0.74±0.12(0.63~1.0) and 0.68±0.16(0.5~1.0) decimal value at 33, 40, 50 and 70cm (P=0.002, <0.001, 0.004 and 0.059)). On defocusing curve, the range of visual acuity more than 0.5 decimal value was increased(-1.5D~+1.0D to -3.0D~+1.25D after wearing lens). There was no significant different in contrast sensitivity test in all photopic condition and mesopic condition except 1.5 cycles per degree (cpd) in mesopic condition(P<0.04). There was no aggravation of corneal/conjunctival staining score and OSDI(P=0.83 and 0.16). There was significant improvement of score for Questionnaire about visual function(P<0.001). Binocular visual tests were not significantly different between before and after wearing pinhole contact lenses(P=0.25).
The Pinhole contact lens increased depth of focus and significant improvement of near vision and dose not induced significantly harmful effect on cornea. The pinhole contact lenses could be a safe and effective treatment for presbyopia.
This is an abstract that was submitted for the 2016 ARVO Annual Meeting, held in Seattle, Wash., May 1-5, 2016.
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