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First Author: S.García-Lázaro SPAIN
Co Author(s): T. Ferrer-Blasco C. Pérez-Vives A. Del Águila-Carrasco R. Montés-Micó
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To assess and compare the effects of contact-lens based artificial pupil design and contralateral balanced multifocal contact lens combination (CBMCLC) on visual performance.
University of Valencia, Spain
In a cross-over study design, 38 presbyopic patients were evaluated using an artificial pupil contact lens on the non-dominant eye and CBMCLC. After 1 month, binocular distance visual acuity (BDVA), binocular near visual acuity (BNVA), defocus curve, binocular distance and near contrast sensitivity and near stereoacuity (NSA) were measured, under photopic conditions (85 cd/m2), in each patient after contact lens fitting. Moreover, BDVA and binocular distance contrast sensitivity were examined under mesopic conditions (5 cd/m2).
Visual acuity at intermediate distances and near vision was better with CBMCLC than with artificial pupil (p<0.05). Statistically significant differences were found between the contrast sensitivity with the two types of correction for both distance under mesopic conditions and near, with CBMCLC being better in all cases (p<0.05). The mean values of SA obtained for artificial pupil contact lens were significantly worse than for CBMCLC (p=0.001).
CBMCLC provides greater visual performance for intermediate and near vision than artificial pupil contact lens