To evaluate the clinical outcomes with an extended range of vision (ERV) IOL based on achromatic diffractive technology.
This was a prospective comparative study including 60 eyes undergoing cataract surgery with implantation of the ERV Tecnis Symfony IOL (Abbott Medical Optics, Inc.) (ERV group: 60 eyes of 30 patients). Visual, refractive, contrast sensitivity, defocus curve, ocular optical quality (Optical Quality Analysis System; iTrace), and visual function questionair(NEI-VFQ 25) outcomes were evaluated during a 3-month follow-up.
Study Type
OBSERVATIONAL
Enrollment
30
This prospective comparative study included 60 eyes undergoing cataract surgery with implantation of an extended range of vision IOL.(Abbott Medical Optics, Inc.)
Ophthalmology and Optometry Hospital
Wenzhou, Zhejiang, China
Uncorrected distance VA(5m,66cm,40cm)
logarithmic visual acuity chart
Time frame: After operation (Month 3)
Questionnaire concerning halo and visual function
NEI-VFQ 25 patient questionnaire score. The questionnaire consisted of 3 parts. The first part assessed patients' satisfaction with their overall vision during the day, or at night. The score ranged from 1 to 5 (1 = not at all; 2 = a little bit; 3 = moderately; 4 = quite a bit; 5 = extremely). In part 2, patients were asked to rate the extent to which they have difficulties with their overall vision during the day or at night. The score ranged from 1 to 5 (1 = none of the time; 2 = some of the time; 3 = half of the time; 4 = most of the time; 5 = all of the time). In part 3, patients were asked to rate their overall vision and their vision at near, intermediate, and distance on a scale ranging from 0 to 10 (0 = worst; 10 = best).
Time frame: After operation (Month 3)
abberation and kappa angle
iTrace visual function analyzer
Time frame: After operation (Month 3)
MTF cut-of and OSI
MTF cut-of and OSI values measured by optical quality analysis system \[OQAS\]
Time frame: After operation (Month 3)
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