Cataract, IOL
Conditions
Keywords
multifocal IOL, ocular optical quality, abberation
Brief summary
To evaluate the clinical outcomes with an extended range of vision (ERV) IOL based on achromatic diffractive technology.
Detailed description
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.
Interventions
DEVICEZXR00
This prospective comparative study included 60 eyes undergoing cataract surgery with implantation of an extended range of vision IOL.(Abbott Medical Optics, Inc.)
Sponsors
Wenzhou Medical University
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
20 Years to 85 Years
Healthy volunteers
No
Inclusion criteria
* visually significant cataract * age of 20 years or older * preoperative corneal astigmatism of 1.50 diopters (D) or lower.
Exclusion criteria
* previous ocular surgery * active ocular pathology * amblyopia * systemic or ocular medication that could affect vision * subclinical or clinical corneal ectatic disease * pupil abnormalities * intraoperative complication leading to capsular or zonular abnormalities
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Uncorrected distance VA（5m，66cm，40cm） | After operation （Month 3） | logarithmic visual acuity chart |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Questionnaire concerning halo and visual function | After operation （Month 3） | 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). |
| abberation and kappa angle | After operation （Month 3） | iTrace visual function analyzer |
| MTF cut-of and OSI | After operation （Month 3） | MTF cut-of and OSI values measured by optical quality analysis system \[OQAS\] |
Countries
China
Outcome results
None listed