To compare refractive outcomes and patient's visual quality after bilateral cataract surgery when implanting multifocal intraocular lens, monofocal with monovision or hybrid monovision.
The purpose of this study is to evaluate the results in randomized patients that receive bilateral multifocal IOLs, monofocal IOLs with monovision with emmetropia in one eye and 1.50 D of myopia in the other eye, or monofocal IOL in the dominant eye and multifocal IOL in the non-dominant eye, then evaluate visual and refractive outcomes, as well as independence for glasses after bilateral surgery with 1 year of follow up.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
30
Phacoemulsification under topical anesthesia with intraocular lens implantation.
Department of Ophthalmology and Visual Sciences from the Federal University of Sao Paulo (UNIFESP)
São Paulo, São Paulo, Brazil
Visual acuity
Binocular visual acuity in a semi-darkened room without correction to far, intermediate and near using a typical Snellen chart that is frequently used for visual acuity testing.
Time frame: 1 year
Speed reading measure
Assessment is performed to measure the speed reading in each group and compare them. Then using a timer to measure how long does it take to read the page. The speed reading is measured in words per minute (WPM).
Time frame: 1 year
Near stereopsis measure
Calculate stereopsis in each group and compare them. Stereoacuity is measured using a stereogram in which separate panels are shown to each eye.
Time frame: 1 year
Contrast sensitivity measure
Comparison between groups of the contrast sensitivity. Contrast sensitivity function at five spatial frequencies is measured with the validated instrument (Functional Vision Analyzer® (Stereo Optical, Chicago, IL, USA) with best refraction.
Time frame: 1 year
National Eye Institute Visual Functioning Questionnaire - 25 (VFQ-25) questionnaire
Time frame: 1 year
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