George H H Beiko1. 1. From McMaster University, Hamilton, Ontario, Canada. Electronic address: georgebeiko@hotmail.com.
Abstract
PURPOSE: To compare near vision and quality of vision after controlling for pseudoaccommodation in patients with single-optic accommodating intraocular lenses (IOLs) or monofocal IOLs targeted for mini-monovision. SETTING: Clinical practice. DESIGN: Prospective randomized controlled clinical trial. METHODS: Patients were randomized to bilateral implantation of the Crystalens HD silicone accommodating IOL, the Tetraflex acrylic accommodating IOL, or the Tecnis 1-piece monofocal (nonaccommodating) control IOL. The target refraction for the control group was mini-monovision (-0.25 diopter [D] and -0.75 D). In the accommodating IOL groups, manufacturer recommendations were followed; that is, a target refraction of mini-monovision (-0.25 D and -0.75 D) in the acrylic accommodating group and +0.25 D in the silicone accommodating group. Pupil size and anterior corneal spherical aberration were measured preoperatively. Main outcome measures were binocular target refraction corrected near vision and contrast sensitivity 3 months postoperatively. RESULTS: There were no statistically significant differences between the 3 groups in age, photopic or mesopic pupil size, anterior corneal spherical aberration, corneal astigmatism, or the power of the IOLs implanted. Binocular distance visual acuity at 4 m was 20/20(-) in all groups, intermediate vision was approximately 20/25, and near vision was 20/40 to 20/50. There were no statistically significant differences between the 3 groups in visual acuity or contrast sensitivity. CONCLUSION: Single-optic accommodating IOLs did not offer a significant advantage in near visual acuity over mini-monovision with a monofocal (nonaccommodating) IOL.
RCT Entities:
PURPOSE: To compare near vision and quality of vision after controlling for pseudoaccommodation in patients with single-optic accommodating intraocular lenses (IOLs) or monofocal IOLs targeted for mini-monovision. SETTING: Clinical practice. DESIGN: Prospective randomized controlled clinical trial. METHODS:Patients were randomized to bilateral implantation of the Crystalens HDsilicone accommodating IOL, the Tetraflex acrylic accommodating IOL, or the Tecnis 1-piece monofocal (nonaccommodating) control IOL. The target refraction for the control group was mini-monovision (-0.25 diopter [D] and -0.75 D). In the accommodating IOL groups, manufacturer recommendations were followed; that is, a target refraction of mini-monovision (-0.25 D and -0.75 D) in the acrylic accommodating group and +0.25 D in the silicone accommodating group. Pupil size and anterior corneal spherical aberration were measured preoperatively. Main outcome measures were binocular target refraction corrected near vision and contrast sensitivity 3 months postoperatively. RESULTS: There were no statistically significant differences between the 3 groups in age, photopic or mesopic pupil size, anterior corneal spherical aberration, corneal astigmatism, or the power of the IOLs implanted. Binocular distance visual acuity at 4 m was 20/20(-) in all groups, intermediate vision was approximately 20/25, and near vision was 20/40 to 20/50. There were no statistically significant differences between the 3 groups in visual acuity or contrast sensitivity. CONCLUSION: Single-optic accommodating IOLs did not offer a significant advantage in near visual acuity over mini-monovision with a monofocal (nonaccommodating) IOL.
Authors: David P Piñero; Vicente J Camps; MarIa L Ramón; Verónica Mateo; Rafael J Pérez-CambrodI Journal: Indian J Ophthalmol Date: 2015-05 Impact factor: 1.848
Authors: Mohammad Mehdi Sadoughi; Bahram Einollahi; Danial Roshandel; Mohammad Sarimohammadli; Sepehr Feizi Journal: J Ophthalmic Vis Res Date: 2015 Oct-Dec