Spectacle Independence After Cataract Surgery: A Prospective Study With a Multifocal Intraocular Lens
Medical hypothesis discovery and innovation in ophthalmology,
Vol. 9 No. 1 (2020),
19 November 2019
,
Page 38-46
Abstract
Our aim was to review clinical outcome and patient satisfaction after cataract surgery to obtain spectacle independence following multifocal intraocular lens (IOL) implantation. A prospective case-series study was designed to evaluate the safety and efficacy of the Hanita FullRange pseudophakic multifocal intraocular lens in patients with programmed cataract surgery, performed between October 2017 and May 2018, with follow-up after 12 months. Manifest refraction spherical equivalent (SE), SE refractive accuracy, uncorrected distance (UDVA), intermediate (UIVA) and near visual acuity (UNVA) and a binocular defocus curve were evaluated. In addition, a short satisfaction questionnaire was developed. Surgeries were performed without viscoelastic substance. The corneal endothelial cell density (ECD), central corneal thickness (CCT), and intraocular pressure (IOP) were also evaluated. A total of 480 eyes of 240 patients with a mean ± standard deviation (SD) of age of 75 ± 6.12 years were included. The mean ± standard deviation (SD) of preoperative SE was 2.0 ± 2.18 D (range; -5.50 to 4.75) which decreased to -0.04 ± 0.28 D (range; -0.75 to 0.625) 12 months after surgery. Regarding SE refractive accuracy 82.9 % of eyes obtained SE values between -0.25 and 0.25 D. There was no loss of lines of vision and 98.3% of patients achieved UDVA between 20/20 and 20/25. The UNVA (binocular) obtained was J1 for 72.5% and J2 for 27.5% of patients. Regarding defocus curve, 0.04 logMAR for -3.0 D, 0.09 logMAR for -1.5 D and 0.03 logMAR for 0 D was achieved. The mean CCT was increased by 6.62 ± 2.79 micrometers (1.24%), the mean ECD was decreased by 226.08 ± 11.63 cell/mm2 (9.00 %) and the IOP remained stable one year after surgery. In response to the satisfaction questionnaire, 92% of patients stated that they had obtained spectacle independence. Finally, spectacle independence was achieved in most of the cases, with a high level of patient satisfaction one year after implantation of a FullRange IOL. No complications were detected. We concluded that the refractive efficacy of FullRange multifocal IOL was proved in majority of cases. A large follow up period is necessary in future studies to confirm the results.
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