Galadriel Giménez-Calvo1,2,3, Francisco de Asís Bartol-Puyal4,5,6, Irene Altemir4,5,6, Silvia Méndez-Martínez4,5, Cristina Almenara4,5, Diana Soriano-Pina4,5, Ane Murueta-Goyena7,8, José Manuel Larrosa4,5,6. 1. Ophthalmology Department, Miguel Servet University Hospital, Paseo Isabel la Católica, 1-3, 50009, Zaragoza, Spain. ggimenez@unizar.es. 2. Miguel Servet Ophthalmology Research Group (GIMSO), Aragón Institute for Health Research (IIS Aragón), Zaragoza, Spain. ggimenez@unizar.es. 3. University of Zaragoza, Zaragoza, Spain. ggimenez@unizar.es. 4. Ophthalmology Department, Miguel Servet University Hospital, Paseo Isabel la Católica, 1-3, 50009, Zaragoza, Spain. 5. Miguel Servet Ophthalmology Research Group (GIMSO), Aragón Institute for Health Research (IIS Aragón), Zaragoza, Spain. 6. University of Zaragoza, Zaragoza, Spain. 7. Neurodegenerative Diseases Group, Biocruces Bizkaia Health Research Institute, Barakaldo, Bizkaia, Spain. 8. Department of Neurosciences, University of the Basque Country (UPV/EHU), Leioa, Bizkaia, Spain.
Abstract
BACKGROUND: To assess the influence of biometric measurements on the defocus curve after the implantation of enlarged depth-of-focus (EDoF) intraocular lens (IOL). METHODS: Patients who underwent cataract surgery with bilateral implantation of Tecnis Symfony IOL were enrolled. Preoperatively, axial length (AL), corneal keratometry (K), pupil size and corneal aberrations were measured. 1 month after surgery, distance, intermediate, and near visual acuities (VA) were recorded. At 3 months, monocular and binocular corrected contrast sensitivities under photopic and mesopic lighting conditions were measured with CSV-1000E test. At 6-months, the defocus curve between -5.00 to + 3.00 diopters (D) was assessed in steps of 0.50 D, and NEI-RQL-42 questionnaire was administered. RESULTS: One hundred thirty one eyes of 66 patients were included. Binocular logMAR VA better than 0.1 for intermediate vision was obtained in 90% of patients, whereas only 17.7% obtained that result in near vision. The rate of satisfaction was high (96%) and most of them (85.5%) had no or little difficulties in near vision. The mean amplitude of the defocus curve was 2.35D ± 0.73D, and smaller AL, smaller pupils, younger age, and male sex were associated with wider range of clear vision. CONCLUSIONS: Tecnis Symfony IOL enables functional vision at all distances, but demographic variables and preoperative biometric measurements like AL and pupil size influence the postoperative amplitude of the defocus curve. These parameters could be used to predict the performance of EDoF IOLs.
BACKGROUND: To assess the influence of biometric measurements on the defocus curve after the implantation of enlarged depth-of-focus (EDoF) intraocular lens (IOL). METHODS: Patients who underwent cataract surgery with bilateral implantation of Tecnis Symfony IOL were enrolled. Preoperatively, axial length (AL), corneal keratometry (K), pupil size and corneal aberrations were measured. 1 month after surgery, distance, intermediate, and near visual acuities (VA) were recorded. At 3 months, monocular and binocular corrected contrast sensitivities under photopic and mesopic lighting conditions were measured with CSV-1000E test. At 6-months, the defocus curve between -5.00 to + 3.00 diopters (D) was assessed in steps of 0.50 D, and NEI-RQL-42 questionnaire was administered. RESULTS: One hundred thirty one eyes of 66 patients were included. Binocular logMAR VA better than 0.1 for intermediate vision was obtained in 90% of patients, whereas only 17.7% obtained that result in near vision. The rate of satisfaction was high (96%) and most of them (85.5%) had no or little difficulties in near vision. The mean amplitude of the defocus curve was 2.35D ± 0.73D, and smaller AL, smaller pupils, younger age, and male sex were associated with wider range of clear vision. CONCLUSIONS: Tecnis Symfony IOL enables functional vision at all distances, but demographic variables and preoperative biometric measurements like AL and pupil size influence the postoperative amplitude of the defocus curve. These parameters could be used to predict the performance of EDoF IOLs.
Authors: Emilio Pedrotti; Francesco Carones; Pietro Talli; Erika Bonacci; Federico Selvi; Alice Galzignato; Andrea Besutti; Alessandra De Gregorio; Giorgio Marchini Journal: BMJ Open Ophthalmol Date: 2020-10-14