Patients report satisfaction with EDOF lens despite optical phenomena
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A diffractive extended depth of focus IOL helped improve visual acuity at 3 months after bilateral implantation, according to research presented at the European Society of Cataract and Refractive Surgeons meeting.
Thomas Kohnen, MD, presented data from a study that evaluated visual performance after bilateral implantation of the extended depth of focus (EDOF) At Lara 829MP lens (Carl Zeiss Meditec).
The study comprised 40 eyes of 20 patients. Manifest refraction and monocular and binocular uncorrected and corrected visual acuity were evaluated at 4 m, 80 cm, 60 cm and 40 cm, along with monocular and binocular defocus testing, binocular contrast sensitivity, as well as subjective quality of vision, optical phenomena and spectacle independence using a questionnaire.
Kohnen said the majority of patients experienced improvements in distance and intermediate visual acuity at 3 months postoperatively, with slightly less improvement in near visual acuity.
In the subjective quality of vision questionnaire, 15% of patients reported ghosting, 35% reported glare and 50% reported halos. Kohnen said patients reported good quality of vision during daily activities such as watching TV and driving during the day. They were slightly less satisfied with driving at night and reading a newspaper.
Kohnen said 25% of patients needed glasses for intermediate distance and 65% needed optical correction to accomplish a near distance activity. Additionally, 75% of patients reported that they were very satisfied despite experiencing some optical phenomena.
These subjective measures, along with good visual acuity improvements, show the benefit of the diffractive EDOF IOL, Kohnen said.
“For us, this is an option for vision correction of presbyopia, and in particular, this lens has the ability to go from zero to 10 D,” he said. “It’s there for the higher myopes. It’s an option for implanting an EDOF lens in this group of patients.”
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Kohnen T, et al. Clinical outcome and everyday performance of Zeiss AT LARA 829, a next generation extended depth of focus (EDoF) IOL after its bilateral implantation at three months postoperative. Presented at: European Society of Cataract and Refractive Surgeons meeting; Oct. 8-11, 2021; Amsterdam.
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