The Clinical Importance of Angle Alpha by Multifocal Intraocular Lenses.

Purpose: to evaluate the effect of visual axis positioning on the optical performance of the Tecnis MIOL and the Diff-aA MIOL.

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Key information

Conditions

IOL, Cataract Cataract Eye Diseases Eye Neoplasms Hemic and Lymphatic Diseases Immune System Diseases Immunoproliferative Disorders Intraocular Lymphoma Lens Diseases Lymphatic Diseases Lymphoma Lymphoproliferative Disorders Neoplasms Neoplasms by Histologic Type Neoplasms by Site

Age range

18 year–80 year

Sex eligibility

All sexes

Study type

Observational

About this study

In this prospective, randomized comparative study 70 eyes of 35 subjects with senile cataract were implanted with the spherical aberration correcting diffractive, bifocal Tecnis ZLB00 IOL, and 60 eyes of 30 age matched subjects with the spherical aberration neutral, diffractive, bifocal Diffractiva IOL. Observation Procedure was performed 1, 3, 6 months postoperatively. Main Outcome Measures included uncorrected and corrected distance and near visual acuity, manifest refraction, ocular aberrations and visual quality metrics with 2mm and 4mm pupil, and the position of visual axis.

Who can participate

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

corneal astigmatism less than 1 diopter

Exclusion criteria

ocular pathology others than cataract

Treatment and study plan

cataract surgery

Procedure

Phacoemulsification surgery

Primary outcomes

Visual Acuity

Time frame: 6 Month

Schnellen VA

Sponsors and collaborators

Lead sponsor

Hospital Hietzing

Other

Registry information

Official study title

The Impact of Visual Axis Position on the Optical Quality After Implantation of Multifocal Intraocular Lenses With Different Asphericity Values

Important dates

Study start: 2014
Primary completion: 2016
Study completion: 2018
First posted: Feb 18, 2020
Registry last updated: Feb 21, 2020

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Completed