Active clinical trials for "Presbyopia"

The purpose of the trial is to compare the performance of two multifocal contact lens systems/products in established presbyopic subjects.

Vision and comfort, both objective and subjective, will be assessed for single vision contact lens wearers for either the APIOC™ for Presbyopia or the APIOC™ for Presbyopia Astigmatism contact lenses.

The objective of the study was to compare the lens handling and performance of Lens A to habitually worn multifocal contact lenses and to the competitor Lens B.

The objective of the study was to compare the handling and performance of Biofinity Toric Multifocal to Ultra Multifocal for Astigmatism.

This is a single-masked, dispensing clinical trial. A total of approximately 48 myopic and 32 hyperopic eligible subjects will be targeted to complete the study. Subjects will be fit in the study lens, optimized if required and worn for approximately 2 weeks. Subjects will then have a washout period of approximately 1 week and be refit in the lenses and be dispensed for an additional 2 weeks of wear.

Experienced soft contact lens wearing subjects will be enrolled in this 1-week, confirmatory, randomized, bilateral, 2-way crossover, double masked (subject and investigator), repeated measures, dispensing study. All subjects will be seen for a Screening/Dispensing Visit at which informed consent will be obtained and eligibility will be assessed. If subjects satisfy all eligibility criteria and none of the exclusion criteria, subjects will be fit and dispensed study lenses according to unique randomization schedules that will be provided to each Investigator If vision is unsatisfactory in the original dispensed lenses, additional lens powers may be trialed.

Short and long-term analysis of the refraction correction and optical image quality of modern premium intraocular lenses (IOLs) with the establishment of a database for quality assurance and optimization the computation constants of the lens power.

This is a prospective, multicenter, post-approval active surveillance study. The purpose of this study is to report the rate of post-surgical intraocular inflammation (based upon a specified case definition) reported within a 180-day post-surgical period following attempted implantation of an ACRYSOF IQ RESTOR Toric or ACRYSOF IQ RESTOR IOL in the US.

This is a prospective single-center study of implantations of the presbyopic version of phakic intraocular lens IPCL (EyeolUK, United Kingdom).

The primary objective of this study is to evaluate the distance, intermediate and near visual performance of Clerio designed single vision and Clerio designed LIRIC modified bifocal lenses (+2.00D add) compared to commercially available single vision and multifocal lenses.