Active clinical trials for "Astigmatism"

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.

Prospective study to evaluate the clinical performance of fanfilcon A toric contact lens and senofilcon A toric contact lens after two weeks of wear.

This study seeks to quantify digital visual performance and subjective visual acceptance of toric contact lenses as compared to spherical lenses in low to moderate astigmatic patients.

Photorefractive keratectomy (PRK) involves mechanical or alcohol assisted debridement of the epithelium that leads to potential basement membrane (BM) injury ,with resultant more significant haze and pain compared to laser assisted epithelial removal known as 2 step trans-epithelial PRK (PTK-PRK). Our study is focusing on comparing the outcomes of the conventional 2 step trans-epithelial PTK-PRK to the new single step trans-epithelial PRK (StreamLight PRK, Alcon lab, TX, USA).

The objective is to evaluate the fit characteristics (primary gaze orientation, rotational recovery, and movement) of kalifilcon A daily disposable toric lenses as compared to commercially available Ultra for Astigmatism lenses.

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.

Non-randomized, single-masked, 2-visit, bilateral wear, single-arm dispensing study to evaluate the visual acuity, rotational performance, lens fit, stability and subjective characteristics of a senofilcon-based JJVCI investigational toric contact lens design.

Prospective, multicenter, bilaterally-treated, open-label, non-randomized clinical trial.

Bilateral dispensing clinical trial of fanfilcon A toric lens verses enfilcon A toric lens over two weeks.

This is a prospective, multi-center, subject-masked, bilateral, daily wear, two-month dispensing study