Active clinical trials for "Astigmatism"

To assess visual performance in patients with low levels (0.5-0.75 Diopters) of corneal astigmatism.

The primary objective of this study is to evaluate rotational stability and functional improvements in visual acuity of the enVista monofocal Toric IOL (MX60ET) following cataract surgery.

Evaluation of the Accuracy and Safety of the LaserArcs Femtosecond Cataract Surgery Arcuate Incision Nomogram in Patients Undergoing Cataract Surgery and Astigmatism Reduction

The primary objective of this study is to evaluate the axis orientation of LID226397 toric contact lenses.

The study hypothesis is there is no difference in the clinical performance between the test and control lenses, in particular in lens stability, toric mislocation, comfort ratings and anterior segment ocular health findings.

Evaluate the clinical performance of existing wearers of hydrogel toric lenses when refitted with Avaira toric silicone hydrogel contact lenses over 1 week of wear.

The purpose of this research study is to compare the performance of two different types of Alcon soft toric study contact lenses to obtain information on study lens orientation.

This is a crossover study of two types of contact lenses (toric orthokeratology and soft multifocals). Primary aims are to quantify correction of astigmatism, subjective and objective visual performance, aberrometry, peripheral refraction and bacterial bioburden between toric orthokeratology and soft toric multifocal contact lenses.

The purpose of this study is to obtain on-eye clinical performance data to evaluate the stability of axis orientation of DDT2 toric contact lenses in the intended population.

The purpose of this study to evaluate the overall performance of PRECISION1™ for Astigmatism contact lenses with MyDay® Toric contact lenses.