NCT01554761

Effect of Posterior Corneal Toricity on Refractive Outcome of Pseudophakia

• Status: Unknown
• Phase: Phase 4
• Study type: Interventional
• Enrollment: 30 (estimated)
• Sponsor: China Medical University, China · Academic / Other
• Sex: All
• Age: 18 Years – 80 Years
• Healthy volunteers: Not accepted

Summary

This study is to evaluate the necessity of considering posterior corneal toricity on refractive outcome of patients with cataracts and corneal astigmatism after implantation of intraocular lenses. This is determined by comparing total corneal and refractive astigmatism,and by comparing the expected refractive result with actual refractive astigmatism postoperatively,using total corneal and anterior corneal astigmatism to calculate respectively.

Conditions

• Astigmatism
• Cataract

Interventions

Type	Name	Description
PROCEDURE	phacoemulsification	After topical anesthesia with Alcaine, 3.0-mm clear corneal incisions were made. Torsional phacoemulsification was performed using the Infiniti Vision System with the OZil handpiece, a 45-degree Kelman miniflared tip, and DuoVisc viscoelastic (all from Alcon).
DEVICE	Pentacam (Oculus,Germany)examination	Total corneal astigmatism is obtained by Pentacam at every visit.

Timeline

• Start date: 2012-02-01
• Primary completion: 2012-05-01
• First posted: 2012-03-15
• Last updated: 2012-03-15

Locations

1 site across 1 country: China