Effect of Posterior Corneal Toricity on Refractive Outcome of Pseudophakia

Phase 4

• Conditions: Astigmatism; Cataract

• Registration Number: NCT01554761
• Lead Sponsor: China Medical University, China

Brief 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.

Detailed Description

Not available

Study Timeline

• Study Start: 2012-02
• Study First Submitted: 2012-02-27
• Status Verified: 2012-03
• Study First Submitted QC: 2012-03-13
• Last Update Submitted: 2012-03-13
• Study First Posted: 2012-03-15
• Last Update Posted: 2012-03-15
• Primary Completion: 2012-05

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 30

Inclusion Criteria

• cataract candidates
• preoperative corneal regular astigmatism >0.75D
• Willing and able to complete all required postoperative visits
• Able to comprehend and sign a statement of informed consent

Exclusion Criteria

• significant intraocular lenses tilt or decentration
• corneal scarring
• Irregular corneal astigmatism
• other ocular diseases
• surgical complication

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Primary Outcome Measures

Name	Time	Method
Pentacam-derived corneal astigmatism	3month postoperatively
refraction	3month postoperatively

Trial Locations

Locations (1)

Eye hospital of China Medical Univerisity; 🇨🇳 Shenyang, Liaoning, China