Effect of Posterior Corneal Toricity on Refractive Outcome of Pseudophakia

• Sponsor: China Medical University, China (Other)
• Overall Status: Unknown status
• CT.gov ID: NCT01554761
• Collaborator: (none)
• Enrollment: 30
• Location: 1

Study Details

Study Description

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.

Condition or Disease	Intervention/Treatment	Phase
Astigmatism; Cataract	Procedure: phacoemulsification; Device: Pentacam (Oculus,Germany)examination	Phase 4

Study Design

• Study Type: Interventional
• Anticipated Enrollment: 30 participants
• Allocation: N/A
• Intervention Model: Single Group Assignment
• Masking: None (Open Label)
• Primary Purpose: Treatment
• Official Title: Effect of Posterior Corneal Toricity on Refractive Outcome of Pseudophakia
• Study Start Date: Feb 1, 2012
• Anticipated Primary Completion Date: May 1, 2012

Outcome Measures

Primary Outcome Measures

1. Pentacam-derived corneal astigmatism [3month postoperatively]

2. refraction [3month postoperatively]

Eligibility Criteria

Criteria

• Ages Eligible for Study: 18 Years to 80 Years
• Sexes Eligible for Study: All
• Accepts Healthy Volunteers: No

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

Contacts and Locations

Locations

	Site	City	State	Country	Postal Code
1	Eye hospital of China Medical Univerisity	Shenyang	Liaoning	China	110005

Sponsors and Collaborators

• China Medical University, China

Investigators

• Principal Investigator: Jinsong Zhang, MD, Eye Hospital of China Medical University

Study Documents (Full-Text)

None provided.

More Information

Publications

None provided.

• Responsible Party: Jinsong Zhang, MD,the President of Eye hosptial of China Medical Univerisity,China, China Medical University, China
• ClinicalTrials.gov Identifier: NCT01554761
• Other Study ID Numbers: 2
• First Posted: Mar 15, 2012
• Last Update Posted: Mar 15, 2012
• Last Verified: Mar 1, 2012

• Keywords provided by Jinsong Zhang, MD,the President of Eye hosptial of China Medical Univerisity,China, China Medical University, China: astigmatism; pseudophakia
• Additional relevant MeSH terms: Cataract; Astigmatism; Pseudophakia

Study Results

No Results Posted as of Mar 15, 2012