Effect of Posterior Corneal Toricity on Refractive Outcome of Pseudophakia
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|ClinicalTrials.gov Identifier: NCT01554761|
Recruitment Status : Unknown
Verified March 2012 by Jinsong Zhang, China Medical University, China.
Recruitment status was: Recruiting
First Posted : March 15, 2012
Last Update Posted : March 15, 2012
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 Type :||Interventional (Clinical Trial)|
|Estimated Enrollment :||30 participants|
|Intervention Model:||Single Group Assignment|
|Masking:||None (Open Label)|
|Official Title:||Effect of Posterior Corneal Toricity on Refractive Outcome of Pseudophakia|
|Study Start Date :||February 2012|
|Estimated Primary Completion Date :||May 2012|
- 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.
- Pentacam-derived corneal astigmatism [ Time Frame: 3month postoperatively ]
- refraction [ Time Frame: 3month postoperatively ]
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01554761
|Contact: Qi Sun, MD||+86 email@example.com|
|Eye hospital of China Medical Univerisity||Recruiting|
|Shenyang, Liaoning, China, 110005|
|Contact: Jinsong Zhang, MD +86 13066667486|
|Sub-Investigator: Qi Sun, MD|
|Sub-Investigator: Cheng Peng, MD|
|Sub-Investigator: Jiangyue Zhao, MD|
|Sub-Investigator: Liwei Ma, MD.PhD|
|Principal Investigator:||Jinsong Zhang, MD||Eye Hospital of China Medical University|