Anterior Capsule Polishing Effect on Effective Lens Position

Not Applicable

Completed

• Conditions: Cataract
• Interventions: Procedure: anterior capsule polishing

• Registration Number: NCT01598428
• Lead Sponsor: Shandong University

Brief Summary

* The purpose of this study is to evaluate effects of anterior capsule polishing on effective lens position (ELP) and actual axial movement of the intraocular lens (IOL) by measuring anterior chamber depth (ACD)

* patients with bilateral age-related cataract undergo bilateral uneventful cataract surgeries with in-the- bag implantation of a single-piece hydrophobic acrylic foldable IOL (SN60WF). The anterior capsule was extensively polished using Whitman Shepherd Double-Ended Capsule Polisher in one eye randomly, and the other not. The ACD was measured 1day, 1 week, 1month, 3 months and 6 months with anterior segment Optical Coherence Tomograph (AS-OCT) postoperatively. The actual axial movement of IOL was defined as the root mean square (RMS) of the change in ELP at each visit.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2012-05-08
• Study First Submitted QC: 2012-05-14
• Study First Posted: 2012-05-15
• Study Start: 2013-01
• Primary Completion: 2014-01
• Study Completion: 2014-01
• Results First Submitted: 2014-06-17
• Status Verified: 2015-01
• Results First Submitted QC: 2015-01-14
• Last Update Submitted: 2015-01-14
• Results First Posted: 2015-01-26
• Last Update Posted: 2015-01-26

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 20

Inclusion Criteria

• bilateral age-related cataract
• good overall physical constitution
• uneventful surgeries of both eyes with in-the-bag IOL implantation

Exclusion Criteria

• history of intraocular surgery or laser therapy
• history of ocular trauma or ocular disease
• high myopia
• diabetes
• severe retinal pathology
• patients who could not return on time

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
cataract	anterior capsule polishing	-

Primary Outcome Measures

Name	Time	Method
Effective Lens Position	1 day，1 week, 1 month，3 months and 6 months postoperatively	Effective lens position was measured with anterior chamber depth 1 day，1 week, 1 month as well as 3 months and 6 months postoperatively using anterior segment Optical Coherence Tomograph. The anterior chamber depth defined as the distance between the posterior surface of the corneal and anterior surface of intraocular lens in the pupil center along the optical axis. The actual movement of intraocular lenses was defined as the root mean square of changes in the effective lens position at each visit.

Secondary Outcome Measures

Name	Time	Method
Uncorrected Visual Acuity(UCVA)	1 day，1 week, 1 month as well as 3 months and 6 months postoperatively	The UCVA was recorded in logMAR units at each vist
Refractive Error	1 day，1 week, 1 month as well as 3 months and 6 months postoperatively	auto refraction was performed at each visit. Spherical equivalent refraction (SER) (sphere +cylinder/2) was used in subsequent calculations.

Trial Locations

Locations (1)

Department of Ophtalmology,Qianfoshan Hospital,Shandong University; 🇨🇳 Jinan, Shandong, China