Anterior Capsule Polishing Effect on Effective Lens Position

Shandong University20 enrolled

Overview

* 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.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

SUPPORTIVE_CARE

Masking

DOUBLE

Enrollment

Conditions

Cataract

Interventions

Eligibility

Sex: ALL

Medical Language ↔ Plain English

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

Outcomes

Primary Outcomes

Effective Lens Position

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.

Time frame: 1 day，1 week, 1 month，3 months and 6 months postoperatively

Secondary Outcomes

Uncorrected Visual Acuity(UCVA)

The UCVA was recorded in logMAR units at each vist

Time frame: 1 day，1 week, 1 month as well as 3 months and 6 months postoperatively

Refractive Error

auto refraction was performed at each visit. Spherical equivalent refraction (SER) (sphere +cylinder/2) was used in subsequent calculations.