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Surgically Induced Astigmatism of Temporal Versus Nasal Clear Corneal Phacoemulsification

NCT ID: NCT00521833

Last Updated: 2007-09-05

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

20 participants

Study Classification

INTERVENTIONAL

Study Start Date

2005-06-30

Study Completion Date

2006-08-31

Brief Summary

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To compare the short-term astigmatic outcomes of phacoemulsification cataract surgery and intraocular lens implantation using temporal versus nasal clear corneal incisions.

Detailed Description

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In a clinical trial, consecutive eyes with senile cataract underwent phacoemulsification with implantation of a 6.0 mm foldable hydrophobic acrylic intraocular lens through a 3.2 mm horizontal clear cornea incision at 180 degrees (temporal incision in right eyes, nasal incision in left eyes). Keratometric astigmatism was measured preoperatively and one and four weeks and 6 months after surgery. Surgically induced astigmatism (SIA) was calculated by the vector analysis method using the Holladay-Cravy-Koch formula. Patients with history of diabetes mellitus, connective tissue disorders, steroid use, previous ocular surgery, with the rule astigmatism \>1D, pseudoexfoliation and any corneal pathology were excluded.

Conditions

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Surrgical Induced Astigmatism

Study Design

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Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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1

Temporal (right eye)

Group Type EXPERIMENTAL

phacoemulsification and intraocular lens implantation

Intervention Type PROCEDURE

clear cornea phacoemulsification and intraocular lens implantation using temporal or nasal incisions respectively

2

Nasal (Left eye)

Group Type EXPERIMENTAL

phacoemulsification and intraocular lens implantation

Intervention Type PROCEDURE

clear cornea phacoemulsification and intraocular lens implantation using temporal or nasal incisions respectively

Interventions

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phacoemulsification and intraocular lens implantation

clear cornea phacoemulsification and intraocular lens implantation using temporal or nasal incisions respectively

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* All the patients with senile cataract

Exclusion Criteria

* Previously operated eyes
* Presence of corneal pathology
* Pseudo exfoliation
* With-the-rule (WTR) astigmatism \>1 D
* Presence of diabetes mellitus
* History of connective tissue disease
* Consumption of systemic steroids
Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Shahid Beheshti University of Medical Sciences

OTHER

Sponsor Role lead

Principal Investigators

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Mohammad Pakravan, MD

Role: PRINCIPAL_INVESTIGATOR

Shahid Beheshti University of Medical Sciences

Locations

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Ophthalmic research center

Tehran, Tehran Province, Iran

Site Status

Countries

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Iran

Other Identifiers

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8380

Identifier Type: -

Identifier Source: org_study_id