Comparison of Three Corneal Horizontal Marking Techniques Using iTrace™

Yonsei University

Status: Completed

Conditions: Corneal Horizontal Marking.

Study type: Observational

Funder types: Other

Identifiers

NCT01972191

1-2013-0049

Details and patient eligibility

About

Before astigmatism reducing surgery, accurate corneal horizontal marking before surgery is important. Due to new corneal topographic method, iTrace™ surgical workstation, precise evaluation of corneal horizontal marking is available. In this study the investigators compared three known corneal horizontal making techniques and evaluate accuracy of each methods using iTrace™.

Enrollment: 156 patients

Sex: All

Ages: 50 to 86 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Patients who were scheduled to have cataract surgery
• Age between 50 to 85 years

Exclusion criteria

• With an underlying corneal or conjunctival disorder

Trial design

156 participants in 3 patient groups

Group 1

Description:

Group 1 : Bare eye marking group

Group 2

Description:

Group 2 : Pendulum attached marker group

Group 3

Description:

Group 3 : Horizontal slit beam assisted marker group