Comparison of Three Corneal Horizontal Marking Techniques Using iTrace™

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT01972191

Enrollment

156

Registered

2013-10-30

Start date

2012-10-31

Completion date

2013-08-31

Last updated

2013-10-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Corneal Horizontal Marking.

Keywords

Toric marking, Corneal horizontal marking

Brief summary

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™.

Interventions

None listed

Study design

Observational model

COHORT

Time perspective

RETROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

50 Years to 86 Years

Healthy volunteers

Yes

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

Design outcomes

Primary

Measure	Time frame	Description
The vertical height deviation and rotational axis misalignment amount of each three marking techniques, evaluated by iTrace surgical workstation.	Within 10 minutes after corneal horizontal marking.	Nasal and temporal marked spots saved in iTrace surgical workstation program.

Countries

South Korea

Outcome results