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Comparison of Three Corneal Horizontal Marking Techniques Using iTrace™

NCT ID: NCT01972191

Last Updated: 2013-10-30

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

Total Enrollment

156 participants

Study Classification

OBSERVATIONAL

Study Start Date

2012-10-31

Study Completion Date

2013-08-31

Brief Summary

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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™.

Detailed Description

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Conditions

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Corneal Horizontal Marking.

Keywords

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Toric marking, Corneal horizontal marking

Study Design

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Observational Model Type

COHORT

Study Time Perspective

RETROSPECTIVE

Study Groups

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Group 1

Group 1 : Bare eye marking group

No interventions assigned to this group

Group 2

Group 2 : Pendulum attached marker group

No interventions assigned to this group

Group 3

Group 3 : Horizontal slit beam assisted marker group

No interventions assigned to this group

Eligibility Criteria

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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
Minimum Eligible Age

50 Years

Maximum Eligible Age

86 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Yonsei University

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine

Seoul, , South Korea

Site Status

Countries

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South Korea

References

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Hoffer KJ. Biometry of 7,500 cataractous eyes. Am J Ophthalmol. 1980 Sep;90(3):360-8. doi: 10.1016/s0002-9394(14)74917-7. No abstract available.

Reference Type BACKGROUND
PMID: 7425052 (View on PubMed)

Cha D, Kang SY, Kim SH, Song JS, Kim HM. New axis-marking method for a toric intraocular lens: mapping method. J Refract Surg. 2011 May;27(5):375-9. doi: 10.3928/1081597X-20101005-01. Epub 2010 Oct 15.

Reference Type BACKGROUND
PMID: 20954592 (View on PubMed)

Other Identifiers

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1-2013-0049

Identifier Type: -

Identifier Source: org_study_id