Fourier Transform of Videokeratography Data: Clinical Usefulness in Moderate and Frome Fruste Keratoconus

NCT ID: NCT02617368

Last Updated: 2015-12-01

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

185 participants

Study Classification

OBSERVATIONAL

Study Start Date

2014-11-30

Study Completion Date

2015-11-30

Brief Summary

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Primary objective of this study was evaluate the diagnostic capacity of fourier analysis of keratometric data in differentiating moderate KC and FFK from healthy corneas.

Study participants were recruited from the Cornea Outpatient service in a consecutive if eligible basis. Two study groups were formed: a)KC group included patients those were diagnosed and classified for moderate keratoconus according to the Amsler-Krumeich classification system, b) FFK group (FFKG) that included patients diagnosed with FFK, and c) Control group (CG) was formed by refractive surgery candidates. Pentacam (Pentacam HR, Oculus Optikgerate GmbH, Heidelberg, Germany)measurements were performed by the same experienced operator in a consistent way.

Detailed Description

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Conditions

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Keratoconus

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

PROSPECTIVE

Study Groups

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KC group

KC group included patients those were diagnosed and classified for moderate keratoconus according to the Amsler-Krumeich classification system

No interventions assigned to this group

Forme Fruste Keratoconus Group (FFKG)

Forme Fruste Keratoconus Group (FFKG) included patients diagnosed with FFK.

No interventions assigned to this group

Control Group (CG)

Control group(CG) was formed by refractive surgery candidates.

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

* diagnosis of keratoconus KC in the fellow eye according to the Amsler-Krumleich criteria (FFKG)
* KISA index between 60 and 100% in the FFK eye (FFKG)
* lack of any KC-related findings / signs in the slit-lamp biomicroscopy (FFKG)
* uneventful ophthalmologic history (CG)
* no indications of corneal pathology in slit-lamp biomicroscopy and Placido \*disk-based videokeratography (CG)
* KISA index value less than 60% (CG)
* diagnosed and classified for moderate keratoconus according to the Amsler-Krumeich classification system (KCG)

Exclusion Criteria

* for all study groups:

* previous incisional eye surgery
* corneal scars and opacities
* history of herpetic keratitis, severe eye dryness
* pregnancy or nursing
* current corneal infection
* glaucoma
* suspicion for glaucoma
* IOP lowering treatment
* underlying autoimmune disease
Minimum Eligible Age

8 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Democritus University of Thrace

OTHER

Sponsor Role lead

Responsible Party

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Georgios Labiris

Ass. Professor in Ophthalmology

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Eye Institute Of Thrace

Alexandroupoli, Evros, Greece

Site Status

Countries

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Greece

Other Identifiers

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304/23/11/2015

Identifier Type: -

Identifier Source: org_study_id