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Measurement of High Order Aberrations in Late Stages Keratoconus

NCT01295164 · Status: TERMINATED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 28

Last updated 2017-03-03

No results posted yet for this study

Summary

The instrument that will be used in the study is the Murcia monocular Adaptive Optics Visual simulator (AOVIS-I). The system provides an objective characterization of the optical quality of the patient's eye by application of wave-front sensing technology. The optical condition of every eye is represented by its wave aberration. This characterization overcomes the current description based only in refractive errors. This provides an accurate description of the optics of the eye based on the assessment of the whole set of ocular aberrations. The particular wave-front sensor is of a Hartmann-Shack type. One characteristics of this wave-front sensor is its high dynamic range allowing measuring highly aberrated eyes, such as patients with keratoconus.

Conditions

  • Keratoconus

Interventions

DEVICE

classic aberrometer and aberrometer AOVIS-1

Measurement of aberrations in early stages (1 and 2) of keratoconus as compared aberrometer AOVIS-1 with a "classic aberrometer".

DEVICE

Aberrometer AOVIS-I

Measurement of aberrations in high stages (3 and 4) of keratoconus. Objective characterization of the optical quality of the patient eye by application of wave-front sensing technology in late stage keratoconus The complete procedure in one patient takes less than 5 minutes in only one consultation and is completely non invasive. The optical measurements only involve the use of low power infrared laser

Sponsors & Collaborators

  • University Hospital, Toulouse

    lead OTHER

Principal Investigators

  • Francois Malecaze, MD · University Hospital, Toulouse

Study Design

Allocation
NON_RANDOMIZED
Purpose
DIAGNOSTIC
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2011-10-31
Primary Completion
2012-11-30
Completion
2012-11-30

Countries

  • France

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01295164 on ClinicalTrials.gov