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Corneal Biomechanics and Corneal Reshaping Therapy

Myopia Clinical Trial

Official title:
Corneal Stiffness and Tangent Modulus to Predict the Rate of Corneal Curvature Change in Corneal Reshaping Therapy

Clinical Trial Summary

The aim of the proposed study is to investigate the predictive value of corneal biomechanical properties in corneal reshaping therapy and the role of these parameters in determining the amount of myopia reduction.

Clinical Trial Description

Experiment 1: To evaluate changes in corneal biomechanics caused by short-term corneal reshaping therapy.

Subjects will wear a conventional RGP lens in one eye, randomly selected, and an orthokeratology lens in the fellow eye, for 30 minutes, 60 minutes and one night, respectively. Corneal stiffness and tangent modulus will be measured before and after each wearing period.

Experiment 2: To evaluate changes in and the recovery of corneal biomechanics effected by long-term corneal reshaping and to assess whether corneal biomechanics can predict the rate of corneal reshaping.

Subjects will wear orthokeratology lenses for 6 months. Regular follow up visits (1 week, 1 month, 3 months and 6 months) will be arranged to monitor the changes in corneal stiffness and tangent modulus. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT02719535
Study type Interventional
Source The Hong Kong Polytechnic University
Contact
Status Completed
Phase N/A
Start date January 2016
Completion date September 30, 2018
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