Assessment of Corneal Biomechanics With the Corvis ST in Different Age of Myopia With Orthokeratology

NCT ID: NCT05635526

Last Updated: 2022-12-02

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

134 participants

Study Classification

OBSERVATIONAL

Study Start Date

2020-06-01

Study Completion Date

2022-10-01

Brief Summary

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The present research focused on the effect of the age for the corneal biomechanics of low and moderate myopia patients after wearing orthokeratology (OK lens). According to age, the included cases were divided into 3 groups. Through the analysis of corneal biomechanical parameters, further learn the influence of OK lens on the patient cornea. It would help ophthalmologist and optometrist find out the potential issue and reach a better control result.

Detailed Description

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The present research focused on the effect of the age for the corneal biomechanics of low and moderate myopia patients after wearing orthokeratology (OK lens). According to age, the included cases were divided into 3 groups: Ⅰ (8-12 years old), Ⅱ (13-16 years old), Ⅲ (over 16 years old). The OK lenses used in the present study are of the same design (Euclid Systems Orthokeratology; Euclid System, Herndon, VA, USA). The base line (Day 0) and different follow-up time point (Day 1, Week 1, Week 2, Month 1, Month 3, and Month 6) of dynamic corneal response (DCR) (including 19 items) of the patients derived by Corvis ST were collected. The difference between before and after wearing OK Lens and the changes of parameters among the three groups were both analyzed. And the correlation between axis length (AL) and the 19 parameters also was analyzed. Through the analysis of corneal biomechanical parameters, further learn the influence of OK lens on the patient cornea. It would help ophthalmologist and optometrist find out the potential issue and reach a better control result.

Conditions

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Myopia Orthokeratology

Study Design

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Observational Model Type

OTHER

Study Time Perspective

RETROSPECTIVE

Study Groups

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1

8-12 years old

No interventions assigned to this group

2

13-16 years old

No interventions assigned to this group

3

over 16 years old

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

* age from 8 to 40 years old
* spherical equivalent(SE) was range from -1.00D to -5.00D
* conform to the standard of wearing orthokeratology lens

Exclusion Criteria

* ocular diseases and systemic diseases
* visual acuity was less than 20/20
* unable to follow visitors on time
Minimum Eligible Age

8 Years

Maximum Eligible Age

40 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Tianjin Eye Hospital

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Tiajin Eye Hospital

Tianjin, Tianjin Municipality, China

Site Status

Countries

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China

Other Identifiers

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2022049

Identifier Type: -

Identifier Source: org_study_id

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