Myopia, Orthokeratology
Conditions
Keywords
Myopia prevention and control, Orthokeratology, Dynamic corneal response
Brief summary
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
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.
Interventions
None listed
Sponsors
Tianjin Eye Hospital
Study design
Observational model
OTHER
Time perspective
RETROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
8 Years to 40 Years
Healthy volunteers
No
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
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| The change of dynamic corneal response (DCR) | The change of baseline and 1 day, 1 week, 2 weeks, 1 month, 3 months, and 6 months | The axial length was measured by Corvis ST |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| The change of axial length | The change of baseline and 6 months | The axial length was measured by AL-scan |
Countries
China
Outcome results
None listed