The specific diseases or symptoms encompassed in the research primarily pertain to myopia among adolescents and children. Myopia is a common refractive disorder of the eye, manifested as the focusing of parallel light rays in front of the retina when the eye is in a relaxed accommodative state, leading to indistinct vision of distant objects while near objects are relatively clear. In this study,
Conditions
Interventions
BC5.0mm:Orthokeratology with different base arc designs
A 5.8mm orthokeratoscope with a base arc design:A 6.0mm orthokeratoscope with a base arc design
Sponsors
Hangzhou Xihu Zhijiang Eye Hospital
Eligibility
Sex/Gender
All
Age
8 Years to 13 Years
Inclusion criteria
Inclusion criteria: 1.The age range is between 8 and 13 years old; 2.Myopia degree in both eyes ranged from -1.00D to -4.00D, with astigmatism less than 1.75D; 3.Initial fitting of orthokeratology lenses.
Exclusion criteria
Exclusion criteria: 1.The use of low-concentration atropine or other drugs affecting pupil size within three months; 2.A history of ophthalmic surgery; Ocular conditions impacting vision and refractive changes, such as cataracts or glaucoma; 3.Systemic diseases potentially affecting vision and refraction, such as diabetes mellitus; 4.Poor compliance, inability to adhere to scheduled follow-ups, or failure to cooperate during examinations.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Subjective Visual Quality Assessment Score;Whole-eye higher-order aberrations (HOA), including spherical aberrations (SA), coma, and trefoil aberrations; | — |
Secondary
| Measure | Time frame |
|---|---|
| The Influence of Axial Length and Corneal Topographic Shape on Control Effectiveness;Occurrences of eye pain, redness, vision impairment, and corneal epithelial injury were documented; | — |
Countries
China
Contacts
Public ContactYan Liu
Hangzhou Xihu Zhijiang Eye Hospital
Outcome results
None listed