presbyopia
Conditions
Interventions
Tset group 1:First, wear multifocal soft glasses. After all examinations are completed, take a 10 minute break and wear regular frame glasses to complete the test.
Tset group 2:First, wear regular frame glasses. After all examinations are completed, take a 10 minute break and wear multifocal soft glasses to complete the test.
Sponsors
Eye Hospital of Wenzhou Medical University
Eligibility
Sex/Gender
All
Age
40 Years to 55 Years
Inclusion criteria
Inclusion criteria: 1. Age: 40-55 years old; 2. Refractive error: Equivalent spherical lens -7.50~0.00D, astigmatism = 0.8; 4. Tear film rupture time >= 5s; 5. Those who are willing to try wearing contact lense.
Exclusion criteria
Exclusion criteria: 1. There are contraindications for wearing contact lenses; 2. Have a history of refractive surgery and eye surgery; 3. Accompanied by any organic eye diseases (such as cataracts, glaucoma, amblyopia, etc.); 4. Poor general health (such as heart disease, respiratory system disease, hypertension, diabetes, etc.); 5. Cognitive impairment, mental system disorders, and inability to cooperate with examinations.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| visual acuity;accommodative facility/fusional vergence facility;subjective accommodation amplitude;positive/negative relative accommodation;accommodative response;pupil size;visual function at Intermediate distance ;defocus curve;aberration;tear analysis; | — |
Secondary
| Measure | Time frame |
|---|---|
| visual acuity;accommodative facility/fusional vergence facility;subjective accommodation amplitude;positive/negative relative accommodation;accommodative response;pupil size;visual function at Intermediate distance ;defocus curve;aberration;subjective questionnaire scores ; | — |
Countries
China
Contacts
Public ContactJinhua Bao
Eye Hospital of Wenzhou Medical University
Outcome results
None listed