presbyopia
Conditions
Interventions
NBV group:no
BVA group:no
Sponsors
Department of Ophthalmology, Affiliated Hospital of North Sichuan Medical College
Eligibility
Sex/Gender
All
Age
50 Years to 85 Years
Inclusion criteria
Inclusion criteria: 1. At least 50 years old; 2. There is no limitation on gender; 3. The best corrected visual acuity in one eye is not less than 0.6; 4. Willing to participate in the study and sign the informed consent.
Exclusion criteria
Exclusion criteria: 1. Any organic disease of the eye that affects vision; 2. Current or past amblyopia, strabismus, including constant and intermittent strabismus; 3. Previous history of intraocular surgery or refractive surgery; 4. Previous history of extraocular muscle surgery or trauma.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Vision examination, binocular vision function examination including accommodation and vergence, CISS questionnaire;Diopter;Stereoscopic vision;Far/Near Latency;Regulatory convergence/accommodation (AC/A) ratio;Fusion scope;Adjustment range;Adjustment sensitivity inspection;ISS questionnaire; | — |
Countries
China
Contacts
Public ContactQing-Qing Tan
Department of Ophthalmology, Affiliated Hospital of North Sichuan Medical College
Outcome results
None listed