In presbyopia, a decline in accommodative function can lead to a series of associated symptoms, such as reduced contrast sensitivity, which subsequently results in visual discomfort and difficulty with near tasks.
Conditions
Interventions
trail group:Glasses-Free 3D Training
control group:2D video with identical content
Sponsors
The Zhongshan Ophthalmic Center,Sun Yat-sen University
Eligibility
Sex/Gender
All
Age
40 Years to 60 Years
Inclusion criteria
Inclusion criteria: 1.Refractive errors: -6.0D to -5.0D, astigmatism <2.0D, anisometropia <4.0D; 2.Binocular corrected visual acuity < 0.2 LogMAR; 3.Stereopsis threshold <= 100 arcseconds. 4.Age 40~60 years old, gender is not limited; 5.Subjects can understand the purpose of this study and sign the informed consent;
Exclusion criteria
Exclusion criteria: 1.Use of any known medications affecting accommodative function or wearing orthokeratology lenses within the past month. 2.Presence of severe systemic or psychiatric disorders. 3.Other conditions in which the investigator, for safety reasons or in the best interest of the participant, deems the subject unfit to participate in the study. 4.Post-lens replacement surgery; cataract patients with impaired vision, or individuals with other ocular diseases that result in the absence of simultaneous vision.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Amplitude of Accommodation; | — |
Secondary
| Measure | Time frame |
|---|---|
| Other binocular visual functions; | — |
Countries
China
Contacts
Public ContactZhuoyehong
The Zhongshan Ophthalmic Center,Sun Yat-sen University
Outcome results
None listed