Evaluating App-Based Vision Testing (WHOeyes) Combined with the Questionnaire As a Substitute for One-Week Postoperative In-Clinic Follow-Up in Age-Related Cataract Patients: a Multi-center Randomized Controlled Trial

The WHOeyes app (a self-administered visual acuity testing app) plus a questionnaire (to ask the patients to go to the hospital if they ever experience ocular discomfort including eye redness, discharge, etc.) will be used for 1-week follow-up after cataract surgery, and only those with significant vision loss based on WHOeye test or with ocular discomfort are advised to return to the hospital for follow-up.