Efficacy of Visual and Perceptual Training on Visual Function for Operative Congenital Ectopia Lentis Children

Inclusion Criteria 1. Aged 4-12 years, with no gender restriction; 2. Diagnosed with congenital ectopia lentis; 3. Underwent bilateral lensectomy combined with IOL scleral fixation, and within 1 month ± 1 week after the second-eye surgery; 4. Best-corrected visual acuity (BCVA) of unilateral or bilateral eyes is no worse than 20/200 but below the normal level for the corresponding age: for 4-year-old children, BCVA ≤ 20/40; for children aged 5 years and above, BCVA ≤ 20/30; 5. Written informed consent signed by the patient and their parents or legal guardians. Exclusion Criteria 1. History of ocular trauma or previous ocular surgery other than the study-related procedure; 2. Unable to cooperate with treatment, examinations, and follow-up assessments; 3. Complicated with recurrent lens dislocation, severe cataract (dense, axial, opacity diameter \>3 mm and affecting central vision), secondary glaucoma, corneal endothelial decompensation, retinal detachment, or other conditions requiring urgent surgical intervention; 4. Presence of diplopia in either eye; 5. Known history of neurological disorders (e.g., photosensitive epilepsy); 6. Participation in other clinical trials within the postoperative period that may affect the outcomes of the present study; 7. Use of topical or systemic medications that may cause visual impairment, or other vision therapies other than refractive correction in the past 3 months (e.g., atropine penalization, occlusion therapy, digital therapy, Bangerter filters, optical suppression, VR training, etc.).