Study on the Recovery of Visual Perceptual Function Dysfunction in Patients With Diabetes

Inclusion Criteria

• •moderate to severe non-proliferative diabetic retinopathy (NPDR) and proliferative diabetic retinopathy(PDR) prior to treatment(17)
• •prior pan retinal laser photocoagulation (PRP) at least 4 weeks before enrollment or vitreoretinal surgery at least 8 weeks before enrollment
• •stable clinical condition
• •best-corrected visual acuity (BCVA) \> 1.0 logMAR (equivalent to a Snellen visual acuity of \< 20/200)
• •clear refractive media
• •age ≤ 65 years
• •ability to comprehend the examination and training procedures