Keywords: کراتوکونژکتیویت اپیدمی; AdV; Adenovirus; CI; confidence interval; EKC; epidemic keratoconjunctivitis; ETDRS; Early Treatment Diabetic Retinopathy Study; HR; hazard ratio; PCR; polymerase chain reaction; SD; standard deviation; SEI; subepithelial infiltrate; VA; visual acuity; WG