Long Term Outcome of Intravitreal Ranibizumab for ROP

"Cycloplegic refraction and the average corneal radius of curvature were performed using a handheld auto kerato-refractometer (Righton Retinomax K-plus2). Refraction was confirmed by retinoscopy and refractive errors were calculated as spherical equivalent and astigmatism in cylinder.~The biometric optic components, including anterior chamber depth, lens thickness, and axial length, were measured using A-scan ultrasound (model Echoscan US-4000 / 500; Nidek)."