Fig. 4From: Artificial neural network to guide intracorneal ring segments implantation for keratoconus treatment: a pilot studyChanges in the quality of retinal image after ICRS implantation according to the ANN’s suggestion. a Preoperative Point Spread Function (PSF) and quality of the retinal image. b Postoperative PSF and quality of the retinal image, with an increase of the PSF and a significant improvement of the quality of the retinal imageBack to article page