The monitoring of the effects of retinopathy on the visual system can be assisted by analyzing the vascular architecture of the retina‎.‎ This book presents methods based on Gabor filters to detect blood vessels in fundus images of the retina‎.‎ Forty images of the retina from the Digital Retinal Images for Vessel Extraction ‎(‎DRIVE‎)‎ database were used to evaluate the performance of the methods‎.‎ The results demonstrate high efficiency in the detection of blood vessels with an area under the receiver operating characteristic curve of 0.96‎.‎ Monitoring the openness of the major temporal arcade ‎(‎MTA‎)‎ could facilitate improved diagnosis and optimized treatment of retinopathy‎.‎ This book presents methods for the detection and modeling of the MTA‎,‎ including the generalized Hough transform to detect parabolic forms‎.‎ Results obtained with 40 images of the DRIVE database‎,‎ compared with hand‎-drawn traces of the MTA‎,‎ indicate a mean distance to the closest point of about 0.24mm‎.‎ This book illustrates applications of the methods mentioned above f‎.‎‎.‎‎.‎