Fig. 2From: Impact of photoreceptor density in a 3D simulation of panretinal laser photocoagulationThe PRP-free area. The anatomical dimensions of a standard eyeball taken from a textbook [23]. The PRP-free area was set as a circle with a radius of 5 mm (broken line). The PRP-free area is equal to the area of a circle with a 5.14-mm radius calculated using the formula presented above in Fig. 1aBack to article page