Fig. 4

The aspect ratio and the square ratio at the periphery 40° and 80° obtained with Optos® 200Tx and Optos® California.a. The aspect ratio at the periphery 40° of Optos® California are settled in smaller amplitude of values than that of Optos® 200Tx (0.11 vs 0.22). b. The aspect ratio at the periphery 80° of Optos® California are settled in smaller amplitude of values than that of Optos® 200Tx (0.44 vs 0.70). c. The square ratio of Optos® California at the periphery 40° relative to the center of the posterior pole are settled in smaller amplitude of values than that of Optos® 200Tx (0.12 vs 0.31). d. The square ratio of Optos® California at the periphery 80° relative to the center of the posterior pole are settled in smaller amplitude of values than that of Optos® 200Tx (0.34 vs 2.15)