“…The degree of the channel was determined using nomograms of specific ICRS used or was a 360-degree15,16,26,32,34,36,39,96 tunnel for inserting the segments. Five ICRS were used: Keraring (Mediphacos, Belo Horizonte, Brazil) ( references 8, 16, 27, 28, 31, 32, 36, 41, 42, 47, 54, 55, 58–61, 64, 66, 67, 69, 70, 77, 80, 88, 92, 93, 97–99, 102, 103, 107, 110, 112, 116 ), Ferrara ring (Ferrara Ophthalmics, Belo Horizonte, Brazil) ( references 14, 30, 35, 43, 62, 63, 76, 78, 81, 82, 84, 85, 89, 91, 94, 101, 104 ), Intacs (Addition Technology, Inc., Des Plaines, IL) ( references 16, 26, 33, 37, 39, 40,…”