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Table 1 Physical, ultrasonographic (US) and micro-CT (μCT) measurements of five species of snakes

From: Ultrasound imaging of the anterior section of the eye of five different snake species

Species Ball python Burmese python Children’s python Amazon tree boa Malagasy ground boa
Parameter (US) (US) (μCT) (US) (US) (US)
n = 6 6 1 1 4 2
Body length (cm) 114.8 ± 6.0 CI95 (110.0;119.5) 102.9 ± 3.8 CI95 (99.9;105.9) 100.3 90.5 54.6 ± 18.8 CI95 (39.5;69.6) 80.5 ± 5.0 CI95 (76.5;84.5)
Body weight (g) 1309.5 ± 196.4 CI95 (1152.4;1466.7) 513.0 ± 58.1 CI95 (466.5;559.6) 491.6 318.8 45.9 ± 11.4 CI95 (36.8;55.1) 449.2 ± 57.8 CI95 (403.0;495.5)
Spectacle diameter (mm) 5.8 ± 0.5 CI95 (5.4;6.2) 5.1 ± 0.2 CI95 (4.9;5.3) 5.1 3.4 3.8 ± 0.3 CI95 (3.6;4.0) 4.9 ± 0.3 CI95 (4.7;5.1)
Central spectacle thickness (μm) 111.3 ± 3.4 CI95 (108.6;114.1) 110.1 ± 9.3 CI95 (102.6;117.5) 114.4 95.0 76.6 ± 7.9 CI95 (70.3;82.9) 94.5 ± 1.4 CI95 (93.4;95.6)
Depth of sub-spectacular space (μm) 57.3 ± 30.7 CI95 (32.8;81.9) 49.7 ± 26.2 CI95 (28.7;70.6) 65.2 26.5 23.4 ± 10.3 CI95 (15.1;31.6) 19.5 ± 5.7 CI95 (15.0;24.0)
Central corneal thickness (μm) 228.4 ± 22.2 CI95 (210.7;246.1) 237.3 ± 16.9 CI95 (223.7;250.8) 224.1 194.5 186.1 ± 3.0 CI95 (183.8;188.5) 210.5 ± 1.4 CI95 (209.4;211.6)
  1. Values are mean ± standard deviation and 95% confidence interval (CI95).