Fig. 2
From: Obesity negatively impacts corneal nerves in patients with diabetes mellitus
Subgroup analysis of corneal nerve parameters across different body mass index (BMI) categories. Bar charts showing the comparisons of corneal nerve parameters across various BMI categories: (a) corneal nerve fiber density (CNFD, number of fibers/mm2), (b) corneal nerve fiber length (CNFL, total length of fibers mm/mm2), (c) corneal nerve branch density (CNBD, number of branch points on main fibers/mm2), (d) corneal nerve fiber area (CNFA, total nerve fiber area mm2/mm2), and (e) corneal nerve fractal dimension (CFracDim). The y-axis represents the mean values of each corneal nerve parameter, while the x-axis are the different BMI (kg/m2) categories: (1) underweight: BMI < 18.5, (2) normal: 18.5 ≤ BMI < 25, (3) overweight: 25 ≤ BMI < 30, (4) class I obesity: 30 ≤ BMI < 35, (5) class II obesity: 35 ≤ BMI < 40, and (6) class III obesity: BMI > 40. *, P < 0.05, **, P < 0.005, ***, P < 0.0001