Analysis of Choroidal Vascularity Index in Keratoconus Patients Using Swept-Source Optical Coherence Tomography-Based Binarization Techniques

Table 5

Vascular coefficients in different keratoconus stages.

	Early KC (n = 37)	Moderate KC (n = 33)	Advanced KC (n = 27)	value
Age, years	34.1 (13.7)	33.5 (12.7)	36.0 (14.0)	0.76
Choroidal area (mm^2)	1.95 (0.57)	1.81 (0.62)	2.00 (0.53)	0.39
Stromal region (mm^2)	0.80 (0.25)	0.76 (0.24)	0.84 (0.21)	0.45
Vascular region (mm^2)	1.13 (0.34)	1.02 (0.40)	1.14 (0.33)	0.36
CCV (%)	57.62 (4.55)	55.43 (5.87)	56.63 (3.75)	0.43

Comparison of vascular coefficients across topographic KC stage as defined by the Pentacam HR software classification system (early KC: <2; moderate KC: 2 to <3; and advanced KC: ≥3) and age. Results represent mean (standard deviation). CCV: corrected choroidal percent of vascularity; KC: keratoconus.