Table 4 Diagnostic efficiency of eight morphological parameters of the central anterior chamber section for NACA using the test dataset of Dataset-1

Light band	Total	Success	Parameter	Unit	Accuracy	Sensitivity	Specificity	F1
Horizontal and upper	79 (eyes)	77 (97.47%)	I	Pixel	0.86	0.90	0.84	0.78
			II	Pixel	0.86	0.90	0.84	0.78
			III	Ratio	0.70	0.95	0.61	0.63
			IV	Pixel	0.86	0.90	0.84	0.78
			V	Pixel	0.87	0.95	0.84	0.80
			VI	Degree	0.83	0.62	0.91	0.67
			VII	Ratio	0.73	0.57	0.79	0.53
			VIII	Pixel	0.77	0.86	0.73	0.67
Horizontal and lower	78 (eyes)	77 (98.72%)	I	Pixel	0.82	0.86	0.80	0.77
			II	Pixel	0.82	0.82	0.82	0.77
			III	Ratio	0.81	0.71	0.86	0.73
			IV	Pixel	0.82	0.75	0.86	0.75
			V	Pixel	0.82	0.79	0.84	0.76
			VI	Degree	0.82	0.82	0.82	0.77
			VII	Ratio	0.73	0.50	0.86	0.57
			VIII	Pixel	0.73	0.61	0.80	0.62
Vertical and nasal	52 (eyes)	43 (82.69%)	I	Pixel	0.79	0.68	0.88	0.74
			II	Pixel	0.84	0.68	0.96	0.79
			III	Ratio	0.77	0.84	0.71	0.76
			IV	Pixel	0.86	0.68	1.00	0.81
			V	Pixel	0.79	0.68	0.88	0.74
			VI	Degree	0.70	0.47	0.88	0.58
			VII	Ratio	0.79	0.79	0.79	0.77
			VIII	Pixel	0.77	0.63	0.88	0.71
Vertical and Temporal	47 (eyes)	34 (72.34%)	I	Pixel	0.88	0.73	1.00	0.85
			II	Pixel	0.85	0.73	0.95	0.81
			III	Ratio	0.82	0.87	0.79	0.81
			IV	Pixel	0.85	0.73	0.95	0.81
			V	Pixel	0.88	0.80	0.95	0.86
			VI	Degree	0.68	0.40	0.89	0.52
			VII	Ratio	0.65	0.47	0.79	0.54
			VIII	Pixel	0.74	0.53	0.89	0.64

Parameter I: closed area; Parameter II: central anterior chamber section area; Parameter III: ratio of central anterior chamber section area to limbus area; Parameter IV: anterior chamber angle area; Parameter V: central area of the central anterior chamber section; Parameter VI: anterior chamber angle; Parameter VII: ratio of lengths of the corneal band to iris band; Parameter VIII: difference in lengths between the corneal band and iris band.

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