Table 3 Diagnostic efficiency of eight morphological parameters of the central anterior chamber section for NACA using the training dataset of Dataset-1

From: Intelligent screening of narrow anterior chamber angle based on portable slit lamp

Light band	Total	Success	Parameter	Unit	Accuracy	Sensitivity	Specificity	F1	AUC	LowerB	UpperB	Cutoff
Horizontal and upper	727 (eyes)	692 (95.19%)	I	Pixel	0.85	0.82	0.87	0.80	0.90	0.87	0.93	158,306.50
			II	Pixel	0.84	0.82	0.85	0.78	0.89	0.86	0.91	198,516.00
			III	Ratio	0.77	0.84	0.72	0.72	0.85	0.83	0.88	0.12
			IV	Pixel	0.82	0.83	0.82	0.77	0.89	0.86	0.91	30,398.00
			V	Pixel	0.83	0.82	0.84	0.78	0.89	0.86	0.91	138,304.00
			VI	Degree	0.82	0.74	0.86	0.74	0.88	0.85	0.90	13.00
			VII	Ratio	0.75	0.65	0.81	0.65	0.78	0.75	0.82	1.09
			VIII	Pixel	0.75	0.73	0.76	0.67	0.80	0.76	0.84	137.77
Horizontal and lower	700 (eyes)	679 (97.00%)	I	Pixel	0.83	0.86	0.82	0.78	0.90	0.88	0.93	178,097.50
			II	Pixel	0.83	0.86	0.82	0.78	0.90	0.87	0.92	218,396.00
			III	Ratio	0.82	0.74	0.86	0.74	0.86	0.83	0.89	0.12
			IV	Pixel	0.84	0.82	0.85	0.78	0.89	0.86	0.92	32,423.00
			V	Pixel	0.84	0.82	0.84	0.78	0.90	0.87	0.92	149,815.00
			VI	Degree	0.77	0.82	0.74	0.71	0.85	0.81	0.88	15.00
			VII	Ratio	0.74	0.68	0.77	0.65	0.78	0.74	0.82	1.10
			VIII	Pixel	0.76	0.78	0.74	0.69	0.80	0.77	0.84	157.87
Vertical and nasal	475 (eyes)	376 (79.16%)	I	Pixel	0.77	0.78	0.77	0.69	0.85	0.81	0.89	147,474.50
			II	Pixel	0.80	0.76	0.81	0.71	0.86	0.82	0.90	183,856.50
			III	Ratio	0.74	0.86	0.68	0.67	0.83	0.78	0.87	0.12
			IV	Pixel	0.82	0.76	0.85	0.73	0.87	0.83	0.91	28,302.00
			V	Pixel	0.77	0.79	0.76	0.69	0.85	0.81	0.89	131,064.50
			VI	Degree	0.77	0.65	0.82	0.64	0.82	0.77	0.86	19.00
			VII	Ratio	0.68	0.76	0.64	0.60	0.76	0.71	0.81	1.13
			VIII	Pixel	0.76	0.69	0.80	0.65	0.80	0.75	0.85	147.76
Vertical and temporal	509 (eyes)	427 (83.89%)	I	Pixel	0.84	0.80	0.86	0.78	0.88	0.84	0.91	141,041.00
			II	Pixel	0.83	0.82	0.84	0.77	0.88	0.85	0.92	185,578.00
			III	Ratio	0.81	0.82	0.81	0.75	0.86	0.82	0.90	0.11
			IV	Pixel	0.85	0.78	0.88	0.78	0.89	0.86	0.92	28,133.00
			V	Pixel	0.83	0.79	0.85	0.76	0.88	0.84	0.91	124,979.00
			VI	Degree	0.79	0.64	0.87	0.68	0.82	0.78	0.86	17.00
			VII	Ratio	0.75	0.70	0.78	0.66	0.79	0.75	0.84	1.11
			VIII	Pixel	0.80	0.73	0.84	0.72	0.85	0.81	0.89	143.71

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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Table 3 Diagnostic efficiency of eight morphological parameters of the central anterior chamber section for NACA using the training dataset of Dataset-1

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