Preoperative calculation of angles of vision and working area in laparoscopic surgery to treat a giant hiatal hernia

Table 5 Angles of vision with the camera at 0º located 6 cm right or left from the midline

	D (cm)
X (cm)	2	3	4	5	6	7	8	9	10
10	64.99	66.87	68.66	70.36	71.99	73.53	75.00	76.40	77.73
11	62.47	64.29	66.03	67.69	69.29	70.82	72.27	73.67	75.00
12	60.26	62.01	63.69	65.31	66.87	68.37	69.81	71.19	72.51
13	58.30	59.98	61.61	63.18	64.70	66.16	67.57	68.93	70.24
14	56.57	58.18	59.74	61.26	62.74	64.16	65.54	66.87	68.16
15	55.02	56.57	58.07	59.54	60.96	62.35	63.69	64.99	66.25
16	53.63	55.11	56.57	57.98	59.36	60.70	62.01	63.27	64.51
17	52.38	53.81	55.20	56.57	57.90	59.20	60.47	61.70	62.91
18	51.25	52.62	53.96	55.28	56.57	57.82	59.05	60.26	61.43
19	50.22	51.54	52.83	54.10	55.35	56.57	57.76	58.93	60.07
20	49.29	50.56	51.80	53.03	54.23	55.41	56.57	57.70	58.81
21	48.43	49.65	50.85	52.04	53.20	54.34	55.46	56.57	57.65
22	47.65	48.82	49.98	51.12	52.25	53.36	54.44	55.51	56.57
23	46.93	48.06	49.18	50.28	51.37	52.44	53.50	54.54	55.56
24	46.26	47.35	48.43	49.50	50.56	51.60	52.62	53.63	54.62
25	45.64	46.70	47.74	48.78	49.80	50.81	51.80	52.78	53.75