Association between Poor Ergophthalmologic Practices and Computer Vision Syndrome among University Administrative Staff in Ghana

Table 4

Ergonomic measurements of administrators.

Ergonomic parameters	Ergonomic practice	CVS case	Non-CVS case	Total	X	value
Viewing angle from eye to top of computer screen	Poor	70 (68.0)	51 (52.6)	121 (60.5)	4.947	0.026
	Good	33 (32.0)	46 (47.4)	79 (39.5)
	Total	103 (10)	97 (100)	200 (100)
Viewing angle from eye to center of computer screen	Poor	87 (84.5)	60 (61.9)	147 (73.5)	13.112	0.001
	Good	16 (15.5)	37 (38.1)	53 (26.5)
	Total	103 (100)	97 (100)	200 (100)
Viewing angle from eye to bottom of computer screen	Poor	51 (49.5)	40 (41.2)	91 (45.5)	1.380	0.240
	Good	52 (50.5)	57 (58.8)	109 (54.5)
	Total	103 (100)	97 (100)	200 (100)
Distance from horizontal to top of computer screen	Poor	103 (100	68 (70.1)	171 (85.5)	36.016	0.001
	Good	0 (0.0)	29 (29.9)	29 (14.5)
	Total	103 (100)	97 (100)	200 (100)
Distance from horizontal to bottom of computer	Poor	74 (71.8)	56 (57.7)	130 (65.0)	4.373	0.037
	Good	29 (28.2)	41 (42.3)	70 (70.5)
	Total	103 (100)	97 (100)	200 (100)
Distance from horizontal to center of computer screen	Poor	71 (68.9)	48 (49.5)	119 (59.5)	7.840	0.005
	Good	32 (31.1)	49 (50.5)	81 (40.5)
	Total	103 (100	97 (100)	200 (100)
Viewing distance from eye to home row of keyboard	Poor	79 (76.7)	58 (59.8)	137 (68.5)	6.616	0.010
	Good	24 (23.3)	39 (40.2)	63 (31.5)
	Total	103 (100)	97 (100)	200 (100)
Height of keyboard from the floor	Poor	13 (12.6)	18 (18.6)	31 (15.5)	1.344	0.246
	Good	90 (87.4)	79 (81.4)	169 (84.5)
	Total	103 (100)	97 (100)	200 (200)
Light intensity of room	Poor	98 (95.1)	74 (76.3)	172 (86.0)	14.754	0.001
	Good	5 (4.9)	23 (23.7)	28 (14.0)
	Total	103 (100)	97 (100	200 (100)
Light intensity between participant and computer	Poor	102 (99.0)	73 (75.3)	175 (87.5)	25.809	0.001
	Good	1 (1.0)	24 (24.7)	25 (12.5)
	Total	103 (100)	97 (100)	200 (100)