What explains health in persons with visual impairment?

Table 3 ICF categories referring to Body functions and Body structures

ICF code	ICF category title	Total sample (N = 105)						Sample stratified by VI-category^#
		ICF qualifier (1–4)^§						Moderate (n = 40)	Severe (n = 25)	High-grade (n = 14)	Blindness (n = 26)
		1	2	3	4	Sum 1-4		Sum 1-4
		n	n	n	n	n	%	%	%	%	%
b210	Seeing functions	4	18	61	22	105	100.0	100.0	100.0	100.0	100.0
b220	Sensations associated with the eye and adjoining structures	46	15	4	1	66	62.9	70.0	72.0	64.3	42.3
b126	Temperament and personality functions	30	25	6		61	58.1	62.5	68.0	42.8	50.0
b130	Energy and drive functions	34	12	5		51	48.6	65.0	44.0	35.7	34.6
b215	Functions of structures adjoining the eye	21	12	3	1	37	35.6	27.5	44.0	28.6	44.0
b280	Sensation of pain	21	9	5		35	33.3	40.0	24.0	28.6	34.6
b152	Emotional functions	20	11			31	29.8	37.5	24.0	23.1	26.9
b134	Sleep functions	16	9	5		30	28.8	32.5	25.0	28.6	26.9
b235	Vestibular functions	16	7			23	21.9	15.0	40.0	14.3	19.2
b240	Sensations associated with hearing and vestibular function	15	5			20	19.2	12.8	28.0	21.4	19.2
b144	Memory functions	19	1			20	19.0	25.0	20.0	14.3	11.5

ICF categories are reported that were coded as at least mildly impaired in more than five percent of participants, ordered by frequency (n). Results are shown for total sample and stratified by VI-category.
VI = visual impairment.
^§1: mild difficulty, 2: moderate difficulty, 3: severe difficulty, 4: complete difficulty.
^#Moderate VI: BCVA 20/63 - 20/200, Severe VI: BCVA 20/200 - 1/20, High-grade VI: BCVA 1/20 - 1/50, Blindness: BCVA ≤ 1/50.

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