A pilot study for development of a novel tool for clinical decision making to identify fallers among ophthalmic patients

Table 3 Variables related to eye condition and visual function assessed with the structured questionnaire.

Variables	Categories or unit of measures	References
Ocular conditions	Cataract; pseudophakic; glaucoma; age-related macular degeneration; other retinal degeneration	[20, 23]
Use of bifocal / multifocal eyeglasses	Yes; no	[15, 23]
Use of eye drops	Yes; no
Best corrected visual acuity in each eye	Decimals	[17, 18, 20]
Visual acuity loss	Decimals	[23]
Recent refraction change	Yes; no	[23]
Intraocular pressure	mmHg (average both eyes)
Better vision	Sunny day; rainy day; indifferent
Blindness effects	No; entering indoor; exit indor
Activity of day vision scale: Items: Driving at night Seeing moving objects with night driving Oncoming headlights Daytime driving Drive in unfamiliar areas Read signs at night Read signs during the day See/recognize faces See television Read writing on television Read newspapers Read medicine bottles Read food cans Write checks Thread a needle	5 - no difficulty; 4 - little difficulty; 3- moderate difficulty; 2- extreme difficulty; 1- unable because of poor vision; Not Applicable (considered as missing data)	[24]

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