Abstract
In recent years, the development of disease or specific measures of functional status has provided additional insights to the functional status of patients following surgical procedures compared to the measures obtained from more traditional clinical outcome measures or from generic health status questionnaires (Patrick & Deyo, 1989). Several instruments related to functional impairment due to cataracts have been recently proposed (Mangione & al, 1992; Sloane & al, 1992; Brenner & al, 1993; Steinberg & al, 1994a). The index of visual functioning (VF-14 ®), and the Cataract Symptom Score ® (CSS) developed by Steinberg & al. (1994a) seem to be the more widely used (Steinberg & al. 1994b, Schein & al. 1994).
© 1996 Optical Society of America
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