Linganisha mbinu

	Kielelezo cha Kazi ya Kuona VF-14	Indexi wa Ugonjwa wa Macho (Ocular Surface Disease Index - OSDI)
Nyanja	Oftalmolojia	Oftalmolojia
Familia	Process / pipeline	Process / pipeline
Mwaka wa asili	1994	2000
Mwanzilishi	Steinberg EP, Tielsch JM et al.	Schiffman RM, Christianson MD et al.
Aina	Self-report	Self-report
Chanzo asilia	Steinberg, E. P., Tielsch, J. M., Schein, O. D., et al. (1994). The VF-14. An index of functional impairment in patients with cataract. Arch Ophthalmol, 112(5), 630-638.	Schiffman, R. M., Christianson, M. D., Jacobsen, G., Hirsch, J. D., & Reis, B. L. (2000). Reliability and validity of the Ocular Surface Disease Index. Arch Ophthalmol, 118(5), 615-621.
Majina mbadala	VF-14, Visual Function-14	OSDI, Ocular Surface Index
Zinazohusiana	4	4
Muhtasari	The VF-14 is a 14-item, disease-specific functional status questionnaire developed to measure visual disability from cataract and its response to cataract surgery. Created by Steinberg, Tielsch, and colleagues (1994), the VF-14 focuses on difficulty with 14 common daily activities (e.g., reading small print, driving day/night, recognizing faces) and is used primarily to assess cataract severity, prioritize surgery, and document post-operative improvement in functional vision.	The OSDI is a 12-item symptom questionnaire designed to screen for and grade the severity of dry eye disease and other ocular surface disorders. Developed by Schiffman, Christianson, and colleagues (2000), it quantifies patient-reported ocular irritation and visual function limitations across frequency and impact domains. The OSDI is the most widely used screening tool for dry eye in clinical practice, clinical trials, and epidemiological studies worldwide.