JOURNAL ARTICLE

Reliability and validity of the National Eye Institute Visual Function Questionnaire-25 in patients with age-related macular degeneration

Dennis A Revicki, Anne M Rentz, Neesha Harnam, Vince S Thomas, Paolo Lanzetta
Investigative Ophthalmology & Visual Science 2010, 51 (2): 712-7
19797233

PURPOSE: To evaluate the psychometric characteristics of the National Eye Institute Visual Function Questionnaire-25 (NEI VFQ-25) in patients with age-related macular degeneration (AMD) who participated in two clinical trials.

METHODS: A secondary analysis of data from two randomized clinical trials was performed. NEI VFQ-25 data were collected from 1134 of 1146 patients with subfoveal choroidal neovascularization due to AMD with minimally classic or occult with no classic types and predominantly classic type. The NEI VFQ-25 was administered at baseline and months 1, 2, 3, 6, 9, and 12, and the SF-36 Health survey was administered at baseline and months 6 and 12. Visual acuity assessments were completed monthly throughout the studies. Internal consistency reliability and construct validity were examined.

RESULTS: The average age was 77 years (SD = 7.5; range, 52-96) with 59% women. At baseline, internal consistency reliability was 0.96 for the NEI VFQ-25 total score and ranged from 0.62 (ocular pain) to 0.91 (near activities) for the subscales. NEI VFQ-25 total and subscale scores correlated significantly with SF-36 scores (P < 0.05), and total, near activities, distance activities, and dependency scores correlated significantly with best corrected visual acuity (BCVA) in the better (P < 0.0001) and worse seeing eye (P < 0.0001). Mean NEI VFQ-25 total and subscale scores, except for ocular pain and general health, varied by BCVA group (P < 0.001), with higher impairment scores seen in the lower visual acuity groups.

CONCLUSIONS: The NEI VFQ-25 demonstrated good reliability and construct validity as a measure of vision-related functioning outcomes in patients with AMD.

Full Text Links

Find Full Text Links for this Article

Discussion

You are not logged in. Sign Up or Log In to join the discussion.

Related Papers

Remove bar
Read by QxMD icon Read
19797233
×

Save your favorite articles in one place with a free QxMD account.

×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"