Skip to main content

Table 2 NEI VFQ-25 Item Codes and Summary Statements and Additional Items Used in the Construction of the NEI VFQ-28- R

From: Development of a new Rasch-based scoring algorithm for the National Eye Institute Visual Functioning Questionnaire to improve its interpretability

Item Statement Summary NEI VFQ-25 (Reliability: 0.93) NEI VFQ-28-R (Reliability: 0.94)
Dr Mr Mt Df Dp Dr Mr Mt Df Dp
VF2 Eyesight quality
VF3 Time spent worrying about eyesight
VF4 Amount of pain in/around eyes p1
VF5 Difficulty reading newspaper print size p1
VF6 Difficulty seeing well up close
VF7 Difficulty finding objects
VF8 Difficulty reading street signs
VF9 Difficulty going downstairs or curbs in dim light ~ ~
VF10 Difficulty with peripheral vision ~
VF11 Difficulty seeing other people reactions
VF12 Difficulty matching clothes
VF13 Difficulty visiting others ~
VF14 Difficulty going out
VF15C Difficulty driving during day
VF16 Difficulty driving at night ~ p2
VF16A Difficulty driving in difficult conditions p2
VF17 Limited in time to accomplish activities
VF18 Limited in time at work due to eyesight
VF19 Limited in time due to pain or discomfort around eyes p1
VF20 Time staying at home due to eyesight
VF21 Time frustrated due to eyesight
VF22 Amount of control lost due to eyesight
VF23 Reliance on what other people say due to eyesight p3
VF24 Amount of help from others due to eyesight ~ p3
VF25 Embarrassed doing things because of eyesight
VFA3 Difficulty reading small print (e.g. medicine bottle) N/A N/A N/A N/A N/A p1
VFA4 Difficulty reading mail/bills accurately N/A N/A N/A N/A N/A
VFA5 Difficulty shaving or putting on makeup N/A N/A N/A N/A N/A ~
VFA6 Difficulty recognizing faces due to eyesight N/A N/A N/A N/A N/A
VFA7 Difficulty taking part in outdoor activities N/A N/A N/A N/A N/A
VFA8 Difficulty seeing television N/A N/A N/A N/A N/A
  1. Dr: Items with disordered response thresholds
  2. Mr: Mis-fitting items (based on fit Residuals outside −2.5 to +2.5)
  3. Mt: Mis-fitting items (based on statistically significant Item–trait chi-squared values)
  4. Df: Significant differential item functioning (DIF), based on statistically significant F-values
  5. Dp: Item pairs with potential dependency (r > 0,30)