The Houston Vision Assessment Test (HVAT): an assessment of validity

Abstract

The HVAT has 11 simple questions. It may be self-administered and is available on the Internet: http://www.DHAC.com. The physician may err if his decision in favor of cataract surgery is based only on visual acuity. The HVAT has the potential to guide the decision-making process between patient and physician.

Questionnaires for measuring cataract surgery outcomes

“…The authors concluded that the 10-items-plus-1 validity question did not impose a burden on the subject or the administering health professionals. 26 Conclusion The HVAT has not been reevaluated with item-response theory tests.…”

“…26 This 10-item questionnaire is evaluated by a scoring system in which each item score is multiplied with a coefficient based on how much the limitation in a daily activity is due to poor vision alone (assessed by the patient). The scores are summarized and multiplied by 4, giving a total range of 1 to 100.…”

The Diagnosis and Characteristics of Moderate Dry Eye in Non-Contact Lens Wearers

“…The results of a subgroup of 10 female subjects with dry eye between the ages of 30 and 50 years were age-matched to a subgroup of 10 healthy female subjects. A subgroup of 13 subjects with dry eye repeated the TERTC-DEQ 8 to 12 weeks after the initial visit (test-retest reliability 14 ). Also, 38 subjects (17 healthy subjects and 21 subjects with dry eye) completed the McMonnies and Ho questionnaire in addition to the TERTC-DEQ to estimate concurrent validity.…”

“…Also, 38 subjects (17 healthy subjects and 21 subjects with dry eye) completed the McMonnies and Ho questionnaire in addition to the TERTC-DEQ to estimate concurrent validity. 14 All procedures involving human subjects were approved by the University of Houston Institutional Review Board and were in accordance with the tenets of the Declaration of Helsinki. Informed consent was obtained from all subjects.…”

From visual function deficiency to handicap: Measuring visual handicap in Mali

“…Validated questionnaires that attempt to quantify 'perceived vision' have already been developed. [4][5][6] These questionnaires seek to measure visual function, quantifying the consequences of blindness or low vision in daily life that affect the patient's autonomy or mobility. However, the several instruments that have been developed and validated in Europe and the USA may not be appropriate for use in Africa.…”