NCT Number: NCT00958360
This study will determine if the interdisciplinary team low vision rehabilitation program is more effective than basic low vision care provided by an optometrist working alone in improving visual reading ability in veterans with macular diseases and best corrected visual acuity of 20/50 to 20/200.
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Notify Me18 year and older
All sexes
Interventional
Phase 2
Edward Hines Jr. VA Hospital, Hines, IL, Hines, Illinois, United States
Key Questions: The purpose of our proposed single-masked multicenter randomized controlled trial is to determine if the Interdisciplinary Team approach to low vision service delivery is more effective than the Basic Low Vision Service in improving visual reading ability for 330 veterans with macular diseases and best corrected visual acuity of 20/50-20/200. Effectiveness will be measured with the Veterans Affairs Low Vision Visual Functioning Questionnaire (VA LV VFQ-48), a valid and reliable questionnaire that is administered by telephone to capture changes in patients' self-report of their difficulty reading and performing other daily living activities affected by visual impairment before and after rehabilitation. The primary outcome measure is the comparison of changes in patients' visual reading ability on the VA LV VFQ-48 after they receive low vision care from the Interdisciplinary Team or Basic Low Vision Care program. The secondary outcome measures are comparisons of changes in other VA LV VFQ-48 visual ability scores (overall, mobility, visual information processing, visual motor skills). Hypothesis: The improvement in visual reading ability measured with the VA LV VFQ-48 will be larger for patients who received low vision services from the Interdisciplinary Team than for patients who received the Basic Low Vision Service. Specific Aims:(1) Compare the mean changes in patients' visual reading ability (estimated from patients' difficulty ratings of reading items on the VA LV VFQ-48 before and after low vision service delivery) in the Interdisciplinary Team and Basic Low Vision Care Programs.(2) Compare the mean changes in visual ability [patients' difficulty ratings of other items on the VA LV VFQ-48 (mobility, visual information processing, visual motor skills) before and after low vision service delivery] in the Interdisciplinary Team and Basic Low Vision Care programs.(3). Identify the characteristics of patients who benefit from the Interdisciplinary Team and Basic Low Vision Service. (4). Conduct an economic evaluation to compare the costs and cost effectiveness of the Interdisciplinary Team and Basic Low Vision Service.
Healthy volunteers accepted: No
Only the study team can determine whether someone qualifies for participation.
Inclusion criteria
Exclusion criteria
Services are provided by optometrist(s) and low vision therapist(s), and include low vision therapy to improve use of remaining vision and low vision devices, and structured homework to practice use of low vision devices that are prescribed and dispensed.
Other names: Interdisciplinary Low Vision Rehabilitation
Service is provided by the optometrist alone and includes demonstration of low vision device use and maintenance of prescribed low vision devices, without low vision therapy or homework and with less contact time.
Other names: Basic Low Vision Rehabilitation
Time frame: changes from baseline to 4 months later
The range of scores for the Visual Reading Ability subscale of the VA Low Vision Visual Functioning Questionnaire is 0 to 3.5 logits (log odds ratio). A higher score indicates better ability or less difficulty performing activities.
Time frame: changes from baseline to 4 months later
The range of scores for the Mobility subscale of the VA Low Vision Visual Functioning Questionnaire is 0 to 3.5 logits (log odds ratio). A higher score indicates better ability or less difficulty performing activities.
Time frame: changes from baseline to 4 months later
The range of scores for the Visual Information Processing subscale of the VA Low Vision Visual Functioning Questionnaire is 0 to 3.5 logits (log odds ratio). A higher score indicates better ability or less difficulty performing activities.
Time frame: changes from baseline to 4 months later
The range of scores for the Visual Motor Skills subscale of the VA Low Vision Visual Functioning Questionnaire is 0 to 3.5 logits (log odds ratio). A higher score indicates better ability or less difficulty performing activities.
Time frame: changes from baseline to 4 months later
The range of scores for the Overall Visual Ability subscale of the VA Low Vision Visual Functioning Questionnaire is 0 to 3.5 logits (log odds ratio). A higher score indicates better ability or less difficulty performing activities.
VA Office of Research and Development
Fed
VA Low Vision Intervention Trial (LOVIT) II
Acronym: LOVIT II
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View the official ClinicalTrials.gov record (opens in a new tab)This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.
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