The Effectiveness of Low Vision Rehabilitation in 2 Cohorts Derived from VA LOVIT II

Title The Effectiveness of Low Vision Rehabilitation in 2 Cohorts Derived from VA LOVIT II
Author, Co-Author Joan Stelmack, X Tang, Yongliang Wei, Scott Sayers, Robert Massof
Topic Low Vision
Year
2016
Day
Thursday
Program Number
165141
Room
Ballroom A-B
Affiliation
VA Edward Hines Blind Rehabilitation Center
Abstract

Purpose: LOVIT II was a single masked RCT to compare the effectiveness of LV rehabilitation (provision of LV devices, 1-3 therapy sessions with assigned homework) and basic LV (provision of LV devices with minimal instruction in their use) in veterans with macular diseases and BVA of 20/50 to 20/200. After the 4-month follow-up, basic LV participants were provided usual-care LV therapy. This study compares the changes in visual ability in both treatment groups from baseline to 12-month follow-up for 323 subjects enrolled in LOVIT II.

Methods: Outcomes were changes in overall visual ability and visual ability domain scores calculated from subsets of items (reading, mobility, visual information processing and visual motor) on the VA LV VFQ-48 from pre-intervention baseline to 12 months later.

Results: From pre-intervention baseline to 12-month follow-up, the LV rehabilitation group showed significant improvement ( p< 0.05) in overall visual ability (0.3 logits) and all visual ability domains (reading 0.5 logits, mobility 0.2 logits, visual information processing and visual motor (0.4 logits); and the basic LV group showed significant improvement ( p <0.05) in overall visual ability (0.2 logits) and all visual ability domains except visual information processing (reading and mobility 0.2 logits, visual motor 0.3 logits). Significant differences between the treatment groups were only found in visual information processing (0.4 vs. 0.1 logits, p <0.05) from baseline to 12-month follow-up. Changes in reading ability approached significance ( p = 0.06).

Conclusions: The LV rehabilitation protocol used in LOVIT II and usual – care provided by multidisciplinary VA LV programs are both effective in improving visual ability in veterans with macular diseases and visual acuity from 20/50 to 20/200. The protocol used in LOVIT II was more effective in improving visual information processing ability than usual VA LV care.

Affiliation of Co-Authors Hines VA Hospital, Hines VA Hospital, Hines VA Hospital, Johns Hopkins Wilmer Eye Institute
Outline