Journal
HEALTH TECHNOLOGY ASSESSMENT
Volume 26, Issue 8, Pages -Publisher
NIHR JOURNALS LIBRARY
DOI: 10.3310/VLFL1739
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Funding
- National Institute for Health Research (NIHR) Health Technology Assessment programme [8]
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Neovascular age-related macular degeneration is a major cause of sight loss, and early detection and treatment are crucial. Current practice involves monitoring the unaffected eye of patients with the disease in one eye, but the diagnostic accuracy of non-invasive tests is unclear. This study aims to determine the diagnostic monitoring performance, cost-effectiveness, and predictive factors of developing the disease in the second eye of patients with unilateral neovascular age-related macular degeneration.
Background: Neovascular age-related macular degeneration is a leading cause of sight loss, and early detection and treatment is important. For patients with neovascular age-related macular degeneration in one eye, it is usual practice to monitor the unaffected eye. The test used to diagnose neovascular age-related macular degeneration, fundus fluorescein angiography, is an invasive test. Non-invasive tests are available, but their diagnostic accuracy is unclear. Objectives: The primary objective was to determine the diagnostic monitoring performance of tests for neovascular age-related macular degeneration in the second eye of patients with unilateral neovascular age-related macular degeneration. The secondary objectives were the cost-effectiveness of tests and to identify predictive factors of developing neovascular age-related macular degeneration. Design: This was a multicentre, prospective, cohort, comparative diagnostic accuracy study in a monitoring setting for up to 3 years. A Cox regression risk prediction model and a Markov microsimulation model comparing cost-effectiveness of the index tests over 25 years were used. Setting: This took place in hospital eye services. Participants: Participants were adults (aged 50-95 years) with newly diagnosed (within the previous 6 weeks) neovascular age-related macular degeneration in one eye and an unaffected second (study) eye who were attending for treatment injections in the first eye and who had a study eye baseline visual acuity of >= 68 Early Treatment Diabetic Retinopathy Study letters. Interventions: The index tests were Amsler chart (completed by participants), fundus clinical examination, optical coherence tomography, self-reported vision assessment (completed by participants) and visual acuity. The reference standard was fundus fluorescein angiography.
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