Comparison of the original Amsler grid with the preferential hyperacuity perimeter for detecting choroidal neovascularization in age-related macular degeneration
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Data
2007
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Purpose: To compare the preferential hyperacuity perimeter (Preview
PHP; Carl Zeiss Meditec, Dublin, CA) with the original Amsler grid in the
detection of choroidal neovascularization (CNV) in patients with age-
related macular degeneration (AMD). Methods: Patients were classified
into groups, based on the severity of the age-related macular degeneration
and underwent preferential hyperacuity perimeter and Amsler grid testing.
High sensitivity and or high specificity of a method were defined as the
observation of at least 80% of each one the parameters. Results: Sixty-five
patients (65 eyes) were analyzed statistically. The sensitivity of detection
of choroidal neovascularization was 70% by the Amsler grid and 90% by
the preferential hyperacuity perimeter and the specificity of the Amsler
grid was 85.5% and that of the preferential hyperacuity perimeter 81.8%.
Conclusions: The preferential hyperacuity perimeter has greater sensitivity
than the Amsler grid in the detection of choroidal neovascularization
among patients over 50 years of age and is a promising method for
monitoring patients with age-related macular degeneration. Although
the original Amsler grid is less sensitive, it is a portable method, not
expensive, accessible and presents reasonable sensitivity and high
specificity in the diagnosis of choroidal neovascularization. Its use can
be recommended for self-monitoring in patients with age-related macular
degeneration as an alternative to preferential hyperacuity perimeter and
when this method is not available. Apesar de a tela de Amsler original ser menos sensível, é
método portátil, financeiramente acessível, e apresenta razo-
ável sensibilidade e alta especificidade no diagnóstico da
neovascularização de coróide. Sua utilização pode ser reco-
mendada para o automonitoramento de pacientes com dege-
neração macular relacionada à idade como alternativa ao
perímetro de hiperacuidade preferencial.
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Palavras-chave
Macular degeneration, Comparative study, Vision tests, Patient selection, Choroidal neovascularization, Perimetry/ methods, Degeneração macular, Estudo comparativo, Testes visuais, Seleção de pacientes, Neovascularização coroidal, Perimetria/métodos
Citação
ISAAC, David Leonardo Cruvinel; ÁVILA, Marcos Pereira de; CIALDINI, Arnaldo Pacheco. Comparision of the original amsler grid with the preferential hyperacuity perimeter for detecting chroidal neovascularization in age-related macular degeneration. Arquivos Brasileiros de Oftalmologia, São Paulo, v. 70, n. 5, p. 771-776, Sept./Oct. 2007.