2008
DOI: 10.1167/iovs.07-0511
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Uniformity of Visual Acuity Measures in Published Studies

Abstract: The methods used and the approach to analysis were rarely described in sufficient detail to allow others to replicate the study being reported. Sufficient detail should be given on VA measurement to enable others to duplicate the research. The authors suggest that charts adhering to Bailey-Lovie design principles always be used to measure vision in prospective studies and their use encouraged in clinical settings. The distinction between the terms logMAR, an acuity notation, and Bailey-Lovie or ETDRS as chart … Show more

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Cited by 42 publications
(39 citation statements)
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“…However, the calculation of single letter scoring ETDRS letter scores from a hard-copy scoring sheet is prone to error and typically takes 30 s. The scoring in COMPlog is automated and immediate. The closer crowding of letters on the computerised chart may offer 30 Investigation of means of reducing test times with the COMPlog system by altering the testing algorithm is ongoing. For example, by reducing the jump back between range finding and thresholding, it may be possible to achieve even shorter test times than the ETDRS chart.…”
Section: Discussionmentioning
confidence: 99%
“…However, the calculation of single letter scoring ETDRS letter scores from a hard-copy scoring sheet is prone to error and typically takes 30 s. The scoring in COMPlog is automated and immediate. The closer crowding of letters on the computerised chart may offer 30 Investigation of means of reducing test times with the COMPlog system by altering the testing algorithm is ongoing. For example, by reducing the jump back between range finding and thresholding, it may be possible to achieve even shorter test times than the ETDRS chart.…”
Section: Discussionmentioning
confidence: 99%
“…Todos os métodos de medida existentes, através de testes psicofísicos, desrespeitam o SI, apesar de aprimorados através de escala logarítmica (7) . A medida da visão em cd é uma possibilidade fomentar a discussão científica sobre os testes de medida da acuidade visual (AV), e as inúmeras conotações que vem sendo empregadas e publicadas por inúmeros autores (1,(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22) . Para uso da unidade cd sugerimos o emprego do submúltiplo picocandela (pcd); pois esse submúltiplo (x10 -12 ) é mais apropriado na avaliação de indivíduos normais.…”
Section: Discussionunclassified
“…Uma vez sob o comando inicial do examinador (1,2,3,4,5) é observada a interface gráfica segundo as equações computacionais (6,7). A interface gráfica inicial (8,9) para o examinado é composta de um círculo de raio proporcional a 1/8 do monitor.…”
Section: Figuraunclassified
“…23 The Early Treatment Diabetic Retinopathy Study (ETDRS) fast protocol was used for measurement of distance visual acuity on the Sloan 3 metre 2000 Series Revised ETDRS Chart, Precision Vision, La Salle, IL, USA; Table 4). 24,25 The standard ETDRS protocol was used for measurement with the PV numbers chart, and for measurement of near visual acuity. 26 The visual acuity score was specified in terms of the number of optotypes correctly identified, and converted back to the LogMAR scale later for analysis.…”
Section: Survey Pathwaymentioning
confidence: 99%