Fig 1.
Illustrating the literature search, screening process, and articles included in this review. PRISMA = Preferred Reporting Items for Systematic Reviews and Meta Analyses; MEDLINE = Medical Literature Analysis and Retrieval System Online.
Fig 2.
Risk of bias and inapplicability appraisals for each included study.
Appraised with the QUADAS-2 framework. QUADAS-2 = Quality Assessment of Diagnostic Accuracy Studies 2; RoB = risk of bias; CrA = concerns regarding applicability.
Table 1.
Characteristics of each of the included studies.
Table 2.
Accuracy data.
Fig 3.
Forest plot summarising Bland-Altman analyses of accuracy.
LLOA = lower 95% limit of agreement; ULOA = upper 95% limit of agreement; PDF = portable document format; ETDRS = Early Treatment of Diabetic Retinopathy Study; logMAR = logarithm of the minimum angle of resolution.
Table 3.
Test-retest agreement.