Journal of Ophthalmology / 2011 / Article / Tab 3

Clinical Study

Comparison of Photopic Negative Response of Full-Field and Focal Electroretinograms in Detecting Glaucomatous Eyes

Table 3

Sensitivity and specificity of the PhNR/b-wave amplitude ratio to discriminate glaucomatous eyes.

Sensitivity (95%CI)Specificity (95%CI)Cut-off value

Early

Full-field ERG23.8 (12.1–39.5)97.4 (86.5–99.6)0.19
Focal ERG
 Center61.9 (45.6–76.4)97.6 (87.4–99.6)0.22
 Sup/temp75.6 (59.7–87.6)97.6 (87.1–99.6)0.23
 Inf/temp73.1 (57.1–85.3)95.2 (83.8–99.3)0.29
 Combined97.6 (87.7–99.6)92.9 (87.7–99.6)

Intermediate

Full-field ERG40.7 (22.4–61.2)97.4 (86.5–99.6)0.20
Focal ERG
 Center67.9 (47.7–84.1)97.6 (87.4–99.6)0.22
 Sup/temp85.7 (67.3–95.9)97.6 (87.1–99.6)0.23
 Inf/temp78.6 (59.0–91.7)95.2 (83.8–99.3)0.29
 Combined96.4 (87.7–99.6)92.9 (87.7–99.6)

Advanced

Full-field ERG69.7 (51.3–84.4)97.4 (86.5–99.6)0.20
Focal ERG
 Center70.6 (52.5–84.9)97.6 (87.4–99.6)0.22
 Sup/temp90.9 (75.6–98.0)95.6 (87.1–99.6)0.23
 Inf/temp90.9 (75.6–98.0)95.2 (83.8–99.3)0.29
 Combined97.1 (87.7–99.6)92.9 (87.7–99.6)

PhNR: photopic negative response; CI: confidence interval; sup/temp: superior/temporal; inf/temp: inferior/temporal.

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