AutoPeri(NM)

GHT, Glaucoma Hemifield Test.

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•Never rely on the grey scale alone to make a diagnosis

•Never rely on the visual field alone to make a diagnosis

•Always correlate with the clinical findings

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Questions

Is there a field defect?

•Is it due to glaucoma?

•Is the defect progressing?

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Glaucomatous defects

•Characteristics of glaucomatous defects:

–Asymmetrical across the horizontal midline*

–Located in the mid-periphery* (5–25 degrees from fixation)

–Reproducible

–Not attributable to other pathology

–Localised

–Correlating with the appearance of the optic disc and neighbouring areas

*Applicable to early/moderate cases.

SEAGIG. Asia Pacific Glaucoma Guidelines©.2003Thomas–2004R .

Criteria for glaucomatous defects (1)

Pattern deviation plot

•≥ 3 non-edge points with p < 5%

•One point with p < 1%

•Cluster in arcuate area

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Criteria for glaucomatous defects (2)

CPSD or PSD depressed with p < 5%

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Criteria for glaucomatous defects (3)

Abnormal GHT

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Three criteria for glaucomatous defects*

1.Pattern deviation plot

–≥ 3 non-edge points with p < 5%

–One point with p < 1%

–Cluster in arcuate area

2.CPSD or PSD depressed with p < 5%

3.Abnormal GHT

*Anderson DR, Patella VM. Automated Static Perimetry. 2nd Edn. St Louis: Mosby, 1999.

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