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Abstract #15403 Published in IGR 1-3
Comparative study of two classifications of glaucomatous perimetric deficits
Risse J-F; Dumause A; Hue BJournal Français d'Ophtalmologie 1999; 22: 738-742
The purpose of this retrospectively study is to compare the results obtained using the unquestionable criteria, recommended by the American Academy of Ophthalmology versus the minimum criteria proposed by HODAPP. The first are founded on the degree of the depth of the deficits in dB, the second take into account the statistically significant loss. One hundred glaucomatous visual fields screened with the Humphrey perimeter, with program 24-2, are retained for their correct indices of reliability, a MD better than -12dB, and experience of the automated perimetry. This population was divided into two groups of 50: index MD greater than -6dB and index MD between -6 and -12dB. The deficits were analyzed on the graph of individual deviation. Arcuate scotoma and nasal step were the majority of defects: 86 to 90% at the stage of mild deficit; 98% at the stage of moderate deficit. The deficits prevailed in the superior hemifield in 60% of the cases. Nasal projection accounted for less than half of the deficts when MD was >- 6 dB. Its frequency fell fell to less than 10% when MD worsened. Conversely the frequency of arcuate scotoma increased. The isolated deficits decreased with the MD aggravation, but even when the deficit was mild, they accounted for already less than half of the cases. Most of the associated deficits were located in the hemifield opposite to the principal defect. Defects were larger and more frequently multiple with the AAO classification than with the HODAPP. The minimum criteria of the classification of glaucomatous visual field defects proposed by HODAPP appear to be more specific than the unquestionable criteria of the AAO, and also appear easier to use.
Service d'Ophthalmologie, CHU, Hôpital Jean Bernard, 350 avenue Jacques Coeur, F 85021 Poitiers, France
Classification:
6.6.2 Automated (Part of: 6 Clinical examination methods > 6.6 Visual field examination and other visual function tests)
