The Ability of Medmont M600 Automated Perimetry to Detect Threats to Fixation

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Abstract
The authors studied the sensitivity and specificity of the Medmont M600 central 10° program (Medmont PTY Ltd., Camberwell, Victoria, Australia) in identifying paracentral threats to fixation mapped on the Humphrey program 10–2 (Humphrey Inst. Inc., San Leandro, CA, U.S.A.). Humphrey automated threshold perimetry (program 10–2) and Medmont M600 automated threshold perimetry (central 10° program) were performed on 62 eyes of 62 patients with glaucoma, and their paracentral point defects on the field were investigated. The sensitivity and specificity of Medmont central 10° program were analyzed. The sensitivity and specificity of Medmont M600 central 10° field was 78% and 81% within 1°, and 95% and 83% within 3° in detecting the field defects on the Humphrey program 10–2. The Medmont M600 central 10° threshold visual field test look 36% of the testing time required for the Humphrey threshold 10–2 visual field examination. The Medmont perimeter seems to be efficient in its performance of central threshold testing and significantly cuts down the test time.

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