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

PURPOSE: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.). METHODS: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. RESULTS: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. CONCLUSION:The Medmont perimeter seems to be efficient in its performance of central threshold testing and significantly cuts down the test time.