ABSTRACT
The OFA (Octopus Field Analysis) software is a new software with Octopus strategy. Previous results with 30 degrees programs can be used for retrospective analysis and pursued. The "cluster" analysis is a marked improvement for diagnosis and monitoring in all glaucoma cases. In preperimetric glaucoma, some abnormalities are seen earlier than with the previous analysis program.
Subject(s)
Glaucoma/diagnosis , Glaucoma/physiopathology , Software , Visual Fields , Female , Humans , Male , Middle AgedABSTRACT
This study reports four clinical cases of papillary drusen associated with OHT. The authors show the advantages of HRT, OCT2, and GDx for exploring the optic nerve and/or the retinal nerve fiber layer (RNFL). The repercussions of drusen on the optic nerve head may precede visual field failure. Better knowledge of the interpretation of these new imaging techniques may help define the respective roles of drusen and OHT, in case of visual field attack, and treatment modalities. These new procedures may help us to monitor drusen and their progression potential.
Subject(s)
Optic Disk Drusen/diagnosis , Adult , Aged , Female , Humans , Male , Middle AgedABSTRACT
PURPOSE: To study the capabilities of a new perimetric strategy with the Octopus visual field analyzer: the Tendency Oriented Perimetry. METHODS: Tendency oriented perimetry (TOP) attempts to assess the visual field by using answers to questions to establish thresholds in the neighboring area. We evaluated 79 visual fields with the Octopus strategy using the program 32 and the TOP strategy split into the following groups: normal visual field or glaucoma suspects (52), moderately advanced glaucoma (16), advanced glaucoma (11). The following parameters were analyzed for the two strategies studied: examination time, MS (means sensitivity), MD (mean defect), LV (Loss Variance), short term fluctuation (RF) and the number of points with a deficit with different p values: p < 0.5; p < 1; p < 2; p < 5. RESULTS: TOP perimetry showed a significant reduction of exploration time: 11.87 minutes with the Octopus 32 vs 2.49 minutes with the TOP strategy (p < 0.001). There is no significant modification for the other parameters (MD, MS, RF) except for the LV (Loss Variance) for the global analysis and for each separate group. CONCLUSION: The TOP strategy reduces examination time significantly but seems to be less accurate especially for the calculation of the depth of each scotoma in comparison with the standard Octopus 32 perimetry.
Subject(s)
Algorithms , Diagnosis, Computer-Assisted , Glaucoma, Open-Angle/diagnosis , Visual Field Tests/instrumentation , Visual Field Tests/methods , Visual Fields , Adult , Aged , Aged, 80 and over , Glaucoma, Open-Angle/classification , Humans , Middle Aged , Reproducibility of Results , Scotoma/diagnosis , Sensitivity and Specificity , Severity of Illness Index , Time FactorsABSTRACT
The authors present the procedure used to quantify the perimetric data for some devices. The purpose is to follow accurately the evolution of perimetric defects in glaucoma: with the Friedmann analyser:global visual capabilities; with the Rodenstock Peritest:defect ratio; with the Autoperimeter 2000 (Dicon):Demailly index.
