In a busy clinic, it is time consuming process to perform two test grids, the 24-2 and 10-2 at the same clinical visit. (7-10) If the visual field loss occurs centrally (towards fixation), it impacts patient’s functional vision to a greater extent. (3,5,6) It is often assumed that glaucomatous visual field defects affect in the peripheral field, however, in clinical scenario, significant defects within central part of the visual field (with or without involving macula) were reported to be indicating of advanced glaucoma. This system focuses on testing particular areas in Retinal Nerve Fiber Layer (RNFL) which are mostly affected in glaucoma. The 24-2 SITA-Standard test pattern in Humphrey Field Analyzer (HFA) is widely used in standard clinical setting to detect the glaucomatous visual field defects. Visual field is generally used for disease staging, monitoring the disease progression especially in glaucoma and correlation with the patient’s quality of life. Visual Field Analyzer is one of the essential factors for assessing the functional changes in glaucoma assessment. Optom Optometrist, Dr Shroff’s Charity Eye Hospital, New Delhi It seems that the evaluation of progression of visual field defect in the central area needs to be considered carefully.Jayanti Chaudhary, B. However, no correlation between the VFI slope and MD slope existed in the paracentral area. K statistic evaluated a moderate agreement between the VFI slope and MD slope.Ī significant correlation was shown between the VFI and MD, VFI slope and MD slope in all eyes. However, these correlations were not evident in paracentral type of defect but in the other types. The correlation between the VFI slope and MD slope was significant in all eyes. A generalized-estimating-equation(GEE) model and kappa statistic were used for analysis.Ī significant correlation between MD and VFI was shown in all eyes, including eyes classified of visual field defect. (iii) The agreement degree between the VFI slope and MD slope was examined. The correlation of the (i) VFI and MD, (ii) VFI slope and MD slope were analyzed in all eyes and the eyes were classified by visual field patterns (paracentral, peripheral, mixed and normal defect type). All eyes underwent examination by the Humphrey visual field analyzer. This retrospective study was performed on 105 eyes of 60 patients. We examined the correlation between the visual field index (VFI) and mean deviation (MD), as well as the correlation on VFI slope and MD slope.
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