Comparison of visual field defects between newly detected chronic simple glaucoma and normotensive glaucoma
DOI:
https://doi.org/10.7439/ijbr.v6i6.2060Abstract
Objective : To study and compare the visual field defects in subjects with newly detected primary open angle glaucoma and normotensive glaucoma using HUMPHREY FIELD ANALYSER 30-2 swedish interactive thresholding algorithm(SITA) standard technique and to establish specific visual field loss patterns in each group and establish varied pathomechanisms. Methods: A prospective study 37 eyes of 25 patients with normal tension glaucoma(NTG) and chronic simple glaucoma(CSG). Patients were subjected to visual field testing using HUMPHREY FIELD ANALYSER(HFA) 30-2, SITA(Swedish interactive thresholding algorithm) standard method. Results: There was significant preponderance of early visual field defects in patients with NTG in comparison to patients with CSG (64% compared to 32.4%). Strong statistical differences were found in number of patients with scotomas falling with 6 degrees of central fixation (p _0.001) in NTG comparing with CSG. Conclusion : results suggest that field defects between chronic simple and normotensive glaucoma do not differ in most aspects except for those in NTG group being closer to fixation and should not be used to underline different pathomechanisms in the two groups.Downloads
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