Visual Outcome Following Endoscopic Optic Canal Decompression in Compressive and Traumatic Optic Neuropathy- A Prospective Observational Study
Journal Title: Scholars Journal of Applied Medical Sciences - Year 2016, Vol 4, Issue 6
Abstract
Abstract: Aim of the study is to assess the effect of Latency (Interval between onset and treatment), Underlying pathology and Pre-operative vision, on the visual outcome in case of Compressive Optic Neuropathy and Latency (Interval between onset and treatment), Intra operative findings and Pre-operative vision, on the visual outcome in case of Traumatic Optic Neuropathy. This study was conducted in the ENT Department along with the ophthalmology department at Sundaram Medical Foundation, Chennai, 160 bedded community based hospital.Prospective observational study conducted from July 2007 to July 2009. This prospective observational clinical study was done to assess the visual outcome following endoscopic optic canal decompression among 24 patients (14 traumatic and 10 compressive) at our institution, who were followed up for 1 month after surgery. Patients were included as per inclusion criteria formulated for this study & were analyzed with respect to their pre-operative & post-operative vision using visual analog score. The data was analyzed in “SPSS10 for Windows (Statistical Package for Social Sciences)” software. The accuracy and the other characteristics are determined by its independent comparison with its “Gold standard test” by constructing 2x2 tables. Visual improvement was assessed using Log MAR score and recorded in the first post-operative day, 1 week later and at the end of 1 month. From the result it was concluded that, in compressive optic neuropathy, latency was not a significant factor to influence the visual outcome. Pathology and pre-operative vision were found to be contributory factors on visual improvement following endoscopic optic canal decompression. In traumatic optic neuropathy, latency and pre-operative vision were found to be contributory factors on visual improvement following endoscopic optic canal decompression. Type of intra-operative finding was not a significant factor to influence the visual outcome. The observations & results of our study of endoscopic optic canal decompression are in comparison to similar studies reported in recent world literature. Keywords:Endoscopic Optic Canal Decompression, Visual Analog Score, Optic Neuropathy, Logarithm of the Minimum Angle of Resolution (log MAR) Scale
Authors and Affiliations
Kamala Kannan S, Sumathi V, Murali Ariga, Krishna Kumar K
Keywords
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