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  5. FP0377 : ROLE OF OCT IN DIFFERENTIATING BETWEEN GLAUCOMATOUS(GON) AND NON-GLAUCOMATOUS OPTIC NEUROPATHY(NGON)

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Chief & Presenting Author: Dr.Disha Samantaray

Co Author(s): Prof.Sumita Mohapatra, Dr.Susanta Pujahari

Abstract

AIM: To study role of SD-OCT in differentiating between GON and NGON. METHODS: Cross sectional study (Nov2023-April2024) in which 55patients (30GON, 25NGON) were included. SD-OCT ONH scan and RNFL thickness scan for 4quadrants and 4sectors; along with fundus examination with indirect ophthalmoscope & slit lamp biomicroscopy with 90D conducted for all patients. IOP with Goldmann applanation tonometry and Humphrey visual field analysis (HVFA) done for GON patients. Colour vision, RAPD, HVFA & neuroimaging with contrast-MRI done for NGON patients. P value<0.05 statistically significant. RESULT: GON patients showed cupping with higher vertical CDR & lower rim area compared to NGON. GON patients showed lower RNFL thickness in inferior quadrant (IT & IN sectors) followed by superior quadrant; NGON patients had variable RNFL thinning depending on cause. CONCLUSION: The study suggests that SD-OCT may be able to detect significant differences in patterns of changes between GON and NGON.