RETINAL NERVE FIBRE LAYER THICKNESS AND OPTIC NERVE HEAD SIZE MEASURED IN MYOPES BY OCT: DOES MAGNIFICATION PLAY A ROLE?.

Purpose:To study RNFL thickness and optic nerve head (ONH) size in myopic eyes with and without magnification adjustments by optical coherence tomography and compare with magnification-adjusted OCT measurements of emmetropic control eyes. Methods: In a cross-sectional study, RNFL thickness (global circle and quadrants) andONH size (disc and rim areas) were measured in eyes of 25 myopic participants. Magnification adjusted measurements taken in myopes were then compared with adjusted measurements taken in 25 emmetropic controls. Results: Comparison of magnification-adjusted measurements between myopesandemmetropic controls showed that myopic eyes had significantly thicker globaland temporal RNFLs, thinner nasal RNFL and larger disc and rim areas. Superior and inferior RNFL thickness measurements did not differ significantly between the two groups. Conclusion: Magnification-adjusted OCT measurements show global and temporal RNFL thicknesses and ONH size increase in myopic eyes.

Keywords

Myopes RNFL thickness OCT.

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