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Actual image of the integral of retinal nerve fibre layer RNFL thickness in the nerve fibre analyser. The longitudinal axis indicates the thickness of the RNFL (µm). The integral of RNFL thickness indicates the sectional area which is the integration of the thickness of the RNFL calculated along the transverse axis. S=superior quadrant; T=temporal quadrant; I=inferior quadrant; N=nasal quadrant.
