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The increase of CD8+ TILs at recurrence was an excellent independent prognosticator.Subjective refraction is the gold-standard for prescribing refractive correction, but its accuracy is limited by patient's subjective judgment about their clarity of vision. We asked if an involuntary eye movement, optokinetic nystagmus (OKN), could serve as an objective measure of visual-clarity, specifically measuring the dependence of OKN-elicited by drifting spatial-frequency filtered noise-on mean spherical equivalent (MSE) refractive error. In Experiment 1 we quantifie