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Objective
Quantify visual acuity of a semi‐aquatic turtle species, Terrapene carolina triunguis (three‐toed box turtles), utilizing optokinetic response/reflex/nystagmus.
Methods
Ten turtles were placed on a custom platform and an image of white and black gratings of varying sized widths was projected onto a white screen in front of the turtles. Optokinetic response (OKR) was observed through a...
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