Researcher finds a turtle eye muscle adapts to deal with obstructed vision

In a recent study published in The Journal of Comparative Neurology, Saint Louis University professor of pharmacological and physiological science Michael Ariel, Ph.D., reported surprising findings about the eye movements of pond turtles who can retract their head deep into their shell. While researchers expected that the pond turtle's eyes would operate like other animals with eyes on the side of their heads, this particular species of turtle appears to have characteristics of both front and side-eyed animals, affecting a specific eye muscle's direction of pull and the turtle's eye position when its peripheral vision is blocked by its shell.

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