Medical Dictionary

pars plana

noun pars pla·na \ˈpärs-ˈplā-nə, ˈpärz-\

Medical Definition of pars plana

  1. :  the posterior part of the ciliary body extending from the pars plicata to the ora serrata—called also ciliary ring, orbiculus ciliaris


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a rounded knoll or a ridge of ice

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