Thepars plicata (also known ascorona ciliaris[1]) (Latin: folded portion) is the folded and most anterior portion of theciliary body of an eye. The ciliary body is a part of theuvea, one of the three layers that comprise theeye. The pars plicata is located anterior to thepars plana portion of the ciliary body, and posterior to theiris. The lenszonules that are used to controlaccommodation are attached to the pars plana.
The pars plicata is the portion of the ciliary body that is responsible for producingaqueous humor, the fluid of theanterior chamber.[2] The production of too much aqueous humor, or reabsorption that occurs too slowly, can lead to increases in thepressure within the eye.