Confocal scan features of keratic precipitates in granulomatous versus nongranulomatous uveitis

ABSTRACT

To compare the morphologic features of keratic precipitates [KPs] by confocal microscopy in granulomatous versus nongranulomatous noninfectious uveitis. KP morphology was determined by confocal scan in patients with noninfectious granulomatous and noninfectious nongranulomatous uveitic cases. One hundred and twenty-seven eyes of 90 subjects with noninfectious uveitis were studied. Thirty-nine eyes had granulomatous and 88 had nongranulomatous uveitis. Smooth-rounded KPs were significantly more common in the granulomatous subgroup [P<0.001] while cruciform and dendritiform KPs were more frequent in nongranulomatous uveitis [P<0.001 and P<0.005 respectively]. Confocal scan may be used as an adjunctive tool for differentiating granulomatous from nongranulomatous uveitis. Smooth-rounded KPs are strongly suggestive of granulomatous inflammation