RT Book, Section A1 Lueder, Gregg T. SR Print(0) ID 56150495 T1 Chapter 17. Bumps on the Iris T2 Pediatric Practice: Ophthalmology YR 2011 FD 2011 PB The McGraw-Hill Companies PP New York, NY SN 9780071633802 LK accesspediatrics.mhmedical.com/content.aspx?aid=56150495 RD 2024/03/29 AB Table Graphic Jump Location|Download (.pdf)|PrintThe Problem“My child has bumps on the colored part of the eye.”Common CausesSmall iris cysts at the pupillary borderLisch nodulesIris neviOther CausesLarge iris cystsCongenital iris ectropionIntraocular tumor (diktyoma)Iris mammillationsJuvenile xanthogranulomaKEY FINDINGSHistorySmall lesions on the iris are usually asymptomatic and do not affect vision. A history of eye pain, corneal clouding, or decreased vision suggests a possible tumor. Juvenile xanthogranuloma (JXG) may be associated with small orange-brown papules on the head or face. Iris JXG lesions may bleed, and the resultant hyphema may cause ocular pain.ExaminationWithout a slit lamp, evaluation of iris lesions may be difficult, particularly in a noncooperative toddler. Some lesions may be visible with a penlight. Benign iris cysts are often seen best by examining the pupil margin when evaluating the red reflex with a direct ophthalmoscope.