Ocular JXG manifests in up to 10% of people with JXG and may affect their vision.[3] The presence of JXG in the eye can cause spontaneous hyphema, secondary glaucoma or even blindness.[3][5] It is most often seen in the iris but may be found on the eyelid, corneoscleral limbus, conjunctiva, orbit, retina, choroid, disc, or optic nerve. Of patients with ocular JXG, 92% are younger than the age of two.[4] Although cutaneous JXG usually disappear spontaneously, ocular lesions rarely improve spontaneously and require treatment. Treatments that have been used include surgical excision, intralesional steroid injection, cryotherapy, and low dose radiotherapy.