Fig. 28. UBM features of epibulbar mass lesions. (A) Composite UBM image of limbal dermoid. Lesion is sonoreflective and appears to replace full-thickness limbal cornea and sclera. (B) Squamous cell carcinoma of conjunctiva without intraocular invasion. Mass appears as fusiform thickening of limbal conjunctiva. (C) Squamous cell carcinoma of conjunctiva with scleral invasion. Invaded sclera appears abnormally sonolucent and nonuniform in thickness. (D) Extrascleral extension of ciliary body melanoma by way of scleral vascular or neural foramen.