Feline Post-Traumatic Ocular Sarcoma (FPTOS) represents a malignant intraocular neoplasm, which may develop following severe inflammation and/or traumatic injury to the ocular structures (particularly the lens). Neoplastic changes typically take several years to develop. FPTOS encompasses several morphological variants, all of which are associated with the significant potential for extraocular extension and/or distant metastasis. Clinically, changes are typically unilateral and may include corneal edema, keratitis, corneal ulceration, uveitis, iridal thickening and/or dyscoria, the presence of an intraocular mass, hyphema, retinal detachment, glaucoma and/or exophthalmos.