are often described as indolent. These superficial ulcers persist because the corneal epithelium is unable to adhere to the underlying stroma (FIGURE 3). Indolent ulcers stain similarly to simple ulcers; however, staining can be observed underneath the periphery of the corneal epithelium, indicating detachment from the underlying stroma. Furthermore, the edges of these ulcers can be easily debrided to reveal a significantly larger corneal defect. In these cases, the presence of corneal edema and neovascularization is variable. Although no obvious cause can be found in most cases, microbial infection of the superficial layers of exposed stroma, abnormalities of tear production, or primary epithelial failure may be responsible.10 As continuous mechanical disruption of the corneal epithelium can also be associated with indolent ulcers, a thorough examination of the eyelids, conjunctival fornix, and third eyelid should be performed.