A 10-year-old girl presented with acute pain and tearing in the left eye after waking up. She was wearing orthokeratology lenses, which she had inserted herself, the night before. She had a history of stinging in her left eye with orthokeratology lens wear. Slitlamp microscopy revealed a crescent-shaped corneal epithelial defect delineated by fluorescein stain and diffuse conjunctival congestion (Figure). The corneal abrasion coincided with the curved edge of the orthokeratology lens. Myopia develops rapidly primarily during childhood, and overnight orthokeratology is a popular choice among East Asian parents for myopia control.1 Safety of orthokeratology lens use cannot be ignored in children at home. The rigid lens material can result in corneal abrasions if the orthokeratology lens–wearing protocols are not strictly followed, especially when parental involvement is absent. Furthermore, bacterial corneal ulcers have been reported related to orthokeratology lens wear.2 The girl was prescribed levofloxacin eye gel and stopped wearing contact lenses. One week later, the corneal wound healed without any complications.