A 32-year-old Asian woman presented with a 10-year history of recurrent white matter on the right cornea. Slit-lamp examination revealed a 3 × 3 × 4 mm irregular keratotic lesion on the nasal limbus, extending 1 mm into the clear cornea. OCT confirmed superficial stromal infiltration. Previous surgical excision resulted in multiple recurrences. Repeated mechanical debridement under a slit lamp was performed at the workplace. Histopathology showed compact hyperkeratosis without cellular atypia, consistent with a benign lesion. The lesion recurred rapidly within 2–3 weeks after each debridement during the 12-month follow-up. The case highlights the rarity of primary corneal keratosis with aggressive relapsing behavior despite its benign nature.