1. A procedure to correct myopia (near sightedness) by applying heat to flatten the cornea. The heat shrinks the collagen (protein substance of the white fibers) in the substantia propria layer (transparent fibrous connective tissue) of the cornea.
2. A system in which the application of heat shrinks the collagen of the corneal stroma and flattens the cornea in the area of heat application. This tends to make the eye less myopic.