<unk> -term<unk>  lens use can lead to alterations in corneal thickness, stromal thickness, curvature, corneal sensitivity, cell density, and epithelial oxygen uptake, etc. Other changes may include the formation of epithelial vacuoles and microcysts (containing cellular debris) as well as the emergence of polymegethism in the corneal endothelium. Decreased corneal sensitivity, vision loss, and photophobia have also been observed in patients who have worn<unk>  lenses for an extended period of time. Many<unk>  lens-induced changes in corneal structure are reversible if<unk>  lenses are removed for an extended period of time. Knowledge concerning the form and function of the cornea and the various types of<unk>  lenses and their common complications is important to understanding this article. Epithelium (2) Anterior elastic lamina (3) Substantia propria (4) Posterior elastic lamina (5) Endothelium of the anterior chamber<unk>  lenses. Keratitis, or an inflammation of the cornea
Effects of long-term contact lens wear on the cornea
Recurrent corneal erosion
Pachychoroid disorders of the macula
Chronic relapsing inflammatory optic neuropathy
Fungal contamination of contact lenses
Recurrent painful ophthalmoplegic neuropathy
Peripheral ulcerative keratitis
Late congenital syphilitic oculopathy