Optical coherence tomography of band keratopathy

Description

Band keratopathy is a chronic degenerative disease characterised by the gradual deposition of greyish opacity in superficial cornea over months or years in eyes with chronic uveitis or on intensive topical therapies containing phosphates. The mechanism of calcium deposition in the interpalpebral area of the cornea is multifactorial: salt precipitation as tears evaporate, necrotic debris from superficial keratitis, inflammatory changes in the pH of the ocular surface and the breakdown of phosphates.12 Band keratopathy can result in severe visual loss from corneal opacification. The main goal of surgery is to restore corneal transparency, providing visual rehabilitation, and avoiding amblyopia in children. Treatment includes removal of calcium deposits by chelation using ethylenediaminetetraacetic acid (EDTA), or superficial keratectomy or phototherapeutic keratectomy.3 The choice of the surgical technique and the required depth of surgery can be optimised by prior visualisation of the calcium...

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