The onset may be spontaneous or may be triggered by a traumatic injury to the cornea (e.g., fingernail scratch, paper cut) or recent ocular surgery (e.g., cataract surgery, LASIK, or blepharoplasty ). Patients of all ages and both genders can be affected, although the most common age range at time of presentation is 25 to 75 years of age. Thus in patients with ABMD, due to reduced adherence of the corneal epithelium to the underlying corneal stroma, the sudden retraction of the upper eyelid upon awakening may precipitate a tear in the corneal epithelium.Depending on the severity of the erosion, symptoms of pain and blurred vision may last for an hour or several days until the epithelium spontaneously heals.ĪBMD is the most common corneal dystrophy, affecting an estimated 2-3% of the population. Since the natural tear production subsides during sleep, the eye dries somewhat and the upper lid may become slightly adherent to the cornea. Recurrent erosions typically occur upon awakening in the morning, resulting in pain, tearing, light sensitivity, and blurred vision upon awakening. This build-up of abnormal material can result in reduced adherence of the epithelium to the underlying stromal layer of the cornea, predisposing to spontaneous “erosions” of the cornea, as well as distorted or blurred vision. (ABMD also known as Map-Dot-Fingerprint Corneal Dystrophy, Cogan’s Microcystic Dystrophy, or Epithelial Basement Membrane Dystrophy ) is an inherited disorder of the cornea that may present with a variety of symptoms, including recurrent corneal erosions and/or blurred vision.ĭue to abnormal buildup of a microscopic amount of substance under the surface layer of the cornea over the course of many years, the surface cell layer of the cornea, known as the corneal epithelium, can become irregularly elevated from the underlying stromal layer of the cornea. The information is not intended for the management of an individual case or to substitute for the advice of a treating physician The information provided in this text is current and provided for educational purposes.
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