Map dot fingerprint dystrophy
These parallel lines and bleblike changes are due to irregularities in the epithelial basement membrane.
![map dot fingerprint dystrophy map dot fingerprint dystrophy](https://onegoodthing.us/wp-content/uploads/2018/12/epithelial-basement-membrane-dystrophy-a-study-with-in-vivo.gif)
Fingerprintlike changes of ABM dystrophy in retroillumination. These creamy white Cogan’s microcysts are tiny pockets of surface epithelial cells trapped beneath an abnormal epithelial basement membrane. These elevated areas can cause foreign body sensation and/or decreased vision.
![map dot fingerprint dystrophy map dot fingerprint dystrophy](https://i1.wp.com/fishmanvision.com/wp-content/uploads/2020/11/Screen-Shot-2020-11-08-at-10.38.38-AM.png)
Significant “negative staining” is evident due to areas of elevated epithelium. Fluorescein stain and the cobalt blue light view of the cornea in Figure 5-1A. Note the “mare’s tail” pattern of multiple epithelial layers. Maplike changes due to anterior basement membrane dystrophy. Eyes with recurrent erosions may have minimal clinical findings, localized areas of loose epithelium, or a frank epithelial defect.įigure 5-1 Anterior basement membrane dystrophy A.There may be “negative staining” from slightly elevated areas of epithelium seen with fluorescein dye ( Figures 5-1A, B, C, D). These findings are best seen with retroillumination and with a broad slit beam from the side. Slit-lamp examination shows maplike lines, dots (microcysts), and/or fingerprintlike epithelial lesions, which may occur singly or in various combinations.May note painless distortion of vision when the central cornea is involved.Can occur after trauma with a sharp object such as a fingernail, tree branch, or paper edge. Recurrent erosion syndrome: may have unilateral or bilateral recurrent episodes of pain in the middle of the night or upon opening the eyes after sleep.Trapped epithelial cells can form “Cogan’s microcysts.”
![map dot fingerprint dystrophy map dot fingerprint dystrophy](http://img.medscape.com/pi/emed/ckb/ophthalmology/1189694-1193945-402tn.jpg)
ABM dystrophy is due to an abnormality of production of epithelial basement membrane that extends into the epithelium, leading to multiple basement membranes in the corneal epithelium.ANTERIOR BASEMENT MEMBRANE DYSTROPHY (MAP-DOT-FINGERPRINT DYSTROPHY, COGAN’S MICROCYSTIC DYSTROPHY)Īnterior basement (ABM) dystrophy is a common epithelial dystrophy that can cause painful recurrent corneal erosions and/or decreased vision.