www.advancedvisionsurgery.com 23 year old female with markedly reduced vision due to bilateral su epithelial anterior stromatolites corneal deposits caused by Thiel-Behnke corneal dystrophy. Both eyes were treated with a 90micron depth trans-epithelial PTK using the Schwind Amaris excimer laser. The patients'svision improved to 6/6 with glasses. www.advancedvisionsurgery.com