TY - JOUR T1 - Keratoconus associated with chromosome 13 ring abnormality JF - British Journal of Ophthalmology JO - Br J Ophthalmol SP - 1075 LP - 1075 DO - 10.1136/bjo.84.9.1075d VL - 84 IS - 9 AU - C J HEAVEN AU - F LALLOO AU - E McHALE Y1 - 2000/09/01 UR - http://bjo.bmj.com/content/84/9/1075.5.abstract N2 - Editor,—We wish to report a patient with a ring abnormality of chromosome 13 who developed keratoconus. As far as we are aware such an association has not previously been reported. This case may provide some further insight into the presumed genetic basis of keratoconus. CASE REPORT A 19 year old woman was referred by her optometrist because of impaired distance vision present for several months which could not be satisfactorily corrected with spectacles. There was no history of familial ocular problems. The patient did not suffer from atopy. Unaided visions were: right 6/9 part, left 6/24. The optimal spectacle correction and visual acuities were: right +1.00/−1.00 × 90 = 6/7.5, left +1.50/−3.00 × … ER -