Secondary ectasia due to forceps injury at childbirth: management with combined topography-guided partial PRK and collagen cross-linking (Athens Protocol) and subsequent phakic IOL implantation.

摘要

A 23-year-old man, previously diagnosed with "progressive keratoconus" in his left eye, presented with uncorrected distance visual acuity (UDVA) of 20/20 in the right eye and counting fingers in the left eye, with 20/100 pinhole refraction. Refraction in the left eye was -9.50 -5.00 X 155deg with corrected distance visual acuity (CDVA) of 20/100. Keratom etry was 43.00/43.50 95deg and 51.00/56.80 60deg in the right and left eyes, respectively. Potential acuity measurement in the left eye (used to exclude severe amblyopia in that eye) was 20/60. Slit-lamp microscopy examination of the cornea revealed an oblique Descemet membrane split just temporal to the corneal center (Fig, image A), suggesting forceps injury at childbirth as the etiology of the ectasia.