Purchase this article with an account.
S. Shimmura, M. Ando, M. Ishioka, J. Shimazaki, K. Tsubota; Same-Size Donor Corneas for Myopic Keratoconus . Invest. Ophthalmol. Vis. Sci. 2003;44(13):4675.
Download citation file:
© ARVO (1962-2015); The Authors (2016-present)
Purpose: To determine the efficacy of using same-size donor grafts for keratoconus patients with axial myopia. Methods: One hundred and forty two eyes of 136 consecutive keratoconus patients were enrolled in a prospective interventional case series study. Penetrating keratoplasty (PKP) was performed by 3 skilled surgeons using the same technique with a single running 10-0 nylon suture. Donor button size was determined by a study protocol, where a same-size donor was used for eyes with an axial length (AXL) longer than 24.50 mm, while a 0.25 mm over-sized donor was used for eyes shorter than 24.49 mm. Results: Of the 142 consecutive eyes, 123 eyes were operated according to protocol. The average post-operative SE was -3.9 ± 3.2 D, with an average uncorrected visual acuity of 0.43 (0.95 average corrected). Post-operative SE correlated inversely (r=0.46) with pre-operative axial length (AXL) expressed by the equation: SE= -0.15 (AXL)² + 6.40 (AXL) - 71.82. Graft rejection was observed in 7 eyes (5.7%) and glaucoma in 2 eyes that required surgery. Conclusions: Using same-size donor grafts in keratoconus patients with a long visual axis is a safe and effective procedure in reducing post-operative myopia.
This PDF is available to Subscribers Only