Rapid visual recovery after penetrating keratoplasty for keratoconus
Article first published online: 13 NOV 2008
© 2008 The Authors. Journal compilation © 2008 Royal Australian and New Zealand College of Ophthalmologists
Clinical & Experimental Ophthalmology
Volume 36, Issue 8, pages 725–730, November 2008
How to Cite
Sutton, G., Hodge, C. and McGhee, C. N. (2008), Rapid visual recovery after penetrating keratoplasty for keratoconus. Clinical & Experimental Ophthalmology, 36: 725–730. doi: 10.1111/j.1442-9071.2008.01900.x
- Issue published online: 29 DEC 2008
- Article first published online: 13 NOV 2008
- Received 17 April 2008; accepted 14 October 2008.
- corneal graft;
Purpose: To ascertain the level and speed of visual recovery after penetrating keratoplasty for keratoconus.
Method: A retrospective review was performed of 100 consecutive cases of penetrating keratoplasty for keratoconus, performed between 1999 and 2005. Review assessed visual function and the speed at which patients achieved a functional best corrected visual acuity (BCVA) of ≥6/12 either with glasses or phoropter. Analysis of visual, refractive and keratometric results were made on 76 eyes that had reached 6 months after suture removal. Intraoperative and postoperative complications including graft rejections were recorded.
Results: Post keratoplasty, 43.4%, 78.9% and 96.1% of patients achieved a BCVA of 6/12 or better by 1, 3 and 6 months, respectively. The mean time to achieve a BCVA of 6/12 was 9.6 weeks. Only 5.3% of patients required a rigid gas permeable contact lens. Overall 42.4% of patients had unaided visual acuity of 6/12 or better at 12 months. The mean refractive cylinder and standard deviation was 2.78 ± 1.6 D, and the mean spherical equivalent was −1.12 ± 2.9 D. There were no significant intraoperative complications, and although 3.9% of eyes had at least one graft rejection episode there were no graft failures.
Conclusion: Penetrating keratoplasty is an effective method for treating advanced keratoconus. By 3 months almost all patients are able to achieve a BCVA of 6/12 or better with progressive improvement over time. This technique allows almost half of patients to achieve an unaided vision of 6/12 or better with sutures in situ.