May 2007
Volume 48, Issue 13
Free
ARVO Annual Meeting Abstract  |   May 2007
Visual Outcomes of Deep Anterior Lamellar Keratoplasty Using Tissue Unsuitable for Penetrating Keratoplasty
Author Affiliations & Notes
  • A. Day
    Mayday University Hospital, Croydon, United Kingdom
  • W. Ayliffe
    Mayday University Hospital, Croydon, United Kingdom
  • M. Bland
    University of York, York, United Kingdom
  • Footnotes
    Commercial Relationships A. Day, None; W. Ayliffe, None; M. Bland, None.
  • Footnotes
    Support None.
Investigative Ophthalmology & Visual Science May 2007, Vol.48, 4697. doi:
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      A. Day, W. Ayliffe, M. Bland; Visual Outcomes of Deep Anterior Lamellar Keratoplasty Using Tissue Unsuitable for Penetrating Keratoplasty. Invest. Ophthalmol. Vis. Sci. 2007;48(13):4697.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose:: To describe the visual and refractive outcomes of deep anterior lamellar keratoplasty (DALK) performed for visual rehabilitation using donor tissue suitable or unsuitable for penetrating keratoplasty (PKP).

Methods:: An observational study of 84 consecutive elective DALK procedures performed for visual rehabilitation. Donor tissue was suitable (31 cases) or unsuitable (53 cases) for PKP.

Results:: Both groups were comparable before surgery with no statistically significant difference in age at time of surgery, sex, indication for surgery, time of follow-up or preoperative visual acuity. The pre-operative best average best-corrected visual acuity (BCVA) was 1.02 (±0.66SD) logMAR (20/209 Snellen) in cases with tissue suitable for PKP and 1.20 (±0.66SD) logMAR (20/317 Snellen) in cases with tissue unsuitable (p=0.3).Average BCVA at 12 months was 0.24 logMAR (±0.24SD) (20/35 Snellen) with tissue suitable for PKP and 0.26 (±0.26SD) logMAR (20/36 Snellen) with tissue unsuitable for PKP (p=0.6) Mean post-operative spherical equivalent was -3.42 (±2.98SD) in those with donor tissue suitable for PKP and -3.52 (±4.10SD) dioptres in those with donor tissue unsuitable for PKP. Mean post-operative refractive astigmatism was -3.8 (±2.20SD) dioptres in those with donor tissue suitable for PKP and -4.3 (±2.20SD) dioptres in those with donor tissue unsuitable for PKP. There were no statistically significant differences in refractive outcomes between the two groups.

Conclusions:: Visual results for deep anterior lamellar keratoplasty using donor tissue unsuitable for penetrating keratoplasty are equivalent to those using tissue, potentially increasing donor tissue availability.

Keywords: transplantation • cornea: clinical science • keratoconus 
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