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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)
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).
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.
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.
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.
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