Patients with lower original and residual myopia achieved better visual outcomes after PRK than those with higher myopia. The amount of myopic correction achieved using RK was not predictive of the amount of myopic correction using PRK.
Transplanted corneal epithelial stem cells were able to differentiate into normal corneal epithelium in vivo without the use of membrane scaffolding. This non-autologous donor cell-derived corneal epithelium survived up to 8 months without immunosuppression and was able to reverse the stromal scarring. Thus, cultivated epithelial stem cells have great potential as an alternative to multiple-surgical procedures in the treatment of limbal deficiency states.
Corneal findings of PDS do not appear to affect the intraoperative or postoperative outcomes of LASIK. However, patients who have PDS in the context of glaucoma and therapy with an intraocular-pressure-lowering agent may experience delayed healing and a less predictable visual outcome.
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