Cornea
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To describe the clinical results of Pentacam-based big bubble deep anterior lamellar keratoplasty (DALK) to achieve an intended 90% depth of initial lamellar trephination. ⋯ Pentacam-based big bubble DALK using a 90% intended depth of initial lamellar trephination seems to be a safe and effective procedure for anterior corneal stromal disorders such as keratoconus. We suggest that Pentacam-based depth assessment allows for reliably deep initial preparation and may allow more successful bubble formation in DALK surgery.
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To determine the prevalence of obstructive sleep apnea (OSA) in patients with keratoconus and evaluate the risk of developing OSA in this patient population. ⋯ Keratoconus patients have a higher prevalence of OSA compared with that accepted for the general population. A striking number of our patients without previous diagnosis of OSA seem to be at high risk for developing OSA, supporting our recommendation for a greater awareness among clinicians who might otherwise overlook this systemic condition and its consequences.
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To evaluate the efficacy and safety of subconjunctival injection of triamcinolone in the treatment of acute ocular alkali burn in rabbits. ⋯ Subconjunctival injection of triamcinolone may be a therapeutic option for the treatment of acute ocular burn because it reduced the corneal inflammatory process, opacity, and vascularization, with no apparent clinical changes in the general state of the animal.
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To demonstrate feasibility and present postoperative outcomes for femtosecond laser-assisted keratoplasty (FLAK) in the setting of previous failed conventional penetrating keratoplasty (PK) and previous open-globe trauma with corneal laceration. ⋯ FLAK is a feasible transplantation technique in the setting of previous failed PK and open-globe trauma with corneal laceration. Significant globe pressure associated with laser applanation did not cause rupture of old corneal wounds among our case series. Postoperative astigmatism is within previous reported limits in the literature under varying suturing techniques. Development of ocular hypertension within 1 year of follow-up was comparable with historically reported rates for PK in the setting of previous trauma and failed grafts.
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To evaluate the feasibility, safety, and efficacy of the use of 1 donor cornea for 2 recipients who required anterior lamellar and posterior lamellar keratoplasties, respectively. ⋯ Our study demonstrates that 1 donor corneal tissue can be successfully used for 2 patients as a routine practice with appropriate and optimal case selection. Such techniques may help to reduce the magnitude of corneal blindness in developing countries where there are shortages of donor corneal tissue.