Cornea
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To describe a post-LASIK patient with decreased vision and a chalazion of the upper eyelid. ⋯ In post-LASIK patients with decreased vision and topography changes late after surgery, periocular masses should be considered in the differential diagnosis. Decreased corneal thickness and rigidity after LASIK might be a predisposing factor to external compression-induced curvature changes.
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Randomized Controlled Trial Comparative Study Clinical Trial
Corneal sensation after topical anesthesia.
To compare the topical effects of tetracaine, lidocaine, and bupivacaine on corneal sensitivity in normal eyes. ⋯ The application of 4% lidocaine results in a significantly prolonged topical anesthetic effect when compared with tetracaine and bupivacaine.
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To determine the leading indications for penetrating keratoplasty and to identify changing trends in these indications during the past 12 years. ⋯ In this series, corneal scars, regraft, and acute necrotizing and ulcerative keratitis were the leading indications for penetrating keratoplasty. A changing incidence of pseudophakic and aphakic bullous keratopathy noted during the study period was related to the type of intraocular lens implanted and the method of cataract surgery performed. This study found a comparatively high frequency of acute necrotizing and ulcerative keratitis and an extremely low frequency of keratoconus compared with previous reports.
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To describe a case of successful treatment of a corneal perforation with 2-octyl cyanoacrylate. ⋯ We have described a case in which 2-octyl cyanoacrylate was used to treat a corneal perforation with excellent results. Further study of this adhesive will be useful in comparing the effectiveness and safety of 2-octyl cyanoacrylate with that of previously studied adhesives.
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To describe the characteristics, causes, treatment, and outcome, particularly the fate of the intraocular implant and visual acuity, of traumatic wound dehiscence occurring in patients who had penetrating keratoplasty (PK). ⋯ Traumatic wound dehiscence is not rare after PK. The elderly corneal transplant patient may be more prone to such an injury. Corneal rupture at the graft-host junction in all of our cases means the persistence of wound weakness after PK. Although graft survival and visual outcome are generally poor after the injury, the restoration of a satisfactory visual result is possible after regrafting, insofar as the involved eye is free of intractable glaucoma or posterior segment damage.