ABSTRACT
AIM: To compare the outcomes of laser in situ keratomileusis (LASIK) performed with a femtosecond laser (Femtec, Technolas Perfect Vision GmbH, Germany) versus a mechanical microkeratome (Hansatome, Bausch and Lomb, USA) for the correction of myopia and astigmatism. METHODS: In this retrospective study, patients who had undergone LASIK using the 80-kHz Femtec femtosecond laser were compared to age- and refraction-matched patients in whom the Hansatome microkeratome was used. Refractive and visual results 1 month and 3 months postoperatively, and complication rates were compared between the two groups. RESULTS: A total of 280 eyes were analyzed (140 in each group). At 3 months postoperatively in the Femtec vs Hansatome group, spherical equivalent refraction was within ±1.00D of emmetropia in 140 vs 138 eyes (P=0.498), the cylinder was within ±0.50D in 137 vs 139 eyes (P=0.622), and the UDVA was 20/20 or better in 136 vs 137 eyes (P=0.724), respectively. There was no statistically significant difference in the complication rates between the two groups (P=0.099). CONCLUSION: LASIK performed both with Femtec femtosecond laser and Hansatome microkeratome achieved satisfactory refractive and visual results at 3 months postoperatively, without significant differences in efficacy, safety, and complication rates between the two procedures.
ABSTRACT
BACKGROUND AND IMPORTANCE: Neuromuscular choristomas (NMCs) are rare benign tumors of the peripheral nerves. Although histopathological characteristics of this unusual lesion have been recognized, in this regard, neuroimaging findings have not been well described previously. We report the first intraconally located NMC affecting the oculomotor nerve, with histopathological and radiological characteristics. CLINICAL PRESENTATION: A 10-year-old girl presented with sudden-onset left temporal and retro-orbital pain. Magnetic resonance imaging scans demonstrated a small, capsulated, retro-orbital, intraconal solid lesion that was diagnosed as an atypical dermoid cyst preoperatively. The tumor was resected subtotally. Postoperatively, the patient became pain free, but ipsilateral ptosis and upward eye movement failure developed. Histologically, the lesion consisted of well-differentiated striated muscle fibers intermingled with mature nerve elements consistent with the NMC. CONCLUSION: Although intracranial NMCs need histological confirmation for diagnosis, neuroimaging might contribute to the preoperative diagnosis and management strategy of treatment. We report the first intraconal NMC, which should be considered in the differential diagnosis of intraorbital tumors.
Subject(s)
Oculomotor Nerve Diseases/pathology , Orbital Neoplasms/pathology , Rhabdomyoma/pathology , Child , Female , Humans , Oculomotor Nerve Diseases/surgery , Orbital Neoplasms/surgery , Rhabdomyoma/surgeryABSTRACT
Since the eye lacks lymphatic vessels, uveal melanomas primarily metastasize hematogenously. Here we report the case of a patient with ciliary body ring melanoma who developed lymph node metastases after a fistulating glaucoma operation. A 40-year-old female Caucasian patient presented with unilateral pigment dispersion. Pigment dispersion glaucoma was diagnosed and since the intraocular pressure could not be managed with topical medication, transscleral cyclophotocoagulation and two trabeculectomies had to be performed. Due to enlargement of the pigmented iris mass and cell deposits in the chamber angle, a ciliary body ring melanoma was presumed and the eye enucleated. Histology confirmed the diagnosis of "ciliary body ring melanoma". Six months after enucleation the patient presented multiple metastases including ipsilateral preauricular and submandibular lymph node metastases. The patient died two months later. Lymph node metastases arising from ciliary body melanomas are very rare. Tumor seeding through the trabeculectomy site into the bleb and then via conjunctival lymphatic vessels might be the crucial factor for this pathway of metastases. Therefore, in cases of unilateral pigment dispersion, malignancy should be excluded before fistulating operations are performed.
