RESUMEN
Unilateral corneal ectasia developed after small-incision lenticule extraction for mild myopia in a 43-year-old man with preoperative asymmetric astigmatism. The ectasia was diagnosed 4 years postoperatively. Preoperative data showed asymmetric astigmatism with no signs of forme fruste keratoconus. Inferior anterior curvature steepening exceeded 2.00 diopters without bulging of the posterior curvature, and pachymetric thickness exceeded 515 µm. Corneal ectasia can occur after small-incision lenticule extraction in patients older than 40 years with preoperative asymmetric astigmatism.
Asunto(s)
Córnea/patología , Enfermedades de la Córnea/etiología , Sustancia Propia/cirugía , Cirugía Laser de Córnea/efectos adversos , Miopía/cirugía , Adulto , Astigmatismo/diagnóstico por imagen , Astigmatismo/cirugía , Córnea/diagnóstico por imagen , Enfermedades de la Córnea/diagnóstico por imagen , Paquimetría Corneal , Topografía de la Córnea , Dilatación Patológica/diagnóstico por imagen , Dilatación Patológica/etiología , Humanos , Masculino , Microcirugia , Miopía/diagnóstico por imagen , Refracción Ocular/fisiología , Agudeza Visual/fisiologíaRESUMEN
PURPOSE: To analyze the modifications to the vitreous body after femtosecond laser-assisted laser in situ keratomileusis (LASIK) for myopia. SETTING: Centre Hospitalier National Des Quinze-Vingts, Paris, France. DESIGN: Case series. METHODS: B-scan ultrasonography of the posterior ocular segment was performed the day before and 48 hours after femtosecond LASIK for myopia. Posterior vitreous detachment (PVD) was diagnosed by the presence of a low-reflected mobile echogenic membrane partially or completely detached from the retina. Eyes with signs of partial or total PVD on preoperative examination were excluded. Occurrence of total or partial PVD after surgery was the main outcome measure. RESULTS: Thirty-one eyes of 18 patients (10 women; mean age 28 years ± 5 [SD]) were included in the study. The mean preoperative spherical equivalent was -4.38 diopters (D) (range -2.88 to -6.75 D). After surgery, 5 eyes (16%) developed partial or total PVD. The remaining 26 eyes had no signs of PVD postoperatively. CONCLUSION: Although less vacuum is required to create a corneal flap with a femtosecond laser than with a conventional microkeratome, the incidence of PVD after femtosecond laser-assisted LASIK was similar to that reported for microkeratome-assisted LASIK.
Asunto(s)
Queratomileusis por Láser In Situ/efectos adversos , Láseres de Excímeros/uso terapéutico , Miopía/cirugía , Segmento Posterior del Ojo/patología , Desprendimiento del Vítreo/etiología , Adulto , Femenino , Humanos , Masculino , Segmento Posterior del Ojo/diagnóstico por imagen , Estudios Prospectivos , Refracción Ocular/fisiología , Ultrasonografía , Agudeza Visual/fisiología , Desprendimiento del Vítreo/diagnóstico por imagen , Adulto JovenRESUMEN
Renin-secreting tumours are rare tumours. The authors report a case of renin-secreting tumour discovered during investigation of HT associated with hypokalaemia and secondary hyperaldosteronism and recall the main clinical, laboratory, and radiological characteristics of this tumour, as well as its treatment.