RESUMO
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.
Assuntos
Córnea/patologia , Doenças da Córnea/etiologia , Substância Própria/cirurgia , Cirurgia da Córnea a Laser/efeitos adversos , Miopia/cirurgia , Adulto , Astigmatismo/diagnóstico por imagem , Astigmatismo/cirurgia , Córnea/diagnóstico por imagem , Doenças da Córnea/diagnóstico por imagem , Paquimetria Corneana , Topografia da Córnea , Dilatação Patológica/diagnóstico por imagem , Dilatação Patológica/etiologia , Humanos , Masculino , Microcirurgia , Miopia/diagnóstico por imagem , Refração Ocular/fisiologia , Acuidade Visual/fisiologiaRESUMO
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.
Assuntos
Ceratomileuse Assistida por Excimer Laser In Situ/efeitos adversos , Lasers de Excimer/uso terapêutico , Miopia/cirurgia , Segmento Posterior do Olho/patologia , Descolamento do Vítreo/etiologia , Adulto , Feminino , Humanos , Masculino , Segmento Posterior do Olho/diagnóstico por imagem , Estudos Prospectivos , Refração Ocular/fisiologia , Ultrassonografia , Acuidade Visual/fisiologia , Descolamento do Vítreo/diagnóstico por imagem , Adulto JovemRESUMO
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.
