Assuntos
Traumatismos Oculares/epidemiologia , Adolescente , Adulto , Idoso , Criança , Pré-Escolar , Traumatismos Oculares/prevenção & controle , Traumatismos Oculares/terapia , Feminino , Georgia/epidemiologia , Promoção da Saúde , Humanos , Incidência , Lactente , Masculino , Pessoa de Meia-Idade , Sistema de Registros/estatística & dados numéricos , Fatores de RiscoRESUMO
Densitometric analysis of Scheimpflug photography of the lens has been examined as a function of pupil diameter in normal volunteers. On the basis of both the length of the lens waveform and the integral area under the curve of the lens waveform, there is a critical pupil diameter above which the waveform is unchanged. Below this critical diameter the waveform becomes distorted by shortening and a change in shape. The critical pupil diameter is between 6 and 6.5 mm. This result is of importance either in longitudinal studies, where the pupil diameter may not be reproducible, or in studies where other drugs are used which may prevent full pupil dilatation.
Assuntos
Cristalino/anatomia & histologia , Fotografação , Pupila/fisiologia , Adulto , Densitometria , Humanos , Pessoa de Meia-IdadeRESUMO
A 59-year-old man developed painless visual loss in his left eye over a one-year period, with rapid progression to blindness over three months. Ocular examination of the left eye revealed proptosis, marked optic disk pallor, dilated retinal veins, and congeries of vessels at the disk margin (opticociliary veins). His right eye was unremarkable. Fluorescein angiography and histopathologic examination confirmed the presence of opticociliary veins communicating between branches of the central retinal vein and the adjacent choroidal vasculature. Primary orbital optic nerve meningioma associated with opticociliary veins was diagnosed.
