A brief historical review of gonioscopy since the pioneering works published by Trantas and Salzmann is presented. The techniques of examination are described and the advantages and disadvantages of each one are discussed. Based on the classifications in the literature, a new one is proposed: the APIC classification. In this classification each one of the elements of the anterior chamber angle are graduated: A = anterior chamber angle Amplitude; P = Pigmentation; I = iris Implantation; and C = iris […]

The cornea has a great influence in the visual process. However, it is liable to distortion, such as flattening. When this flattening is caused by the use of contact lenses, we call “corneal warpage”. In this case, some symptoms may occur as blurred vision with glasses, conjunctival hyperemia, foreign body sensation, etc… Used to think that the cornea was more rigid and, in time, realized that the cornea has viscoelastic properties. We can say that the cornea has a body […]

Optical coherence tomography was progressively incorporated to the contemporary diagnostic arsenal in Ophthalmology, playing a crucial role in the diagnosis and management of eye diseases, particularly in the specialty of retina and vitreous. The commercial availability of the new generation of devices, coined “spectral” optical coherence tomography, which is based in a distinct physical concept that permits high-speed image acquisition, launched a new era for this investigative ancillary tool. In addition, the recent combination of this new technology with a […]

The purpose of this article is to review the data on the scientific literature on refractive lens exchange considering the advantages, disadvantages and the risks involved on this procedure, taking under consideration each type of ametropia.

The author presents his arguments to state that the Duane’s syndrome type III of the Huber’s classification does not exist. He takes the chance of those arguments to show why the medial rectus muscle recession in Duane’s syndrome with esotropia cripples the adduction more that it does in esotropias of other origins. He shows also why one must recess also the sound eye’s medial rectus in Duane’s syndrome with esotropia.

Purtscher’s retinopathy is a condition characterized by loss of vision within hours after an injury, especially thoracic. The term “Purtscher-like retinopathy” is used to describe a similar retinal appearance in a variety of conditions other than trauma. This condition have been reported in acute pancreatitis, lymphoproliferative disorders, chest compression, fat embolization, Valsalva maneuver, after retrobulbar anesthesia, and others. Fundus abnormalities include cotton-wool spots, retinal hemorrhage, non-capillary perfusion areas, and optic disk swelling. In this article we revise the ophthalmoscopic findings, […]

O autor expõe argumentos para afirmar que não existe a síndrome de Duane tipo III da classificação de Huber. Aproveitando esses argumentos, mostra por que o retrocesso do músculo reto medial em síndrome de Duane com esotropia prejudica a adução mais do que o faz em esotropias de outras origens. Mostra, também, por que se deve retroceder também o músculo reto medial do olho não afetado em síndrome de Duane com esotropia.