Neurosciences News

De acuerdo a los científicos vinculados al proyecto, una investigación realizada en un gran grupo familiar del Brasil, con más de 300 miembros vivos, podría ayudar a clarificar algunos de los enigmas de la neuropatía óptica hereditaria de Leber.

Uma pesquisa desenvolvida em uma grande família brasileira com mais de 300 indivíduos pode ajudar a esclarecer alguns enigmas da neuropatia ótica hereditária de Leber, de acordo com cientistas envolvidos no projeto.

NEW YORK — A review by Pfizer of all post-marketing ocular event reports for sildenafil citrate found no evidence of increased risk of blindness among patients taking the drug, according to a press release from Pfizer.

Earlier and more aggressive treatment for optic neuritis may reduce permanent axonal injury and progressive disability in patients who develop multiple sclerosis, according to a review of published literature.

Adult patients who suffered optic nerve damage as children can experience delayed, gradual vision loss due to age-related axonal loss in an already depleted population of neurons, three case reports suggest.

A secondary cause of optic nerve damage in patients with blepharoplasty may be perioperative posterior ischemic optic neuropathy leading to visual loss, according to a case study. Optic nerve damage may include compromised small arteries perfusing the optic disc because of a direct mechanical compression and a probable vasoconstrictive activity of the anesthetic agent, the study authors said.

Reports that a rare side effect of two popular erectile dysfunction drugs may cause permanent blindness are now being investigated by the Food and Drug Administration, according to news sources.

The presence of posterior embryotoxon should prompt a careful examination for signs of glaucoma, and children with the condition should be assessed for systemic abnormalities, English researchers suggest.

FORT LAUDERDALE, Fla. — Patients with Parkinson’s disease should receive visual field and ocular functional tests, a researcher speaking here advised.

It is important for ophthalmologists to recognize certain symptoms when diagnosing the cause of diplopia, Andrew G. Lee, MD, told attendees at Hawaii 2005, The Royal Hawaiian Eye Meeting. He made a presentation on diagnosing and treating patients with diplopia.