Biomedical subjects

A S Narita

Publications and source records attributed to A S Narita.

5 recordsLinked to original sources

PubMed1997

Eye injuries caused by elasticated "octopus" straps.

"Octopus" elasticated straps are a common cause of severe accidental eye injuries, which we believe are largely preventable. In a retrospective study (January 1990 to August 1996), we identified 42 patients with such injuries severe enough to warrant admission to hospital. The injuries included hyphaema, vitreous haemorrhage, retinal detachment, and choroid and globe rupture, with 28% (12/42) of the injuries resulting in permanent visual loss. We believe octopus straps should not be available for sale in their current form.

Adolescent↗

PubMed1997

Eye movement abnormalities in a case of Tourette syndrome.

Tourette syndrome (TS) is a neuropsychiatric disorder that is characterised by the presence of multiple vocal, facial, and motor tics which change with time, and a number of other behavioural phenomena. Previous studies have not revealed any ocular-motor abnormalities. We report the eye movement studies of a patient with TS, using electrooculography and simultaneous video recording. Intrusive saccades occurred during smooth pursuit and optokinetic nystagmus. Reflexive and voluntary saccades were dysmetric and there was a complete failure of antisaccades. These abnormalities are characteristic of disease of the frontal lobes and basal ganglia. We review the literature with respect to the eye movement abnormalities associated with TS.

Adolescent↗

PubMed1996

Bilateral epiretinal membranes: a new finding in Hunter syndrome.

Hunter syndrome or Type II mucopolysaccharidosis is a rare disorder of mucopolysaccharide metabolism. We report the cases of two brothers with Hunter syndrome with the previously undocumented ocular finding of bilateral epiretinal membranes. Epiretinal membranes are an uncommon finding in the paediatric age group.

Adolescent↗

PubMed1994

Ocular migraine in an eight-year-old girl.

BACKGROUND: A case of ocular migraine in an eight-year-old girl is presented. This is believed to be the youngest reported patient with ocular migraine. CONCLUSION: The choroid was noted to darken during an episode of visual loss, suggesting choroidal ischaemia as the cause of the visual loss.

Child↗

PubMed1993

Blindness in the tropics.

Blindness is a major problem in most developing countries. It occurs at ten times the rate seen in the developed countries and in over 80% of cases is either preventable or curable. The four main causes are cataract, trachoma, onchocerciasis and xerophthalmia. Cataract, which is responsible for half the blindness, can be effectively cured with modern cataract surgery. Trachomatous blindness follows frequent episodes of reinfection, which can be prevented by simple hygienic measures. Onchocerciasis can be halted by the simple administration of a once-a-year dose of ivermectin, a drug which is currently being provided at no cost to all those with this infection. Vitamin A deficiency, which causes xerophthalmia, can be prevented by vitamin A distribution programs or dietary education. The challenge is to deliver these interventions effectively in the areas of need.

Africa↗