PURPOSE To study acquired color vision and visual field defects in patients with ocular hypertension (OH) and early glaucoma. METHODS In a prospective study we evaluated 99 eyes of 56 patients with OH without visual field defects and no hereditary color deficiencies, followed up for 4 to 6 years (mean = 4.7 +/- 0.6 years). Color vision defects were studied using a special computer program for...

Four cases are described in which visual field defects followed enlargement of the third ventricle. Three were due to aqueduct stenosis while in one case a left cerebellar hemisphere tumour was discovered. The visual field defects comprised a unilateral scotoma, bilateral scotomata and, in two patients, incongruous bitemporal hemianopia.

The automated recognition of the visual field defect type from results of visual field testing is crucial for the adequate diagnosis and treatment of the underlying disease of the visual system. This paper presents a reliable rule-based classifier that emulates the decision strategies of expert ophthalmologists based on a two-level approach that combines methods of unsupervised learning.

The prevalence of visual defects at ages 7 to 9 in 1485 children of birthweight 2000 g or less is reported. These children were born in 1970, 1971, and 1973 to parents resident in what is now the South East Thames Regional Health Authority area, and comprise 73.9% of all survivors of births of this weight, 81% of those whose present address is known. Only 16 (1%) children were reported to have ...

The introduction of bromocriptine (2-brocergocryptine mesylate), a semi-synthetic ergot alkaloid, has revolutionised the treatment of the amenorrhoeagalactorrhoea syndrome due to excessive prolactin secretion (Thorner et. al., 1975). In a significant number of cases, this hyperprolactinaemia is caused by a radiologically obvious pituitary tumour (L'Hermite et. al., 1977; Bergh et al., 1978 a) w...

PURPOSE We sought to determine whether visual field abnormalities occur in infants with deformational posterior plagiocephaly and to assess whether there is a relationship between the severity and laterality of visual field abnormalities with the severity and laterality of skull deformity. METHODS A retrospective chart review was performed on 40 consecutive infants with deformational posterio...

OBJECTIVE To estimate the prevalence of visual field defects in patients taking the anticonvulsant drug vigabatrin and to characterise the features of visual dysfunction found. METHODS Thirty three unselected patients attending neurology and epilepsy clinics were identified as taking vigabatrin and asked to attend for neuro-ophthalmic evaluation. A control group of 16 patients with epilepsy u...