The data suggest head lice resistance is present in many parts of England to over-the-counter products containing synthetic insecticides (permethrin, phenothrin and malathion). They further suggest that resistance is starting to develop to carbaryl in head lice in Leeds and that extensive use of this product would lead to significant resistance.

Sympathetic function was studied in 101 diabetic children and 102 age and sex matched control children, as part of a longitudinal study of the evolution of microvascular disease in the population of diabetic children and adolescents in Avon County. The median (range) age of the diabetic population was 13-5 (6-0-17.2) years, the duration of diabetes was 4 0 (0.4-13.9) years, and glycated haemoglobin (HbAl) was 10-9 (7-0-18-1)%.Pupillary adaptation in darkness, as an index of sympathetic neuropathy, was measured using a Polaroid portable pupillometer. Diabetic (r=-0.1). Eight (7/9%) diabetic and four (3-9%) control children were identified as having abnormal pupillary dilation in darkness. In comparison with the rest of the diabetic population, these diabetic children had longer diabetes duration and poorer glycaemic control.Polaroid pupillometry has demonstrated subclinical autonomic neuropathy in a population of diabetic children and adolescents. These abnormalities were related to poor metabolic control, long diabetes duration, and also to other indices of microvascular disease.

This study highlights the significant impact IOL opacification has on visual performance and experience, in particular glare and consequent impact on quality of life. The study shows that to quantify accurately the effect of IOL opacification on vision glare must be assessed.

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