A possible reason for the lack of symptoms in aged eyes with low tear stability.
Explore the source record for details and available documents.
Biomedical subjects
Publications and source records attributed to J C Farrell.
Explore the source record for details and available documents.
For several years it has been known that the production rate of tears declines as age increases. Reports suggest that this reduction is more apparent in females than in males. Using a noninvasive method we report that a significant linear reduction in precorneal tear film stability occurs between the ages of 8 and 80 years. However, we found no significant differences in tear film stability between males and females.
The stability of the precorneal tear film as inferred from the tear thinning time (TTT) appears to vary over a single 12-h period. The form of this variation is subject dependent. For the average patient the stability is low early in the morning, and tends to rise to equilibrium level between 10:00 a.m. and 12 noon.
The experience of 31 patients with primary adrenal tumours seen in one teaching hospital over a 10-year period is reviewed. There were 10 patients who had benign cortical adenomas; 11 had adrenal cortical carcinomas, and 10 had phaeochromocytomas, one of which was malignant. During the review period, a primary adrenal mass was discovered in 5% of 2951 autopsies performed in the study institution. The diagnosis and management of these uncommon tumours is reviewed.
Explore the source record for details and available documents.