| Literature DB >> 677249 |
Abstract
The tear-turnover rate of 68 normal human subjects (age range 15-63 yr) was determined using a slit lamp modified to serve as a fluorophotometer. Tear volume and tear secretion, computed from tear-turnover rate, had mean values of 8.47 microliter and 1.78 microliter/min, respectively. Analysis of the results shows a decrease in tear production with age. The mean tear-flow rate was 1.55 microliter/min in subjects aged 15-39 and 0.95 microliter/min in subjects aged 40-63. This fluorophotometer is adaptable to a clinical setting and may prove useful in diagnosis and treatment of anomalies of tear production.Entities:
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Year: 1978 PMID: 677249 DOI: 10.1097/00006324-197802000-00001
Source DB: PubMed Journal: Am J Optom Physiol Opt ISSN: 0093-7002