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The effect of local anesthetics on tear production


ECS Nwaji
GHO Barrah

Abstract

Local anesthetics act on any part of the nervous system and on every type of nerve and fibre. Different sensations are lost according to the size of the axon serving them. Lignocaine due to its moderate properties is one of the most versatile agents in anesthesia and as such is often used by optometrists and
ophthalmologists alike in different clinical procedures. Tear production using Schirmer's technique was measure before and after the instillation of a local anesthetic (Lignocaine 2%) in fifty (50) subjects of both male and female within the age range 18 -35 years. Results from data collected showed that Lignocaine caused a slight reduction in tear production; with a mean percentage reduction of 29.06%. Statistical analysis also revealed the effect of lignocaine on tear production to be significant (P<0.05).

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eISSN: 0795-0039
print ISSN: 0795-0039