The authors studied bacterial agent transmission in 76 eyes of 76 patients
through use of the Goldmann tonometer and the Goldmann 3-mirror lens. Bacte
rial growth was observed in 47 (61.8%) cultures from conjunctival swabs and
in 32 (42.1%) cultures from corneal contact instruments. The data demonstr
ate that a careful disinfection of these instruments is indispensable in pr
eventing bacterial agent transmission.