A STAND, developed at this hospital, for holding the donor eye while a corneal graft is trephined and dissected is particularly useful for lamellar, annular, or segmental grafts, especially where direct sutures are used (Fig. 1). Essentially this is a modified Tudor-Thomas stand, so designed as to rotate on a plinth carrying a spring-loaded metal ball (Fig. 2A), which engages consecutively into...

BACKGROUND Steam sterilization is an essential part of infection prevention. The literature shows that sterilization of medical instruments containing channels is not trivial. Phaco hand pieces have a simple configuration: a device contains a channel with a constant radius. No literature was found indicating whether the sterilization conditions on the inner surface of a phaco hand piece are inf...

Steam under subatmospheric pressure at temperatures below 90 degrees C. rapidly killed nonsporing organisms after air had been removed by a high-vacuum pump. Most bacterial spores were killed but small proportions of the populations were very resistant. The destruction of spores was not logarithmic. The addition of formaldehyde vapour to the steam greatly increased its sterilizing power, with d...

Introduction Sterilizing grade venting filters are used to avoid the potential risk of airborne germs contaminating containers like fermentors or cell-culture vessels. Sterilizing grade filtration can only be guaranteed when the filters used are tested for integrity. Therefore , such filters are routinely tested by the bubble point or similar tests. Depending on the program settings and the act...