•Type of protection against electric shocks: Type B applied part
Type B applied part is the applied part complying with the specified requirements of the
Standard IEC 60601-1 to provide protection against electric shock, particularly regarding
allowable LEAKAGE CURRENT.
•Type of protection against electric shocks: Class I equipment
Class I equipment does not depend on basic insulation only for protection against electric
shocks. It can also be earthed; therefore, the metal parts with which one comes into contact
do not become conductive if the basic insulation fails.
•The mode of operation: continuous operation equipment
•Degree of protection against ingress of water: IP×0
OM-4 is the ordinary instrument (enclosed instrument without protection against ingress of
•Methods of sterilization or disinfection recommended by the manufacture: OM-4 does not
have any part to be sterilized or disinfected.
•Not AP or APG equipment
PURPOSE OF USE
This instrument is used to measure the radius of curvature of the cornea.
It displays the corneal refractive power according to the above measurement result. It is also
used to measure the base curve of contact lens.
Projects the measurement index to the cornea and measures the radius of curvature of the cor-
nea according to the corneal reflected image.