Laser safety UPDATED ACTUAL Exam
Questions and CORRECT Answers
Class 1 and 2 laser - CORRECT ANSWER - Used as aiming beams, will not cause eye or
tissue damage during normal operation
Class 3 and 4 laser - CORRECT ANSWER - Damage to eye, possible permanent vision
loss
Class 4 laser - CORRECT ANSWER - Energy level high enough to cause serious flesh
burns, and can ignite combustable material
Class 1 laser - CORRECT ANSWER - Not capable of producing damaging levels of
radiation under any viewing condition
Class 2 laser - CORRECT ANSWER - Continuous wave laser operating in 385 to 750nm
range
Class 2 laser - CORRECT ANSWER - Momentary unintentional exposure of less than
250ms not hazardous
Class 2A laser - CORRECT ANSWER - Class 1 laser that has protective housing removed
and installed into equipment
Class 3A laser - CORRECT ANSWER - Momentary unintentional exposure to beam not
considered hazardous when viewed with an unaided eye
Class 3A laser - CORRECT ANSWER - With optical focusing devise, injury is possible
, Class 3B laser - CORRECT ANSWER - Can cause eye and tissue damage even when
exposed momentarily
Class 3B laser - CORRECT ANSWER - Reflected beam can cause eye and tissue damage
Class 3B laser - CORRECT ANSWER - Reflected diffuse beam is not hazardous, will not
cause eye or tissue damage
Class 4 laser - CORRECT ANSWER - Are those pulsed or continuous wave lasers
Class 4 laser - CORRECT ANSWER - Reflected and diffused reflected beams are
hazardous, will cause eye or tissue damage
Class 4 laser - CORRECT ANSWER - Have an average power output greater than 0.5
watts
CDHR - CORRECT ANSWER - Center for Device and Radiological Health
Laser manufacturers must certify with - CORRECT ANSWER - Tittle 21 CFR 1040
CDHR adopted safe use of laser - CORRECT ANSWER - ANSI Z136.1
CDHR adopted safe use of medical lasers - CORRECT ANSWER - ANSI Z136.3
TB MED 524 - CORRECT ANSWER - Army regulation for non-ionising radiation
Laser Safety Comity - CORRECT ANSWER - Responsible to provide ongoing safety and
training to all personnel working with medical lasers
Questions and CORRECT Answers
Class 1 and 2 laser - CORRECT ANSWER - Used as aiming beams, will not cause eye or
tissue damage during normal operation
Class 3 and 4 laser - CORRECT ANSWER - Damage to eye, possible permanent vision
loss
Class 4 laser - CORRECT ANSWER - Energy level high enough to cause serious flesh
burns, and can ignite combustable material
Class 1 laser - CORRECT ANSWER - Not capable of producing damaging levels of
radiation under any viewing condition
Class 2 laser - CORRECT ANSWER - Continuous wave laser operating in 385 to 750nm
range
Class 2 laser - CORRECT ANSWER - Momentary unintentional exposure of less than
250ms not hazardous
Class 2A laser - CORRECT ANSWER - Class 1 laser that has protective housing removed
and installed into equipment
Class 3A laser - CORRECT ANSWER - Momentary unintentional exposure to beam not
considered hazardous when viewed with an unaided eye
Class 3A laser - CORRECT ANSWER - With optical focusing devise, injury is possible
, Class 3B laser - CORRECT ANSWER - Can cause eye and tissue damage even when
exposed momentarily
Class 3B laser - CORRECT ANSWER - Reflected beam can cause eye and tissue damage
Class 3B laser - CORRECT ANSWER - Reflected diffuse beam is not hazardous, will not
cause eye or tissue damage
Class 4 laser - CORRECT ANSWER - Are those pulsed or continuous wave lasers
Class 4 laser - CORRECT ANSWER - Reflected and diffused reflected beams are
hazardous, will cause eye or tissue damage
Class 4 laser - CORRECT ANSWER - Have an average power output greater than 0.5
watts
CDHR - CORRECT ANSWER - Center for Device and Radiological Health
Laser manufacturers must certify with - CORRECT ANSWER - Tittle 21 CFR 1040
CDHR adopted safe use of laser - CORRECT ANSWER - ANSI Z136.1
CDHR adopted safe use of medical lasers - CORRECT ANSWER - ANSI Z136.3
TB MED 524 - CORRECT ANSWER - Army regulation for non-ionising radiation
Laser Safety Comity - CORRECT ANSWER - Responsible to provide ongoing safety and
training to all personnel working with medical lasers
