Laser safety Exam Questions and
Answers
Class 1 and 2 laser - Correct Answers -Used as aiming beams, will not cause eye or
tissue damage during normal operation
Class 3 and 4 laser - Correct Answers -Damage to eye, possible permanent vision loss
Class 4 laser - Correct Answers -Energy level high enough to cause serious flesh burns,
and can ignite combustable material
Class 1 laser - Correct Answers -Not capable of producing damaging levels of radiation
under any viewing condition
Class 2 laser - Correct Answers -Continuous wave laser operating in 385 to 750nm
range
Class 2 laser - Correct Answers -Momentary unintentional exposure of less than 250ms
not hazardous
Class 2A laser - Correct Answers -Class 1 laser that has protective housing removed
and installed into equipment
Class 3A laser - Correct Answers -Momentary unintentional exposure to beam not
considered hazardous when viewed with an unaided eye
Class 3A laser - Correct Answers -With optical focusing devise, injury is possible
Class 3B laser - Correct Answers -Can cause eye and tissue damage even when
exposed momentarily
Class 3B laser - Correct Answers -Reflected beam can cause eye and tissue damage
Class 3B laser - Correct Answers -Reflected diffuse beam is not hazardous, will not
cause eye or tissue damage
Class 4 laser - Correct Answers -Are those pulsed or continuous wave lasers
Class 4 laser - Correct Answers -Reflected and diffused reflected beams are hazardous,
will cause eye or tissue damage
, Class 4 laser - Correct Answers -Have an average power output greater than 0.5 watts
CDHR - Correct Answers -Center for Device and Radiological Health
Laser manufacturers must certify with - Correct Answers -Tittle 21 CFR 1040
CDHR adopted safe use of laser - Correct Answers -ANSI Z136.1
CDHR adopted safe use of medical lasers - Correct Answers -ANSI Z136.3
TB MED 524 - Correct Answers -Army regulation for non-ionising radiation
Laser Safety Comity - Correct Answers -Responsible to provide ongoing safety and
training to all personnel working with medical lasers
Laser Safety Officer - Correct Answers -Responsible for operation or testing of non-
ionizing generating equipment
(ANSI Z136.3) Lasers that must have warning signs - Correct Answers -2, 3a, 3b, 4
Class 2 laser - Correct Answers -Caution, laser radiation, do not stare into beam
Class 3A laser - Correct Answers -Caution, laser radiation, do not stare into beam or
view directly with optical instrument
Class 3B laser - Correct Answers -Danger, laser radiation, avoid direct exposure to
beam
Class 4 laser - Correct Answers -Danger, laser radiation, avoid eye or skin exposure to
direct or scattered radiation
Warning labels must have - Correct Answers -type, wave length, maximum output,
pulse duration
X-rays, Gamma rays - Correct Answers -transmit through the eye, eye absorbs little
energy
Near-Ultraviolet - Correct Answers -absorbed by lens of eye
Near-Ultraviolet - Correct Answers -315-400nM
Near-Ultraviolet - Correct Answers -Causes distortion of lens cataracts
Visible, Near-Infrared - Correct Answers -focused on retina
Visible, Near-Infrared - Correct Answers -385-1400
Answers
Class 1 and 2 laser - Correct Answers -Used as aiming beams, will not cause eye or
tissue damage during normal operation
Class 3 and 4 laser - Correct Answers -Damage to eye, possible permanent vision loss
Class 4 laser - Correct Answers -Energy level high enough to cause serious flesh burns,
and can ignite combustable material
Class 1 laser - Correct Answers -Not capable of producing damaging levels of radiation
under any viewing condition
Class 2 laser - Correct Answers -Continuous wave laser operating in 385 to 750nm
range
Class 2 laser - Correct Answers -Momentary unintentional exposure of less than 250ms
not hazardous
Class 2A laser - Correct Answers -Class 1 laser that has protective housing removed
and installed into equipment
Class 3A laser - Correct Answers -Momentary unintentional exposure to beam not
considered hazardous when viewed with an unaided eye
Class 3A laser - Correct Answers -With optical focusing devise, injury is possible
Class 3B laser - Correct Answers -Can cause eye and tissue damage even when
exposed momentarily
Class 3B laser - Correct Answers -Reflected beam can cause eye and tissue damage
Class 3B laser - Correct Answers -Reflected diffuse beam is not hazardous, will not
cause eye or tissue damage
Class 4 laser - Correct Answers -Are those pulsed or continuous wave lasers
Class 4 laser - Correct Answers -Reflected and diffused reflected beams are hazardous,
will cause eye or tissue damage
, Class 4 laser - Correct Answers -Have an average power output greater than 0.5 watts
CDHR - Correct Answers -Center for Device and Radiological Health
Laser manufacturers must certify with - Correct Answers -Tittle 21 CFR 1040
CDHR adopted safe use of laser - Correct Answers -ANSI Z136.1
CDHR adopted safe use of medical lasers - Correct Answers -ANSI Z136.3
TB MED 524 - Correct Answers -Army regulation for non-ionising radiation
Laser Safety Comity - Correct Answers -Responsible to provide ongoing safety and
training to all personnel working with medical lasers
Laser Safety Officer - Correct Answers -Responsible for operation or testing of non-
ionizing generating equipment
(ANSI Z136.3) Lasers that must have warning signs - Correct Answers -2, 3a, 3b, 4
Class 2 laser - Correct Answers -Caution, laser radiation, do not stare into beam
Class 3A laser - Correct Answers -Caution, laser radiation, do not stare into beam or
view directly with optical instrument
Class 3B laser - Correct Answers -Danger, laser radiation, avoid direct exposure to
beam
Class 4 laser - Correct Answers -Danger, laser radiation, avoid eye or skin exposure to
direct or scattered radiation
Warning labels must have - Correct Answers -type, wave length, maximum output,
pulse duration
X-rays, Gamma rays - Correct Answers -transmit through the eye, eye absorbs little
energy
Near-Ultraviolet - Correct Answers -absorbed by lens of eye
Near-Ultraviolet - Correct Answers -315-400nM
Near-Ultraviolet - Correct Answers -Causes distortion of lens cataracts
Visible, Near-Infrared - Correct Answers -focused on retina
Visible, Near-Infrared - Correct Answers -385-1400
