NBEO- Physiological Optics: Questions Answered With Expert Insight

NBEO- Physiological Optics: Questions Answered
With Expert Insight

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Terms in this set (340)



Which of the following is NOT true B (BIO has larger depth of focus)
when comparing BIO to Direct
Ophthalmoscopy?
A) BIO provides a larger field of view
than Direct Ophthalmoscopy
B) Direct Ophthalmoscopy has a
larger depth of focus than BIO
C) Direct Ophthalmoscopy has more
magnification than BIO
D) BIO provides a real, inverted image
E) Direct Ophthalmoscopy provides a
virtual, upright image


Does BIO or Direct Ophthalmoscopy BIO
form a real, inverted image?


Does BIO or Direct Ophthalmoscopy Direct Ophthalmoscopy
form a virtual, upright image?


What is the equation for manual x = f^2 Fv
Lensometry? x= distance target is moved (m), if target is moved
away from doctor then x= (-)
f= focal length of standard lens (m)
Fv= Back vertex power

,If the center of the cross hairs falls to A) BI
the right of the center of the bulls-eye
during lensometry, what type of prism
is in the lens if you are measuring the
right eye?
A) BI
B) BO
C) BU
D) BD


Will a minus lens have "with" or With
"against" motion during hand
neutralization?


Will a plus lens have "with" or "against" Against
motion during hand neutralization?


What is the primary purpose of a B) Measures the base curve of RGP
Radiuscope?
A) Measures the sag
B) Measures the base curve of RGP
C) Measures the base curve of soft
lens
D) Measures the peripheral curves of
RGP


A Keratometer measures the central 3 mm
___________ mm of the cornea.


For Keratometry, the cornea acts as Convex mirror
which type of mirror? Convex or
Concave?

,What is the primary purpose of a Lens A) Measures the sag of a lens
Clock?
A) Measures the sag of a lens
B) Measures the base curve of RGP
C) Measures the base curve of soft
lens
D) Measures the peripheral curves of
RGP


Fundus lenses are often used in B and C
conjunction with a Slit Lamp during
posterior segment evaluation. Which
of the following is true regarding
fundus lenses used with Slit Lamp?
(Choose 2)
A) Higher powered fundus lenses
have greater magnification
B) Higher powered fundus lenses have
lower magnification
C) Higher powered fundus lenses
have increased field of view
D) Higher powered fundus lenses
have decreased field of view


Would you expect a +90D or +78D to +78D
have greater magnification when used
during Slit Lamp?


Would you expect a +90D or +78D to +90D
have a greater field of view when used
during Slit Lamp?


Which fundus lens has an approximate A) 60D
magnification of -1x when used with
slit lamp?
A) 60D
B) 78D
C) 90D

, Which of the following is NOT B (high velocity impact test)
included in a high mass impact test
according to ANSI Z87.1?
A) Pointed projectile
B) Fired 150 feet per second
C) 500g object
D) Object dropped from 50 inches


Which of the following is NOT C (high mass impact)
included in a high velocity impact test
according to ANSI Z87.1?
A) Steel ball
B) Fired 150 feet per second
C) 500g object
D) 0.25 inches in diameter


Which of the following is NOT a C (Infrared filters)
properly matched marking according
to ANSI standards for protective
eyewear?
A) "W" shade number --> welding
B) "U" scale number --> UV filters
C) "R" scale number --> Nuclear
Radiation filters
D) "L" number --> Visible filter


What is the typical shape of a A and D
meniscus lens? (Choose 2)
A) Convex front surface
B) Concave front surface
C) Convex back surface
D) Concave back surface


What is the equation for converting a 337.5/x
contact lens base curve in diopters -->
radius of curvature of BC in mm?