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Contact Lens Manual > Biomicroscopy > Flashcards

Biomicroscopy Flashcards

1
Q

Another name for the slit lamp is

A. Biomicroscope
B. Phoropter
C. Optic Spherometer
D. Radius Gauge

A

Biomicroscope

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2
Q

The historical development of the slit lamp dates to

A. 1801
B. 1891
C. 1931
D. 1951

A

1891

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3
Q

A contact lens fitter uses the slit lamp to view all of the following EXCCEPT

A. The fundus
B. Corneal Scars
C. Corneal Neovascularization
D. The Conjunctiva

A

The Fundus

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4
Q

The slit lamp is used in evaluation of which fitting characteristic(s) of soft contact lenses?

A. Centration
B. Movement
C. Corneal Coverage
D. All of the Above

A

All of the Above

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5
Q

The two main parts of the biomicroscope are the

A. Microscope and chin rest
B. Microscope and the light source
C. Eyepiece and power drum
D. Light source and joy stick

A

Microscope and Light Source

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6
Q

Which magnification would be appropriate for performing a general survey of the eye at the beginning of a slit lamp examination?

A. 6x
B. 15x
C. 25x
D. 40x

A

6x

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7
Q

What angle will the beam and the microscope form during most illumination procedures?

A. 25°
B. 45°
C. 60°
D. 90°

A

45°

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8
Q

Which slit lamp illumination can be used without the aid of the microscope?

A. Specular Reflection
B. Sclerotic Scatter
C. Diffuse
D. Retro

A

Diffuse

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9
Q

Which slit lamp illumination is performed with the microscope placed precisely along the angle of reflected light from the eye?

A. Specular Reflection
B. Sclerotic Scatter
C. Optic Section
D. Diffuse

A

Spectacular Reflection

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10
Q

When diffuse illumination is used in conjunction with fluorescein, what filter should be employed?

A. Blue (ultraviolet light)
B. Red-Free (green light)
C. Diffuse
D. No filter (white light)

A

Blue (ultraviolet light)

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11
Q

When an optic section is used in conjunction with fluorescein, what filter should be employed?

A. Blue (ultraviolet light)
B. Red-Free (green light)
C. Diffuse
D. No filter (white light)

A

No filter (white light)

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12
Q

A spherical RGP lens fit on K shows fluorescein pooling under the superior and inferior portions of the contact lens, and a dark band of minimal fluorescein horizontally. What kind of astigmatism does this pattern represent?

A. With-the-Rule
B. Against-the-Rule
C. Residual
D. Oblique

A

With-the-Rule

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13
Q

A back toric rigid contact lens fir on K to conform to each corneal meridian will show a fluorescein pattern that is

A. Concentrated under the center of the lens
B. Concentrated under the edge of the lens
C. Evenly distributed
D. Vertically oriented

A

Evenly distributed

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14
Q

The most useful slit lamp illumination to view gross corneal edema from rigid lens wear is

A. Retro
B. Direct
C. Indirect
D. Sclerotic Scatter

A

Sclerotic Scatter

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15
Q

Which of the following is the most likely cause of 3 and 9 o’clock staining?

A. Inadequate blinking
B. Base curve too flat
C. DK of lens material too low
D. Base curve too steep

A

Inadequate blinking

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16
Q

What filter is used to improve detection of corneal vascularity?

A. White
B. Yellow
C. Blue
D. Green

A

Green

17
Q

The slip lamp illumination that gives an overall assessment of the contact lens fit, but no fine detail, is

A. Direct
B. Diffuse
C. Retro
D. Sclerotic Scatter

A

Diffuse

18
Q

What color filter enhances the fluorescein pattern behind a rigid lens containing a UV blocker?

A. Grey
B. Green
C. Red
D. Yellow

A

Yellow

19
Q

Tear break-up time is verified with what slit lamp illumination?

A. Indirect
B. Direct
C. Scatter
D. Retro

A

Direct

20
Q

Which of the following is an abnormal tear break-up time

A. 5 sec.
B. 15 sec.
C. 20 sec.
D. 30 sec.

A

5 sec.

21
Q

The green filter is used in conjunction with which slit lamp illumination?

A. Specular Reflection
B. Conical Beam
C. Indirect
D. Optic Section

A

Indirect

22
Q

The two slit lamp illumination that shows the entire contact lens, movement, and centration are

A. Ratio
B. Direct
C. Indirect
D. Diffuse

A

Direct and Diffuse

23
Q

The slit lamp illumination where a narrow beam of light bisects the corneal juncture (limbus) is

A. Oscillatory
B. Indirect Retro
C. Sclerotic Scatter
D. Transverse Axial

A

Sclerotic Scatter

24
Q

Staining at the inferior portion of the cornea of a soft lens wearer is usually cause by

A. Improper lens removal
B. A loose lens
C. A tight lens
D. A lens that is too large

A

Improper lens removal

25
Q

Under slit lamp evaluation with fluorescein, corneal areas that appear dark and do not hold stain during blinks are likely

A. Dry spots
B. Verucae
C. Puntates
D. Infiltates

A

Dry Spots

26
Q

With a rigid lens in place, a fluorescein pattern shows a narrow band of dark vertically, and pooling horizontally. This is indicative of

A. A spherical base curve on a spherical cornea
B. A spherical base curve on a with-the-rule toric cornea
C. A spherical base curve on an against-the-rule toric cornea
D. A toric base curve on a toric cornea

A

A spherical base curve on an against-the-rule toric cornea

27
Q

A normal tear break-up time is

A. Less than 5 seconds
B. 10-12 seconds
C. 6-7 seconds
D. Over 60 seconds

A

10-12 Seconds

28
Q

A rigid lens showing apical touch indicates a

A. Flat fit
B. Steep Fit
C. Large Fit
D. Small Fit

A

Flat Fit

29
Q

A rigid lens showing apical pooling indicates a

A. Flat fit
B. Steep Fit
C. Large Fit
D. Small Fit

A

Steep Fit

30
Q

An hourglass fluorescein pattern with an RGP lens fit for K indicates

A. A steep fit
B. A flat fit
C. With-the-rule astigmatism
D. Against-the-rule astigmatism

A

Against-the-rule astigmatism

31
Q

For most illuminations the angle between the beam and the scope is about

A. 30°
B. 45°
C. 90°
D. 75°

A

45°

32
Q

The slit lamp beam is placed behind the area being studied with what illumination?

A. Retro
B. Indirect
C. Sclerotic Scatter
D. Diffuse

A

Retro

Contact Lens Manual (11 decks)

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