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Contact Lens Theory > Week 2 - Quiz Review > Flashcards

Week 2 - Quiz Review Flashcards

1
Q

What is the corneal astigmatism for these K readings? 41.75/44.25@090

A

2.50D (difference between the K readings)

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2
Q

What is the corneal astigmatism for these K readings? 47.00/44.00@090

A

3.00D (difference between the K readings)

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3
Q

What is the corneal astigmatism for these K readings?
43.50/44.75@090

A

1.25D(difference between the K readings)

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4
Q

What is the corneal astigmatism for these K readings?
45.00/46.75@090

A

1.75D(difference between the K readings)

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5
Q

What is the corneal astigmatism for these K readings?
40.25/42.25@090

A

2.00D(difference between the K readings)

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6
Q

What does SOAP stand for?

A

subjective
objective
assessment
plan

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7
Q

What part of the eye does the keratometer measure?

A

Corneal apex

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8
Q

Name the 5 direct slit lamp illuminations.

A

Diffuse
Specular Reflection
Parrallelpiped
Optic Section
Conical Beam

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9
Q

A patient tells you they have allergies. What cateogory of SOAP does this fall under?

A

Subjective

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10
Q

Documenting the reasoning behind your findings, what categories of SOAP does this fall under?

A

Assessment

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11
Q

What is another name for a slit lamp?

A

Biomicroscope

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12
Q

What is the method of illumination for Parallelpiped?

A

Direct

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13
Q

If the K reading is 40.00 (flat) and you want to fit as flat as possible. What base curve would be ideal from the two listed below? 8.3mm or 8.6mm

A

8.6mm

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14
Q

With the use of the slit lamp a practitioner is able to detect cataracts. T/F

A

TRUE

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15
Q

Which illumination is observed with the naked eye to see corneal clouding?

A

Sclerotic Scatter

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16
Q

You provided your px with an educational pamplet on proper contact lens cleaning regimes. What categories of SOAP does this fall under?

A

Plan

17
Q

When performing a FBUT evaluation with flurorescein what filter must be used?

A

Cobalt blue filter

18
Q

Is sclerotic scatter used to detect polymegathism?

A

No

19
Q

Name 4 objective tests used in a contact lens fitting.

A

VA
Keratometry
TBUT
Slit lamp
Observations
Contact lens evaluation

20
Q

A slit lamp is used to assess the different layers of the cornea. T/F

A

TRUE

21
Q

The slit lamp assessment can be performed on the anterior and posterior segment of the eye. T/F

A

TRUE

22
Q

What is the first step when using a keratometer?

A

Wash Hands

23
Q

Diffuse slit lamp illumination allows CLF to get an overview of the cornea. T/F

A

TRUE

24
Q

What are the 3 indirect illuminations?

A

Indirect Proximal
Retro - illumination
Sclerotic scatter

25
Q

What is the first assessment done during a contact lens fit?

A

VA - visual acuity

26
Q

Which illumination is used to check aqueous flare?

A

Conical Beam

27
Q

Identify the cornea as steep, medium or flat based on the K reading: 44.25/44.75 @090

A

Medium

28
Q

A person with diabetes can or cannot be fitted with Contact Lenses?

A

Contact lenses are indicated so can be fitted

29
Q

45.50/47.00@090 Is this with the rule or against the rule astigmatism?

A

With the rule -steepest K is in the vertical

30
Q

What are the uses for a diffuse illumination? 5

A

-Overall view
-Corneal scarring, infiltrates, neo-vascularizarion
-Edema of epithelium
-Lids, lashes, caruncle, scleral vessels
-meibomina glands

31
Q

What are the uses for parallelepiped illumination? 6

A
  • broad view of anterior and posterior surfaces
    -anterior surface irregularities
  • stroma
    -endothelium/ straie formations
    -scars, abrasions, folds in descemet’s membrane
    -Contact lens fit
32
Q

What are the uses for a Optic Section illumination? 6

A

-Corneal Layers
-Contact lens fit
-depth of foreign bodies
-crystalline lens
-anterior chamber and its angle
-aqueous flare

33
Q

What are the uses for a Conical Beam illumination? 4

A

-aqueous flare
-red blood cells
-white blood cells
-debris floating in anterior chamber

34
Q

What are the uses for Specular Reflection illumination? 4

A

-mucus secretion
-precorneal fluid
-tear layer assessment
-contact lens fit

35
Q

What are the uses for Indirect Proximal Illumination? 4

A

-study iris
-vesiculation
-view of outer rim of the iris
-ghost vessels

36
Q

What are the uses for Retro Illumination? 5

A

-scars
-pigments
-neo-vascularization
-edema of epithelium
-corneal precipates

36
Q

What are the uses for Sclerotic Scatter? 4

A

-Corneal clouding observed by the naked eye
-contact lens in place
-corneal scars
-macula, deposits or pigmented area

Contact Lens Theory (27 decks)

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