Unit 3

Question 0

Direct:

Direct focal/parallepiped

Answer 0

Detecting vertical striae.
Opacities and infiltrators
Corneal staining
Deposits and scratches

Question 1

Direct:

Diffuse

Answer 1

Overall image of the cornea, sclera, and lids
Observing fluorscein patterns.
B.U.T. Testing

Question 2

Direct:

Optic section

Answer 2

Used to determine which layers of the cornea is involved.
Corneal thickness & scarring
Irregular topography

Question 3

Direct:

Conical Beam

Answer 3

Small dot of light.

debris, cornea, iris, lens, vitreous

Question 4

Direct:

Specular Reflection

Answer 4

Best used to view Endothelium

Views
Hazy lens, fine epithelial edema, surfaces of the crystalline lens.

Question 5

Indirect:

Proximal/Indirect

Answer 5

Observing opaque bodies, lids, lashes, scleara, conjunctiva, and pinguecula.

Question 6

Retro:

Direct/Indirect

Answer 6

Backlights
Qualities
Edemas, myocysts, deposits on CL, neurovascular.

Question 7

Indirect:

Sclerotic Scatter

Answer 7

General patterns or opacities

Disturbances in normal corneal transparencies

Question 8

Indirect:

Tangential

Answer 8

Surface textures

Anterior/posterior cornea, iris, anterior lens

Question 9

What type of light is used for dyes (fluorescein)?

Answer 9

Cobalt light

Question 10

Rose Bengal?

Answer 10

Stains unhealthy cells

Question 11

Which slit-lamp filter should be used to observe neovascularization?

Answer 11

Red free