Year 1 Week 12

Question 1

Diffuse Magnification

Answer 1

Low - 6 to 10

Question 2

Diffuse uses

Answer 2

General Overview of the eye and Adnexa

Question 3

Optic section Magnifcation

Answer 3

Low to High - 6 to 40

Question 4

Optic section Uses (4 marks)

Answer 4

1) Cataracts
2) Blood vessels
3) Infiltrates
4) Nerve fibres

Question 5

Parallel piped magnification

Answer 5

Low to high - 6 to 40

Question 6

Parallel piped uses (2 marks)

Answer 6

1) Punctate keratitis
2) corneal nerve fibres

Question 7

Conical Beam Angle

Answer 7

40 to 60 degrees

Question 8

Conical Beam Magnification

Answer 8

Medium 16-25

Question 9

Conical Beam uses (1 mark)

Answer 9

Infection

Question 10

What effect do you get with a conical beam?

Answer 10

Tyndall effect - WBC indication

Question 11

In-direct is coupled or de-coupled?

Answer 11

DE-COUPLED - same technique as parallel piped from side

Question 12

In-direct uses (4 marks)

Answer 12

1) Iris Sphincter
2) Iris Pathology
3) Epithelial vesicles
4) Epithelial Erosion

Question 13

Retro-illumination Magnification

Answer 13

Medium to high - 16 to 40

Question 14

Retro-illumination uses (5 marks)

Answer 14

1) Microcysts
2) vacuole
3) Opacities
4) contact lens
5) vascularisation

Question 15

Important fact about specular reflection

Answer 15

Angle of illumination = angle of reflection

Question 16

What to do with purkinje image

Answer 16

Line up illumination on it

Question 17

Specular reflection magnification

Answer 17

Medium to high - 16 to 40

Question 18

Specular reflection uses (3 marks)

Answer 18

1) crystalline lens - orange peel
2) endothelium
3) Tear film

Question 19

Sclerotic scatter magnification

Answer 19

Low - 6 to 10

Question 20

Sclerotic scatter uses (3 marks)

Answer 20

1) corneal opacity
2) oedema
3) foreign body @ limbus