Biomicroscopy

Question 1

What are four clinical uses (tests) that can be done using biomicroscopy?

Answer 1

• SLE, Tonometry, Gonio, 78/90D

Question 2

For Adnexa, what is the proper technique for gross abnormalities?
- What magnification is used for lid lesions?

Answer 2

• Look outside SLE for gross abnormalities

- Low Mag for lid lesions

Question 3

What is the SLE settings for Lids/Lashes (External Lids, Lid Margins)

(Light Setting, Mag, Angle, Filter)

Answer 3

• Diffuse, 6.3-10x, 30-45 degrees, 10% Grey Filter

Question 4

What is the SLE settings for Inferior Palpebral Conjunctiva, Bulbar Conj and Sclera

(Light Setting, Mag, Angle, Filter)

Answer 4

• Wide Paraellelpipe, 6.3-10x, 30-45 degrees, 10% Grey Filter

Question 5

What is the SLE settings for Cornea

Light Setting, Mag, Angle, Filter

Answer 5

• Narrow Paraellelpipe, 10-16x, 45-60 degrees, No Grey Filter

Question 6

What is the SLE settings for Van Herick Angles

Light Setting, Mag, Angle, Filter

Answer 6

• Optic Section, 10-16x, 60 degrees, No Grey Filter

Question 7

What is the Anterior Chamber to Angle ratio for 0-4+?

Answer 7

0 - No Shadow
1 - <1/4
2 - 1/4-1/2
3 - 1/2
4 - 1:1 ratio

Question 8

When nose gets in the way, what do you tell the patient to do?

Answer 8

• Move nose towards illumination arm

Question 9

What is the SLE settings for Iris

Light Setting, Mag, Angle

Answer 9

• Medium parallelpipe, 10-16x, 30-45 degrees

Question 10

What is the SLE settings for Lens

Light Setting, Mag, Angle, Filter

Answer 10

• Narrow parallelpipe, 10-16x, 20-30 degrees, No Grey Filter

Question 11

What is the SLE settings for Anterior Chamber (undilated and dilated)

(Light Setting, Mag, Angle, Filter)

Answer 11

Undilated: Moderate parallelpipe, 10-16x, 20-30 degrees

Question 12

What are cells and flares?

Answer 12

Cells: White blood cells
Flares: proteins, makes Anterior chamber look hazy

Question 13

If you have a blurry image, what are two things you can do to adjust the image

Answer 13

1) - focus oculars monocularly

2) - check if lens inside microscope is fogged up

Question 14

What are four things that can be done if you see dipolopia with the SLE?

Answer 14

• Readjust PD
• Refocus oculars
• Check illumination arm
• Check to see if you have a binocular vision disorder