Binocular Indirect Ophthalmoscopy - Lecture 2

Question 1

Is the img affected by the patient’s refractive power?

Answer 1

No

Question 2

An advantage of BIO are they are great for eyes with what?

Answer 2

Nystagmus

Question 3

What age patients is BIO advantageous?

Answer 3

Children

Question 4

BIO allows for examination into where of the eye?

Answer 4

Far periphery

Question 5

BIO gives you a large what of the back of the eye?

Answer 5

Large field of view

Question 6

T/F: 2 advantages of BIO is that it’s portable and has stereopsis

Answer 6

True

Question 7

Disadvantages of BIO

Answer 7

• difficult to learn
• less magnification (details of small lesion not visualized properly)
• impossible with very small pupils
• more uncomfortable for some patients

Question 8

When the view is changed from one part of the fundus to the next, what must the entire img system do?

Answer 8

Rotate along an axis that is centered at the patient’s pupil

Question 9

How must the observer move his head and tilt the lens?

Answer 9

Simultaneously

Question 10

Minor deviations from perfect axial alignment of the condensing lens may be intentionally performed for what reason?

Answer 10

To bring out parallactic movements of objects in the fundus

Question 11

When scanning the fundus, the entire img system rotates along an axis centered where?

Answer 11

At the pt’s pupil

Question 12

What finger do you use as a pivot point?

Answer 12

Middle

Question 13

2 advantages of having a set order to the examination (systematic approach)

Answer 13

1) minimizing the risk of overlooking any area of the ocular fundus
2) aiding in the recall of the location of findings that are recorded at the conclusion of the examination

Question 14

What is the recommended approach for completing the exam on both eyes?

Answer 14

Complete right eye exam before beginning on the left

Question 15

What is usually measured before the posterior pole to allow the pt some time to light adapt?

Answer 15

Peripheral fundus

Question 16

The entire periphery may be inspected by examining how many meridians using what lens?

Answer 16

8 meridians

20D lens

Question 17

The BIO exam consists of scanning the 8 meridians how?

Answer 17

Radially from posterior to the equator out to the anterior limit of the ophthalmoscopically accessible fundus

Question 18

Exam is facilitated by standing now far from the meridian that you wish to examine?

Answer 18

180 degrees

Question 19

The entire posterior fundus can usually be encompassed in how many views?

Answer 19

One or two

Question 20

A single view where will give you a pretty good view of the posterior fundus?

Answer 20

Centered on the macula

Question 21

What two views are the alternate routes a for seeing the majority of the posterior fundus?

Answer 21

2 views with one concentrating on the area temporal to the macula and the other on the area nasal to it

Question 22

The fundus img views through the condensing lens is oriented how?

Answer 22

Inverted and reversed

Question 23

How do you indicate the location of retinal lesions?

Answer 23

• estimate the meridian in clock hours
• estimate the distance from the posterior pole or fundus landmarks such as the equator and the ora serrata in disc diameters

Question 24

From internal to external, what are the 3 fundus landmarks?

Answer 24

Equator
Ora serrata
Pars plana

Question 25

A patient is looking down and to their nose. Examining right eye. You see the lesion in the superior temporal side of the lens. Where is the lesion located?

Answer 25

B/w ora serrata and equator, and inferior nasal

Question 26

A patient is looking down and away from their nose. Examining right eye. You see the lesion in the superior nasal side of the lens. Where is the lesion located?

Answer 26

B/w ora serrata and equator, and inferior temporal

Question 27

A patient is looking to their nose. Examining right eye. You see the lesion in the superior nasal side of the lens. Where is the lesion located?

Answer 27

B/w the ora serrata and the equator, and inferior nasal

Question 28

A patient is looking slightly down, but almost in forward gaze. Examining left eye. You see the lesion in the superior temporal side of the lens. Where is the lesion located?

Answer 28

Inside the equator, and inferior nasal

Question 29

A patient is looking down and away from their nose. Examining left eye. You see the lesion in the superior nasal side of the lens. Where is the lesion located?

Answer 29

B/w the ora serrata and the equator, and inferior temporal

Question 30

A patient is in forward gaze. Examining left eye. You see the lesion in the inferior nasal side of the lens. Where is the lesion located?

Answer 30

Inside the equator, and superior temporal

Question 31

A patient is in forward gaze. Examining right eye. You see the lesion in the superior temporal side of the lens. Where is the lesion located?

Answer 31

Inside the equator, and inferior nasal

Question 32

A patient is looking down and to their nose. Examining right eye. You see the lesion in the superior temporal side of the lens. Where is the lesion located?

Answer 32

B/w the ora serrata and the equator, and inferior nasal

Question 33

A patient is in forward gaze. Examining right eye. You see the lesion in the inferior nasal side of the lens. Where is the lesion located?

Answer 33

Inside the equator, and superior temporal

Question 34

A patient is in forward gaze. Examining right eye. You see the lesion in the superior nasal side of the lens. Where is the lesion located?

Answer 34

Inside the equator, and inferior temporal

Question 35

A patient is in forward gaze. Examining right eye. You see the lesion in the inferior temporal side of the lens. Where is the lesion located?

Answer 35

Inside the equator, and superior nasal