Wk 3 Eye Labs & Diagnostics

Question 1

What is the name of this test?

Answer 1

Visual acuity test (Snellen chart)

Question 2

What does 20/50 mean on the Snellen chart?

Answer 2

Patient can see at 20 feet what the healthy eye can see at 50 feet

Question 3

How far away from the chart do you have the patient stand for the Snellen chart test?

Answer 3

20 feet

Question 4

If a provider opts to use a eye chart/pocket chart, how far away from the patient’s face should it be held?

Answer 4

14 inches

Question 5

Who is a candidate for a visual acuity test?

Answer 5

Routine screening

Cataracts

Retinal detachment

Question 6

What type of scope allows the provider to view the fundus of the eye?

Answer 6

Ophthalmoscope

Question 7

What is included in the fundus of eye? (5)

Answer 7

Red reflex

Optic disc

Optic blood vessels

Fundus

Macula

Question 8

How is a ophthalmoscope used?

Answer 8

Darken room to dilate pupil

Move in from 12-15 inches away from the side of the patient’s line of vision

Question 9

When using an ophthslmoscope, what is the provider looking for when assessing a patient with glaucoma?

Answer 9

Optic disc cupping

Question 10

This is an example of…

Answer 10

Optic disc cupping

Question 11

In glaucoma, the optic nerve has cupping, which causes it to get __.

Answer 11

larger

Question 12

What does a glare test do?

Answer 12

Quantifies vision loss associated with light scatter

Question 13

Who is a candidate for a glare test?

Answer 13

A patient with cataracts

Question 14

If a patient sees like this, what condition might they have?

Answer 14

Cataracts

Question 15

The slit-lamp test maginifies which portion of the eye?

Answer 15

Anterior portion

Question 16

The slit-lamp test uses a __-powered microscope

Answer 16

low

Question 17

Who is a candidate for a slit-lamp test?

Answer 17

Cataracts (see white opaque lens)

Retinal detachment

Glaucoma

Macular degeneration

Question 18

What does a slit-lamp test do for a patient with glaucoma?

Answer 18

Distinguishes between open-angle and closed-angle glaucoma

Question 19

This patient is getting what type of test?

Answer 19

Slit lamp test

Question 20

What does a tonometer measure?

Answer 20

Intraocular pressure (IOP)

Question 21

When is a tonometer used?

Answer 21

In patients with glaucoma that we are concerned with an increase in IOP

Question 22

How is a tonometer used?

Answer 22

Covered end of probe touches the anesthetized corneal surface

Question 23

What is the normal range for IOP?

Answer 23

10-21 mmHg

Question 24

Who is IOP testing indicated for?

Answer 24

Anyone over 40 years old

Question 25

If a patient has a family history of glaucoma, how many times should they get their IOP tested?

Answer 25

1-2x a year

Question 26

What indicates the onset of glaucoma?

Answer 26

An increase in IOP

Question 27

Glaucoma is a __ disease

Answer 27

silent

Question 28

What type of tonometer is the gold standard?

Answer 28

Goldman’s applanation tonometer

Question 29

What type of tonometer can a patient use at home?

Answer 29

Tonopen

Question 30

Self-testing tonometers are in their…

Answer 30

infancy

Question 31

If a patient has high IOP, what test is indicated?

Answer 31

Gonioscopy

Question 32

What does a gonioscopy do?

Answer 32

Determines whether open-angle or closed-angle glaucoma is present

Question 33

What type of test is being performed on this patient?

Answer 33

Gonioscopy

Question 34

What does a gonioscopy give visualization of?

Answer 34

Anterior part of the eye, where the iris meets the cornea

Question 35

What are four additional tests that someone might undergo for diagnostic testing of the eye?

Answer 35

CT

MRI

Radioisotope scanning

Ultrasonography

(all are painless and need no follow up)