CRA: Certified Retinal Angiography Exam Questions with Detailed Verified Answers

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CRA: Certified Retinal Angiography Exam
Questions with Detailed Verified Answers

Question: What is the order of aqueous humor flow?

Ans✅ ✅: Ciliary body > posterior chamber > pupil > anterior chamber > trabecular
meshwork (filtration angle) > Schlemms cancal > episcleral blood vessels

Question: What structure in the eye produces aqueous humor?

Ans✅ ✅: ciliary body

Question: What muscles contracts the pupil?

Ans✅ ✅: circular sphincter

Question: What muscles dilate the pupil?

Ans✅ ✅: Radial dilator

Question: What are the layers of the retina in order?

Ans✅ ✅: ILM > RNFL > GCL > IPL > INL > OPL > ONL > Photoreceptor > RPE >
Choroid

Question: What are photoreceptors in the eye?

Ans✅ ✅: sensory cell that responds to light rods and cones responsible for
perception of black and white and color vision

Question: Does the fovea consist of rods or cone receptor cells?

Ans✅ ✅: Cones

Question: What are cone photoreceptors responsible for?

Ans✅ ✅: Color vision

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Question: What are rod photoreceptor cells responsible for?

Ans✅ ✅: dim light night vision and black and white vision

Question: What are the four layers of the choroid?

Ans✅ ✅: Hallers > Sattlers > Choriocapillaries > Bruchs membrane

Question: What is the vitreous?

Ans✅ ✅: clear gel between the lens and the retina consisting of 98% water along
with small amounts of protein and collagen

Question: In the 7 fields of gaze ETDRS map, what can be seen in field
1?

Ans✅ ✅: optic disc

Question: In the 7 fields of gaze ETDRS map, what can be seen in field
2?

Ans✅ ✅: macula

Question: In the 7 fields of gaze ETDRS map, what can be seen in field
3?

Ans✅ ✅: temporal to macula

Question: In the 7 fields of gaze ETDRS map, what can be seen in field
4?

Ans✅ ✅: Superior temporal

Question: In the 7 fields of gaze ETDRS map, what can be seen in field
5?

Ans✅ ✅: Inferior temporal

Question: In the 7 fields of gaze ETDRS map, what can be seen in field
6?

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Ans✅ ✅: Superior nasal

Question: In the 7 fields of gaze ETDRS map, what can be seen in field
7?

Ans✅ ✅: Inferior nasal

Question: How is blood supplied to the iris?

Ans✅ ✅: greater arterial circle located through iris

Question: How is blood supplied to the retina?

Ans✅ ✅: Central retinal artery and posterior ciliary arteries

Question: How is blood supplied to the choroid?

Ans✅ ✅: ophthalmic artery

Question: The choroid accounts for ______% of total blood flow in the
eye.

Ans✅ ✅: 85%

Question: what is the difference between veins and arteries and how to
tell them apart on fundus image?

Ans✅ ✅: Arteries carry oxygenated blood away from the heart supplying blood to
the body, while veins carry deoxygenated blood rich in waste product through the liver
and kidneys to the heart - Arteries look pale while veins are deep red in color

Question: The eye uses ___________ in the blood to the feed the
retina and provide oxygen to the eye.

Ans✅ ✅: Glucose

Question: What does systemic mean?

Ans✅ ✅: disease that affects the whole body rather than a single organ or part of
the body, ex. dm, hypertension, ocular ischemic syndrome