Shared Flashcard Set

Details

Opt 223 Posterior Seg
Parafoveal telangiectasia
23
Other
Not Applicable
03/01/2008

Additional Other Flashcards

 


 

Cards

Term
Parafoveal telangiectasia is a rare developmental condition associated with capillary ______ formation.
Definition
microaneurysm
Term
Microaneurysms develop 1.5 disc diameters on the _____ side of the fovea
Definition
temporal
Term
Which types of telangiectasia do you not have to manage so conservatively?
Definition
2A and 2B
Term
______ _____ are shunts that run from artery to artery and vein to vein.  It is beneficial unlike neovascularization and IRMA.
Definition
Collateral vessels
Term
Collateral vessels lie within the ____ or on the surface of the ____ and face the area that is _____.
Definition
  1. retina
  2. optic
  3. hypoxic
Term
IRMA (Intraretinal microvascular anomalies) will _____ major blood vessels but it will not _____ major blood vessels.
Definition

connect

cross over

 

Term

IRMA is only seen in _____ eye disease.

Definition
diabetic
Term
What is the name for neovascularization located on the optic nerve, or 1 disc diameter around the optic nerve?
Definition

neovascularization of the disc

 

Term
What do you call the type of neovascularization that develops somewhere other than the optic disc, usually along the major blood vessels?
Definition
NVE (neovascularization elsewhere)
Term
_____ drugs are anti-VEGF drugs. They destroy the ____ and cause the blood vessels to resolve.
Definition

Intravitreal

VEGF

Term
If you see a cotton wool spot or a flame shaped hemorrhage you should first think of _____ because some or part of the retina has been _____.  Then worry about _____.
Definition

ischemia

compromised

neovascularization

Term
An EOG tests ____ function
Definition
retinal pigment epithelium
Term
The Arden ratio is the ratio of the _____ ____ to the ____ ____.
Definition
light peak to dark trough
Term
____ and ____ foreign bodies can effect EOG.
Definition
copper and iron
Term
Name two drugs that can effect the RPE?
Definition
chloroquine and mellaril
Term
What disease is associated with a "fried egg"  appearance of the fovea?  like a yellow spot in
Definition
Best's disease
Term
What is the night blinding disorder characterized by "white spots?"
Definition
Fundus albipunctatus
Term

Ocular albinism is characterized by a _____ Arden ratio, while fundus albipunctatus and Best's disease are characterized by a ______ Arden ratio.  What is a normal Arden ratio?

Definition

high (4 or more)

reduced (1.3)

Normal 2-3

 

Term
In Best's disease the EOG is ____ but the ERG is _____.  This is because the ____ only tests a small part of the retina while the _____ tests the entire retina. 
Definition
  1. normal
  2. abnormal
  3. EOG
  4. ERG
Term
The a wave of a full field Flash ERG is ____ going and related to the number of functioning _____. 
Definition

negatively

functioning

Term
The b wave occurs after the a wave and is ______ going.  It is related to the number of functioning ____ cells and _____ cells.
Definition

positively

bipolar

Mueller

Term
Rods respond best to ___ wavelengths, while cones respond best to ____ wavelengths.
Definition

short (blue)

long (red)

Term
Once neovascularization occurs the _____ of the a and b wave of an ERG will be _____.
Definition

amplitude

reduced

Supporting users have an ad free experience!