Shared Flashcard Set

Details

Keratoplasty
Surgical Procedure
16
Medical
Professional
01/16/2016

Additional Medical Flashcards

 


 

Cards

Term
What 4 layers make up the cornea?
Definition
1) epithelial cells
2) substantia propria
3) elastic lamina
4) endothelial cells
Term
What is the function of the cornea?
Definition
To allow light into the eye, and to bend light rays to help the lens focus them upon the retina.
Term
What happens to our corneas with age?
Definition
they flatten out.
Term
What are some leading causes of clouding of the cornea?
Definition
1) eye injuries that leave a white scar (penetrating wounds, fire, chemicals)
2) bacterial, viral, or fungal infections that lead to scarring
3) corneal dystrophies
4) inherited corneal diseases
5) cataract or other eye surgery
Term
During corneal transplant surgery, which part of the cornea is replaced?
Definition
only the central part.
Term
In which 2 forms may corneal donor tissue arrive from the eye bank?
Definition
1) arrives as a whole eye,
or:
2) arrives as prepared and sized cornea buttons
Term
What might the surgeon request for the preparation of a donor cornea?
Definition
A separate, sterile table.
Term
What is used to store the donor corneal button?
Definition
A petri dish.
Term
Which drops may be instilled after general anesthesia is induced?
Definition
Tetracaine drops
Term
Which communicable diseases may be present in the donor tissue?
Definition
hepatitis, HIV, Cruetzfeldt-Jakob Disease
Term
What is the purpose of the 4-0 silk traction sutures placed at the insertions of the superior & inferior rectus muscles?
Definition
Used to fix and steady the eye while the graft bed is prepared.
Term
What is the function of a "trephine"?
Definition
It is placed on the cornea and is used to make the corneal cut around the cornea and into the anterior chamber.
Term
Before passing 10-0 polyamide to the surgeon to suture the new graft in place, what might s/he ask you to do with it?
Definition
wet it with saline.
Term
After the graft is placed, why is BSS or acetylcholine solution injected into the anterior chamber through a fine cannula?
Definition
The cannula ensures that the wound is watertight.
Term
What dressing will most likely be used to protect the post operative eye?
Definition
antibiotic drops, eye is covered with antibiotic-impregnated gauze, an eye pad, & a shield.
Term
Prior to the induction of anesthesia, the surgical technologist should always confirm that ____ has arrived.
Definition
the donor cornea
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