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III. Advanced Contact Lenses > Ocular Prosthetics (F) > Flashcards

Ocular Prosthetics (F) Flashcards

1
Q

How often does Medicare cover a prosthetic replacement?

A

every 5 years

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2
Q

What are the treatments for discharge for a prosthetic patient?

A
  1. steroid, antihistamine, combo drops
  2. drops, ointments
  3. Enuclean (removes mucus but stopped making)
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3
Q

What is the best way to color match a prosthetic eye?

A

stock prosthetic eye color match with slides and photos

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4
Q

What are the objectives of fitting a Reform or Shell eye?

A
  1. match lid apertures
  2. match lid contour
  3. complete lid closure with blink or sleep
  4. maximize motility and stability
  5. eliminate empty dead space
  6. details of matching look of other eye
  7. comfort
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5
Q

What are the possible reasons for discharge for a prosthetic patient?

A
  1. allergies
  2. infection
  3. fit
  4. damaged prosthetic
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6
Q

What are the aspects included in prosthetic evaluation?

A
  1. movement
  2. alignment (angle Kappa)
  3. look for tear droplets on back of prosthetic (bad because means space)
  4. discharge
  5. protein deposits
  6. cracks
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7
Q

What is removal of the contents of the globe with sclera and EOM intact called? 1. When would this be done? 2

A
  1. evisceration

2. endophthalmitis, corneal perforation, blind painful eye

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8
Q

What is the recommended wearing time for a prosthetic?

A
  1. individualized for patient
  2. sleep in if possible
  3. remove once a week for cleaning
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9
Q

What are the different type of shapes of prosthetics in AO stock eyes?

A
  1. oval shape
  2. standard shape
  3. three corner shape
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10
Q

What should a prosthetic be stored in?

A

water or RGP conditioning solution

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11
Q

What are the purposes of a prosthetic?

A
  1. cosmetic
  2. maintain orbital structures
  3. maintain lid position
  4. slows progression of phthisical eye
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12
Q

What are the aspects to look at during a socket evaluation during an exam?

A
  1. color
  2. implant condition (exposure and migration)
  3. scarring
  4. conformers
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13
Q

If there is poor centration of a prosthetic, what can be done?

A
  1. add wax to same side that it has moved towards

2. grind opposite side

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14
Q

Which EOMs are typically attached to the prosthetic?

A

lateral, medial, superior and inferior rectus muscles

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15
Q

What are tips to give prosthetic patients?

A
  1. polycarb specs
  2. stay at eye level
  3. turn your head
  4. use hats or hair
  5. cleanliness is key
  6. wipe eye nasally to prevent dislodging
  7. go to regular follow up exams
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16
Q

What is removal of the contents of the orbit necessitating reconstructive surgery (facial prosthesis)? 1. When would this be done? 2

A
  1. exenteration

2. large orbital tumors or malignant melanoma

17
Q

What should be used to clean a prosthetic?

A
  1. soap and water
  2. RGP cleaner
  3. avoid rubbing alcohol and solvents
18
Q

When are ocular prosthetics used?

A
  1. ocular trauma or disease leading to loss of eye

2. phthisis bulbi

19
Q

What is the ocular prosthetic that is a curved disc of plastic having a center thickness of 2mm or greater? 1. Less than 2mm? 2

A
  1. Reform eye (artificial eye)

2. Shell eye

20
Q

What is removal of the entire globe with orbital tissue preserved called? 1. When would this be done? 2

A
  1. enucleation

2. intraocular malignancies or blind painful eye

21
Q

What is used to mold a current prosthetic that is damaged?

A

dental stone

22
Q

What is removed in subtotal exenteration? 1. Total exenteration? 2. Extended exenteration? 3

A
  1. eye and adjacent intra orbital tissue
  2. eye, adjacent intra orbital tissue, and periorbital tissue with or without skin of eyelids
  3. eye, adjacent intra orbital tissue, periorbital tissue with or without skin of eyelids, and adjacent structures of bones and sinuses
23
Q

When inserting a prosthetic, does the superior or inferior end go in first?

A

superior

24
Q

What is the pupil size for AO stock eyes? 1. HVID? 2

A
  1. 3.5mm

2. 11.5mm

25
Q

What needs to be sent to the lab to make custom contact lens prosthetics?

A
  1. clear lens that has already been fit

2. photos of good eye to match

26
Q

What are the possible reasons for a contact lens prosthetic?

A
  1. aniridia or discoria
  2. corneal scar
  3. black pupil eliminating diplopia
  4. dark tints eliminating photophobia in albinism
  5. X chrome lens for color deficiency
  6. strabismus (put off center for cosmetics)

III. Advanced Contact Lenses (16 decks)

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