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II. Advanced Ocular Technique > Foreign Body Removal (M4) > Flashcards

Foreign Body Removal (M4) Flashcards

1
Q

What are the indications of conjunctival/ocular irrigation?

A
  1. chemical burns
  2. foreign body
  3. discharge removal
  4. gonioscopy or tonometry
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2
Q

What is the order that irrigation of the eye should take place?

A
  1. inferior
  2. nasal
  3. superior
  4. temporal
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3
Q

How long must irrigation occur for chemical burns?

A

30 min

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4
Q

For conjunctival foreign body removal, what is the procedure?

A
  1. try to irrigate first
  2. look for corneal foreign body tracks with NaFl
  3. Always evert lids (most commonly in superior palpebral)
  4. Use Q-tip then spud or needle, scrapping downward
  5. Assess and document
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5
Q

What needs to be assessed and documented for conjunctival foreign body removal?

A
  1. number
  2. location
  3. degree of embeddedness (depth)
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6
Q

What are the major things to consider in a corneal foreign body removal?

A
  1. how fast was the FB travelling
  2. what was the FB
  3. location of FB
  4. pain
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7
Q

What are the examination techniques used in corneal foreign body removal?

A
  1. optic section at site of FB

2. DFE as indicated by velocity of FB

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8
Q

What position should the spud/needle be held to the cornea in FB removal?

A

tangential

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9
Q

How quickly will metallic FB oxidize after becoming embedded in the cornea?

A

12-24 hrs

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10
Q

What usually surrounds a corneal rust ring?

A

corneal edema

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11
Q

What should be used to evaluate the cornea integrity? 1. What are you looking for? 2

A
  1. fluorescein strip and sterile saline

2. epithelial involvement and Seidel’s sign

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12
Q

When will a scar definitely be present for a corneal FB?

A

embedded in Bowman’s layer or deeper

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13
Q

What is the purpose of therapeutic pressure patching?

A

immobilize the eyelid in order to reduce discomfort and promote corneal healing

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14
Q

What are the indications for therapeutic pressure patching?

A
  1. Tx of corneal injuries
  2. temporary protection post-surgical
  3. metallic coverage post-ocular injury
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15
Q

What are contraindications of therapeutic pressure patching?

A
  1. CL wearers
  2. active infection
  3. penetrating injury
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16
Q

What are the side effects of therapeutic pressure patching?

A
  1. SPK
  2. corneal edema
  3. skin irritation
17
Q

What are the types of silicone hydrogel CL’s used as bandage CL’s?

A
  1. air optix Night and Day
  2. Purevision
  3. Oasys
18
Q

What are the contraindications for bandage CL’s?

A

active infection/ulcer

19
Q

What are the negatives of pressure patching?

A
  1. loss of depth perception
  2. creates microbe friendly environment
  3. promotes hypoxia
20
Q

What is the typical treatment of a retention cyst?

A

no treatment common

21
Q

Is lymphatic cyst drainage by an optometrist allowed in Ohio?

A

no

22
Q

What is the equipment used for lymphatic cyst drainage?

A
  1. slit lamp
  2. 25G needle
  3. topical anesthetic
  4. 2.5% phenylephrine
  5. broad spectrum antibiotic for 2 days after
23
Q

What are the indications for corneal sensitivity testing?

A
  1. Herpes simplex keratitis
  2. Herpes zoster keratitis
  3. long-term CL wear
  4. dense corneal scars
  5. neurotrophic keratitis
  6. various systemic diseases
24
Q

What is the corneal sensitivity tester that uses a nylon monofilament?

A

Luneau Cochet-Bonnet Aesthesiometer

II. Advanced Ocular Technique (9 decks)

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