Corneal Foreign Bodies Flashcards
1
Q
Mx of ophthalmologic foreign body?
A
- Irrigate w/ saline
- Remove under slit lamp exam
- ABx drop QID until healed
- +/- patching
- ?tetanus prophylaxis
- Opthal consult if globe penetration suspected
2
Q
What is the function of the cornea?
A
- Transmission of light
- Refraction of light
- Barrier against infection, foreign body
3
Q
Symptoms corneal foreign body?
A
- Tearing
- Photophobia
- Foreign body sensation
- Red eye
4
Q
Signs corneal foreign body?
A
- Foreign body
- Conjunctival infection
- Epithelial defect that stains with fluorscein
- Corneal oedema
- Anterior chamber cells / flare
5
Q
Complications of corneal foreign body?
A
- Abrasion
- Infection
- Scarring
- Rust ring
- 2” iritis
6
Q
Treatment of corneal foreign body?
A
- Remove under magnification using local anaesthetic and sterile needle
- OR refer to ophthalmology
- Treat as per corneal abrasion
7
Q
What is a corneal abrasion?
A
Epithelial defect usually due to trauma (e.g. fingernails, twigs, paper) or contact lens.
8
Q
Clinical features of corneal abrasion?
A
- Pain, redness, tearing, photphobia, foreign body sensation
- De-epithelialised area stains with fluorescein dye
- Pain relieved with topical anaesthetic
9
Q
Complications of corneal abrasion?
A
Infection, ulceration, recurrent erosion, 2” iritis.
10
Q
Treatment of corneal abrasion?
A
- Topical antibiotic (drops or ointment)
- Consider topical NSAID, cycloplegic, patch
- Most clear spontaneously within 24-48h
