Trauma of the eye Flashcards
In suspected trauma of the eye, which imaging modality is preferred?
1 - MRI
2 - X-ray
3 - CT scan
4 - ultrasound
3 - CT scan
MRI is not indicated since foreign body may be metal.
In patients with suspected orbital trauma due to a fall or assault, what is it important to tell the patient NOT to do?
1 - blow their nose
2 - consume food and drink
3 - go to sleep
4 - turn their heads
1 - blow their nose
Contents from sinus can enter orbit and cause infection
Will require maxillary facial referral
May see tear sign on the CT scan
In chemical injuries, are acids or alkalis more dangerous?
- alkalis
Alkalis can penetrate tissues more rapidly
Acids typically coagulate proteins to prevent penetration
When considering chemical injuries, which part of the front of the eye is most sensitive to damage?
1 - sclera
2 - limbus
3 - cornea
4 - iris
2 - limbus
- junction between sclera and cornea
Limbal ischaemia implies damage to stem cells and corneal epithelium may fail to repair, predisposing the patient to chronic infections
Chemical injuries need treating quickly. What is the most important thing to first do in any chemical eye injury?
1 - steroids
2 - analgesia
3 - irrigation with water
4 - all of the above
3 - irrigation with water
Need to check the pH of the eyes to restore the physiological pH
Following irrigation in chemical injuries we would add fluorescein dye to the eye and look at what?
1 - check cornea
2 - check conjunctiva
3 - check for limbal ischaemia
4 - all of the above
4 - all of the above
Important to look for for abrasions and staining
Typically they will need follow up referral to ensure adequate healing
Following irrigation and an initial assessment of the eye, how can the eye be treated?
1 - preservative free steroids
2 - topical antibiotics
3 - lubrication drops
4 - cycloplegics
5 - all of the above
5 - all of the above
Cycloplegics = temporary paralysis of ciliary body and dilate the pupil
