Sankara Nethralaya Clinical Practice Patterns in Ophthalmology Prema Padmanabhan, SS Badrinath
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OCULAR TRAUMA

Open Globe Injuries1

  • Corneal laceration.
  • Corneoscleral laceration.
  • Globe rupture.
  • Intraocular foreign body (IOFB).
An open globe injury is an ophthalmic emergency.
 
HISTORY
  • Nature of the injury
    • Accidental.
    • Self-inflicted.
    • Assault.
  • Cause of the injury
    • Industrial accidents.
    • Domestic accidents.
    • Others.
  • In case of foreign body
    • Composition.
    • Dimension of the foreign body.
  • Treatment history
    • Medical—use of any medications, antibiotics (systemic), tetanus prophylaxis, antibiotics (topical).
    • Surgical procedure including primary wound repair.
 
EXAMINATION
  • Reassure the patient—make them comfortable and handle them gently.
  • Check visual acuity first.
  • Use sterile disposable gloves for examination.
  • Clean ooze/discharge/external contamination carefully with sterile gauze.
  • Lids to be separated very gently for slit lamp examination.
    2
  • For paediatric cases—minimal manipulation/torch light examinations. Rest of the details to be evaluated under GA.
  • Look for any associated facial asymmetry/lid and adnexal trauma/enophthalmos/proptosis.
  • Look for any evidence of infections—lid edema, purulent discharge etc.
  • Examine the pupils and check for RAPD in all cases.
  • Inform trauma/duty consultant for help if required.
  • Check for extraocular movement—In open globe state, do not check for ocular motility, since this can lead to raised intraocular pressure and extrusion of ocular contents.
 
Corneal/Corneoscleral Lacerations
  • Always look for the posterior extent of the laceration, if possible.
  • Determine whether the laceration is full thickness or partial thickness. If in doubt look for anterior chamber depth/perform forced Siedel's test.
  • Measure the dimensions of the laceration and represent the same with a diagram.
  • Record other anterior segment details like, anterior chamber reaction, blood in anterior chamber, status of the lens, uveal prolapse, vitreous prolapse, etc.
  • Do not perform intraocular pressure measurement in open globes.
  • Defer fundus examination in open globes (in self-sealed injuries fundus examination can be done with minimal manipulation and no scleral indentation).
  • USG can be done in self-sealed lacerations. Defer in open globes.
 
Globe Ruptures
  • Suspect globe rupture in cases with dense subconjunctival hemorrhage, subconjunctival pigment and soft eye.
  • Examination is the same as in corneal laceration except that the patient may be advised CT scan to rule out foreign body and associated orbital injuries where appropriate.
    3
 
Intraocular Foreign Bodies
  • History regarding the dimension of the foreign body, composition (magnetic or non-magnetic).
  • Patients with penetrating trauma with the history of injury with flying objects should be advised CT scan to rule out the presence of foreign body and perforating orbital injuries.
  • Ask for thin orbital overlapping cuts with axial and coronal cuts in the CT scan (2 mm cuts).
  • MRI should not be advised if metallic foreign body is suspected.
 
MANAGEMENT
  • Reassurance.
  • Ensure that the patient does not strain in any way.
  • Shield the eye at the earliest.
  • Nil per orally till advised, otherwise.
  • Tetanus prophylaxis—Tetanus toxoid/Tetanus immunoglobulin (Tet.glob).
  • Inform the Trauma Consultant/Duty Consultant, Anaesthetist and Operative Theatre staff.
  • Urgent Physician fitness/Anaesthetist fitness for GA to be obtained.
  • Hospitalise the patient immediately.
  • Prophylactic parenteral antibiotics (usually a combination of cefazolin and gentamycin)—tailored to the individual case.
  • Surgery to be scheduled at the earliest.
 
SURGICAL MANAGEMENT (GENERAL GUIDELINES)
 
Anaesthesia
  • All open globe injuries to be repaired under GA.
  • Peribulbar/parabulbar/retrobulbar anaesthesia should be strictly avoided.
  • If there is any life-threatening contraindication for GA, facial akinesia by O'Brien's/Van Lint technique can be combined with topical anaesthesia.
    4
 
Surgical Repair—Special Instructions
  • Iris tissue when abscised to be sent for microbiological examination.
  • In case of retained intraocular foreign body with open globe VR surgeon to be informed urgently.
  • Cases of open globe injury repaired elsewhere with retained intraocular foreign body to be seen by VR consultants.