Indications

Indications 

  • Ocular trauma
  • Acute eye pain 
  • Intraocular foreign body 
  • Vision loss 
  • Infection
  • Change of vision
  • Difficult and/or inconclusive fundoscopic exam
  • Leukocoria 

Contraindications 

  • Suspected globe rupture 

 

Equipment 

  • US machine 
  • High frequency linear probe 
  • Tegaderm transparent adhesive 
  • Sterile Gel

Preset

  • Ocular/ophthalmic preset

* The eye is more vulnerable to the bioeffects of ultrasound than most other body tissues. For this reason, it is essential to maintain very low mechanical index (MI) and thermal index (TI) during ocular scanning to minimize the theoretical risk of tissue damage [3]. If your POCUS system does not provide a dedicated ocular/ophthalmic preset, the MI should be set at 0.23 or lower and the TI of 1.0 or lower [17-19]. Doppler modes (color and pulsed wave) increase acoustic output, and such, their use is not recommended in pediatric ocular POCUS.  

The MI/TI can be found on the imaging screen on most PoCUS machines. (Figure 1)  

 

Figure 1. Acceptable MI and TI as seen on ophthalmic preset of a Sonosite PoCUS unit.