POVL 

Background 

• Unclear etiology 
• Associated with prone position, facial pressure and venous congestion 

RF 

• Patient factors 
  • Obesity 
  • Old age 
  • Preop anemia 
  • PVD 
• Perioperative factors 
  • Prone 
  • Prolonged OR time >6h 
  • ++ blood loss 
  • Perioperative transfusion 
  • HD – intaroperative hypottension 

Management 

• Emergent opthalmology consult 
• Vasopressor as salvage