Closed globe injury classification:-
- Based on the mechanism of injury (type) :
A. Contusion (blunt trauma)
B. Lamellar laceration (due to a sharp object or blunt trauma)
C. Superficial foreign body (organic matter or metals)
D. Mixed (combined injuries)
- Based on the visual acuity (grade) :
A. >20/40 (0.5)
B. 20/50 - 20/100 (0.4 - 0.2)
C. 19/100 - 5/200 (0.2 - 0.025)
D. 4/200 - Light Perception (0.02 - L+ P+ )
E. No Light perception
- Based on the pupillary defect :
A. Relative afferent pupillary defect (RAPD) positive
B. Relative afferent pupillary defect (RAPD) negative
- Based on the Zones of violations :
Zone I- External (superficial injuries of bulbar conjunctiva, cornea and sclera)
Zone II- violation of the Anterior segment (structures in anterior chamber and the pars plicata)
Zone III- violation of the Posterior segment (structures posterior to the posterior lens capsule- retina, vitreous and optic nerve)
Thats all
- Jaskunwar Singh
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