Birmingham Eye Trauma Terminology (BETT)
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Birmingham Eye Trauma Terminology (BETT)
The BETT was created by Kuhn et al in 1996 to provide a simple, clear definition of all injury types and place the injuries with a comprehensive framework. While attempts have been made to improve the BETT system, none have been consistently incorporated.
Terms in the BETT
Eyewall- Sclera and Cornea
Closed Globe Injury- No full thickness injury
Open Globe Injury- Full thickness injury
Closed- Globe subgroups
Contusion- No full thickness injury (generally a blunt injury)
Lamellar laceration- Partial thickness injury of the eye wall (generally a sharp injury)
Open-globe subgroups
Rupture- Full-thickness injury of the eyewall by a blunt object
Laceration- Full-thickness injury of the eyewall caused by a sharp object
Laceration subgroups
Penetrating injury- Single laceration of the eye wall; i.e. no exit wound, if more than one entrance wound then must be from a different agent
Intra-ocular foreign body- retained foreign objects causing entrance wounds
Perforating injury- two full thickness lacerations with an entrance and exit injury
References
1. Kuhn F, Morris R, Witherspoon CD, Heimann K, Jeffers JB, Treister G.A standardized classification of ocular trauma. Ophthalmology. 1996 Feb;103(2):240-3.
2. Kuhn F1 Morris R, Witherspoon CD, Heimann K, Jeffers JB, Treister G. A standardized classification of ocular trauma. Graefes Arch Clin Exp Ophthalmol. 1996 Jun;234(6):399-403.
3. Pieramici DJ, Sternberg P Jr, Aaberg TM Sr, Bridges WZ Jr, Capone A Jr, Cardillo JA, de Juan E Jr, Kuhn F, Meredith TA, Mieler WF, Olsen TW, Rubsamen P, Stout T. A system for classifying mechanical injuries of the eye (globe). The Ocular Trauma Classification Group.Am J Ophthalmol. 1997 Jun;123(6):820-31.
4. Kuhn F, Morris R, Witherspoon CD, Mester V.J Fr Ophtalmol. The Birmingham Eye Trauma Terminology system (BETT). 2004 Feb;27(2):206-10.
