Schmidt et al developed a classification and regression tree (CART) for predicting visual outcome after an open globe injury.
Parameters:
(1) relative afferent papillary defect (RAPD)
(2) initial vision
(3) eyelid laceration
(4) wound location (zone)
|
RAPD |
Initial Vision |
Lid Laceration |
Zone |
Node |
|
No |
NA |
NA |
NA |
A |
|
Yes |
hand move-ment or better |
NA |
NA |
B |
|
Yes |
light perception |
No |
Zone 1 or 2 |
C |
|
Yes |
light perception |
No |
Zone 3 |
D |
|
Yes |
light perception |
Yes |
NA |
E |
|
Yes |
no light perception |
NA |
NA |
F |
where:
• Zone 1 is cornea and limbus, Zone 3 is posterior including macula and optic nerve, with Zone 2 inbetween
|
Node |
No Vision |
|
A |
3% |
|
B |
11% |
|
C |
33% |
|
D |
63% |
|
E |
88% |
|
F |
83% |
Specialty: Ophthalmology, Emergency Medicine, Surgery, general
ICD-10: ,
