Table 1.
Cataract stage, concurrent conditions, complications, and outcomes associated with dogs undergoing surgery, medical management, or no treatment for cataracts (77 eyes from 44 dogs)
| Group | No treatment Number of eyes (dogs) 8 (n = 5) | Medical treatment Number of eyes (dogs) 35 (n = 20) | Surgical treatment Number of eyes (dogs) 34 (n = 19) |
|---|---|---|---|
| Cataract stage | |||
| Immature cataracts | 5 (3) | 16 (10) | 20 (12) |
| Mature cataracts | 3 (2) | 15 (8) | 6 (4) |
| Hypermature cataracts | 0 (0) | 4 (2) | 8 (6) |
| Concurrent condition | |||
| Diabetes mellitus | 3 (2) | 4 (6) | 6 (12) |
| Lens-induced uveitis | 1 (1) | 12 (8) | 17 (10) |
| Viterous degeneration | 0 (0) | 4 (3) | 0 (0) |
| Retinal degeneration | 0 (0) | 13 (7) | 0 (0) |
| Retinal detachmenta | 1 (1) | 0 (0) | 1 (1)b |
| Corneal disease | 2 (1) | 3 (2) | 0 (0) |
| Lens instability | 2 (2) | 0 (0) | 0 (0) |
| Glaucoma | 3 (2) | 0 (0) | 0 (0) |
| Complications | |||
| Preoperative or intraoperative capsule compromisea | 0 (0) | 0 (0) | 2 (2) |
| Intraoperative hyphema | 0 (0) | 0 (0) | 19 (13) |
| Corneal disease | 0 (0) | 9 (6) | 27 (19) |
| Glaucoma | 1 (1) | 9 (5) | 13 (8) |
| Retinal detachment | 0 (0) | 1 (1) | 6 (4) |
| Vitreous changes | 0 (0) | 1 (1) | 12 (7) |
| Lens/IOL instability | 0 (0) | 7 (5) | 1 (1) |
| Persistent uveitis | 0 (0) | 12 (8) | 4 (3) |
| Cataract progression | 0 (0) | 23 (14) | 0 (0) |
| Outcome | |||
| Success | 0 (0) | 15 (9) | 27 (16) |
| Evisceration and prosthesis/enucleation | 7 (4) | 9 (6) | 5 (3) |
| Blind, no treatment | 0 (0) | 0 (0) | 2 (1) |
| Euthanasia | 1 (1) | 11 (6) | 0 (0) |
n = total number in group.
a
Pretreatment retinal detachment was not examined as a risk factor in the analysis because of the infrequent (< 5%) occurrence of this condition.
b
Concurrent retinal detachment was present in the fellow eye, which did not undergo surgery.