Pseudophakia Is Associated With an Increased Risk of Post-Operative Fibrin Formation in Dogs Undergoing Phacoemulsification Compared to Elective Aphakia.

Pseudophakic dogs have threefold higher fibrin formation risk, significantly impacting vision outcomes.

This retrospective study examined postoperative fibrin formation in 193 eyes from 116 dogs undergoing phacoemulsification, comparing outcomes between pseudophakic eyes (intraocular lens implanted) and aphakic eyes (no lens implantation). Pseudophakic eyes demonstrated a significantly higher incidence of fibrin formation at 43% compared to 15% in aphakic eyes, representing a threefold increased risk. Notably, patient signalment, diabetic status, concurrent ocular or systemic disease, cataract stage, and postoperative ocular hypertension were not associated with fibrin formation development. At six-month follow-up, fibrin formation was significantly associated with vision loss exclusively in pseudophakic eyes, while no such association existed in aphakic eyes. Although intraocular lens presence was not directly correlated with vision loss, secondary fibrin formation in pseudophakic patients represented a significant complication affecting visual outcomes. These findings suggest that postoperative fibrin management may be particularly important in dogs receiving intraocular lens implants during cataract surgery.

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