Outcome of phacoemulsification following corneal and lens laceration in cats and dogs (2000–2010)

Abstract

Cats have an excellent outcome and dogs a very good outcome following surgery for corneal and lens laceration. The cause of the trauma, the size of the lesion, the time interval between the ocular trauma and surgery, and the type of surgery were not found to have an influence on the outcome of patients in this study. We postulate that vision loss might develop more often in cases with complications associated with the initial corneal laceration wound.

Effects of intracameral injection of epinephrine and 2% lidocaine on pupil diameter, intraocular pressure, and cardiovascular parameters in healthy cats

“…A previous study conducted in cats has reported that tropicamide induce pupil dilation greater than 10 mm for more than 2 hours . Therefore, we aimed to compare the maximal pupil diameter (MPD) reached in the treatments groups with the MPD reached by a topical cholinergic agent that is commonly prescribed for intraocular procedures . In humans and rabbits, the intracameral injection of 0.2‐0.3 mL of 1% lidocaine provided similar or even superior pupil dilation when compared to that obtained with the use of topical mydriatics.…”

“…The ideal protocol for pupil dilation should induce fast, intense, and stable mydriasis with a duration of at least 2 to 3 hours, while minimizing adverse effects . Topical mydriatic eyedrops are currently the standard method for routine pupil dilation in cats that must undergo corneal and intraocular surgeries . The main disadvantages of mydriatic eyedrops are related to delayed local effect .…”

“…Phacoemulsification for cataract removal is less commonly performed in cats than in dogs. However, the success rate of this procedure in cats appears to be better in comparison with dogs . Similar to other species, complete and long‐acting mydriasis is also required to perform lensectomy in cats .…”

“…Thus, maximum mydriasis is also essential when performing keratoplasties for the treatment of corneal sequestrum and corneal perforation . Under such circumstances, drug‐induced irido‐cycloplegia helps to reduce the pain associated with preoperative anterior uveitis, and pupil dilatation reduces the likelihood of posterior synechiae formation …”

“…In cats, preoperative pupil dilatation for corneal and intraocular surgeries is achieved with 1% atropine, 1% cyclopentolate, and 0.5% tropicamide . However, intraoperative miosis is a complication that may occur in dogs and humans, resulting in inadequate equatorial lens exposure during lensectomy.…”