Abstract
The clinical events and variations in intraocular pressure (IOP) that occur in endocapsular phacoemulsification technique were compared to the modified extracapsular extraction technique during the intraoperative and immediate postoperative periods. Phacoemulsification technique caused less corneal edema, less ocular discomfort and fewer postoperative complications than the modified extracapsular extraction technique. The observed increase in postoperative IOP, especially in the case of phacoemulsification, makes pressure monitoring mandatory, as well as the use of ocular hypotensive agents when the IOP exceeds acceptable limits.
Highlights
In dogs, the extraction of the lens for restoration of vision loss due to a cataract has become a routine procedure in veterinary medicine
The advantages of phacoemulsification, which is based on the fragmentation of the lens by highfrequency ultrasonic waves and its concomitant aspiration (Dziezyc, 1990; Glover and Constantinescu, 1997), are a shorter duration of surgery, a low risk of vitreous loss, maintenance of the intraocular pressure (IOP) during surgery and less intense iridocyclitis, in addition to a smaller incision and smaller scar accompanied by greater corneal transparency and less astigmatism (Dziezyc, 1990; Glover and Constantinescu, 1997; Linebarger et al, 1999)
The objective of the present study was to monitor the clinical events and variations in IOP during endocapsular phacoemulsification technique compared to the modified extracapsular extraction technique, which was still adopted when complications occurred during phacoemulsification that required conversion to the extracapsular procedure
Summary
The extraction of the lens for restoration of vision loss due to a cataract has become a routine procedure in veterinary medicine. Until the advent of phacoemulsification, extracapsular extraction was the most widely used and recommended technique for cataract removal in dogs (Whitley et al, 1993). Disadvantages of phacoemulsification include the high cost of the equipment and the need for a well-prepared team (Glover and Constantinescu, 1997; Linebarger et al, 1999), often requiring prolonged training
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