Cases reported "Eye Burns"

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1/4. Clinical course of phacoemulsification wound burns.

    PURPOSE: To present 3 cases illustrating the outcomes of phacoemulsification corneal wound burns. SETTING: A university referral center. methods: This was a retrospective case series. RESULTS: Three patients developed corneal wound burns during phacoemulsification of cataract. All eyes developed from 7.00 to 15.00 diopters of astigmatism in the axis of the incision. In 2 eyes, the astigmatism decreased over several months. The third had permanent high astigmatism and corneal edema requiring corneal transplantation. CONCLUSIONS: Corneal wound burns occurring during phacoemulsification can have serious effects on the cornea, including corneal edema and severe astigmatism. In the milder cases, the astigmatism decreases spontaneously over several months.
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ranking = 1
keywords = phacoemulsification
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2/4. phacoemulsification conditions resulting in thermal wound injury.

    PURPOSE: To determine and model the relationships between phacoemulsification conditions and viscoelastic agents that result in thermal wound injury. SETTING: Animal laboratory, Irvine, california, USA. methods: Mechanical and animal models, various wound sizes, phacoemulsification tips, and dispersive and cohesive viscoelastic agents were evaluated. Settings for phaco power, vacuum, and irrigation levels were controlled within a surgically relevant range. In the mechanical and animal models, incision temperature was assessed as a function of phacoemulsification parameters and time. In the animal model, wound damage was evaluated at the time of surgery. RESULTS: Induced time delays from the onset of phaco power to the onset of irrigation flow caused a thermal rise at the incision site. In these experiments, lack of irrigation and aspiration resulted in the greatest thermal rise and caused wound damage. Both the cohesive and dispersive viscoelastic agents were associated with a delay in the start of irrigation and aspiration, which resulted in similar maximum temperatures. Mathematical models were developed to estimate the maximum incision temperature from the phacoemulsification power, the duration (seconds) of occlusion, the tip gauge and type, and other phacoemulsification parameters. The models predict that under comparable conditions, occlusion with a viscoelastic agent will result in higher incision temperatures than occlusion with a balanced salt solution. CONCLUSION: Under comparable phacoemulsification conditions, both the cohesive and dispersive viscoelastic agents were associated with elevated temperatures that would be preventable by ensuring irrigation and aspiration flow before the onset of phacoemulsification power.
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ranking = 1
keywords = phacoemulsification
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3/4. Corneal surgery for severe phacoemulsification burns.

    OBJECTIVE: To evaluate the outcome of corneal surgery for the treatment of severe corneal phacoemulsification burns. DESIGN: Interventional case series. PARTICIPANTS: Four patients with severe intraoperative phacoemulsification burns. INTERVENTION: One patient underwent penetrating keratoplasty and 3 underwent lamellar keratoplasties for the treatment of their corneal burns. MAIN OUTCOME MEASURES: Preoperative and postoperative visual acuities, preoperative and postoperative corneal topographies, and clinical observation. RESULTS: The visual acuity (VA) after the phacoemulsification burn was counting fingers in all patients. One patient had a penetrating keratoplasty, whereas the other 3 had lamellar grafts. After the corneal surgery, the corrected postoperative VA was 20/30 to 20/50 in all patients, with astigmatism ranging from 2.5 to 5.5 diopters. CONCLUSION: Severe phacoemulsification burns can be safely treated with corneal surgery, with acceptable postoperative visual acuities.
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ranking = 1.1428571428571
keywords = phacoemulsification
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4/4. Corneoscleral burn during phacoemulsification surgery.

    We report a case in which a severe corneoscleral burn occurred during phacoemulsification surgery. The equipment-tuning process was uneventful and routine surgery was expected. Severe tissue injury occurred because the anterior chamber collapsed momentarily and the phaco tip touched corneoscleral tissue. We discuss mechanisms by which this type of injury may occur and the likely cause in our case. We also suggest methods to reduce the incidence.
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ranking = 0.71428571428571
keywords = phacoemulsification
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