Journal of cataract and refractive surgery
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To evaluate the effectiveness and safety of an orbital block using an ultrashort, wide-bore blunt metal cannula to inject local anesthetic agents into the anterior sub-Tenon's space. ⋯ Effective and predictable ocular anesthesia can be achieved using a blunt, ultrashort cannula for sub-Tenon's block. The technique greatly reduces the risks for globe perforation, muscle damage, and other serious complications.
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J Cataract Refract Surg · Apr 2004
Changes in keratometric corneal power and refractive error after laser thermal keratoplasty.
To evaluate the effect of laser thermal keratoplasty (LTK) on corneal power and refractive error to develop a logical approach to calculating accurate intraocular lens (IOL) power for cataract surgery. ⋯ After LTK, corneal power measured by manual keratometry was smaller than that measured by corneal topography and changes in corneal power measured by conventional keratometric instruments were greater than changes in refractive error. This difference should be considered in calculating IOL power in post-LTK eyes to prevent undesirable hyperopia after cataract surgery.
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J Cataract Refract Surg · Feb 2004
Randomized Controlled Trial Clinical TrialEffect of midazolam on anxiety level and pain perception in cataract surgery with topical anesthesia.
To study the effect of sedation on patients' anxiety level and perception of pain during cataract surgery under topical anesthesia. ⋯ Patients who had cataract surgery under topical anesthesia were highly satisfied with their operative experience and reported minimal pain during surgery. Anxiety levels diminished after arrival at the hospital, possibly because of reassurance by experienced staff. Intravenous midazolam did not seem to significantly reduce pain or anxiety.
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J Cataract Refract Surg · Feb 2004
Comparative StudyEstimation of pupil size by digital photography.
To evaluate a digital photography method of pupil size estimation over a broad range of illumination conditions and to compare this method with common clinical techniques. ⋯ Estimation of pupil size by digital photography was more repeatable and accurate than estimates by common clinical techniques over a wide range of illumination. Although not as quick as other methods, digital photography is relatively inexpensive, permits lasting documentation, and allows independent grading suitable for clinical research purposes.
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J Cataract Refract Surg · Dec 2003
Randomized Controlled Trial Clinical TrialEfficacy of brimonidine 0.2% in controlling acute postoperative intraocular pressure elevation after phacoemulsification.
To determine the efficacy of brimonidine tartrate 0.2% drops given 2 times a day in reducing intraocular pressure (IOP) spikes during the first 24 hours after phacoemulsification cataract surgery. ⋯ Prophylactic treatment with brimonidine tartrate 0.2% 2 times a day for 2 days was effective in reducing IOP peaks throughout the first 24 hours after phacoemulsification surgery.