Acta ophthalmologica
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Acta ophthalmologica · Dec 1993
Randomized Controlled Trial Comparative Study Clinical TrialRetrobulbar anaesthesia. A clinical evaluation of four different anaesthetic mixtures.
One-hundred and thirty-nine consecutive cases of retrobulbar blocks were evaluated concerning clinical effect on motility and pain. The patients were randomly selected to one of four different mixtures of anaesthetics. A mixture containing lidocaine w/adrenaline, bupivacaine w/adrenaline and hyaluronidase was shown to be significantly more effective than any of the other tested mixtures concerning analgesia and significantly better than mixtures without hyaluronidase concerning motility/akinesia.
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Acta ophthalmologica · Aug 1993
Randomized Controlled Trial Clinical TrialEffects of retrobulbar bupivacaine on post-operative pain and nausea in retinal detachment surgery.
A prospective double-masked clinical trial was conducted to determine whether retrobulbar bupivacaine block had an effect on post-operative pain, nausea and intra- and post-operative use of analgesics in retinal detachment surgery performed under general anaesthesia. Thirty-two patients were randomized to have general anaesthesia with or without retrobulbar bupivacaine. Pain score was documented as 0-10 (0 = no pain. 10 = worst pain ever felt). ⋯ Men complained more about post-operative pain than did women. The patients in the retrobulbar group complained less about nausea. Significantly fewer patients in the retrobulbar group required parenteral pain relief during operation and the first 48 h after.
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A 9-year-old girl was wounded by a pencil which entered the right orbit and passed towards the left. The broken part remained inside. ⋯ The case is presented to emphasize the contribution of CT to the perforating injuries of the orbit with wooden particles. Importance of orbital foreign bodies in the differential diagnosis of proptosis in the pediatric age group is also discussed.
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Acta ophthalmologica · Dec 1992
Comparative StudyShort-term effects of proparacaine on human corneal thickness.
.5% proparacaine HCl is commonly used for topical anaesthesia in ultrasound pachometry prior to refractive surgery. This drug is known to alter corneal epithelial adhesion. Does 0.5% proparacaine result in an alteration in corneal thickness due to changes in the corneal epithelium? Corneal thickness was measured by optical pachometry at 30 sec intervals for 15 min under 3 experimental conditions; 1) 2 drops of artificial tears, 2) 1 drop of 0.5% proparacaine, 3) 2 drops of 0.5% proparacaine. ⋯ Exponential modelling of the corneal edema recovery function demonstrated that recovery to baseline corneal thickness occurred 7 to 8 min following the instillation of 2 drops of 0.5% proparacaine. The data of this study suggest that only 1 drop of 0.5% proparacaine should be used for topical anaesthesia prior to ultrasound pachometry. This recommendation may minimize the possibility of measuring artifactually large corneal thickness estimates, and thus reduce the possibility of corneal microperforation during refractive surgery.
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Acta ophthalmologica · Feb 1991
Case ReportsCongenital retinal arteriovenous communication associated with a full-thickness macular hole.
We present here a patient suffering from an unilateral retinal arteriovenous communication, belonging to group 2 in Archer classification, associated to a homolateral vascular malformation into the ophthalmic artery area, and a full-thickness macular hole. This is the first case with such an association reported in the literature.