Ophthalmology
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Randomized Controlled Trial Comparative Study Clinical Trial
Localization of local anesthetic solution by magnetic resonance imaging.
The aim of this study was to examine the distribution of local anesthetic solution by magnetic resonance imaging (MRI) after combined peribulbar and retrobulbar, superomedial retrobulbar, and sub-Tenon's injection in relation to clinical akinesia. ⋯ Reliable anesthesia is achieved using a combined peribulbar and retrobulbar block and a relatively great volume of local anesthetic solution, which spreads throughout the orbit, as evidenced by MRI. After superomedial retrobulbar and sub-Tenon's injection, the local anesthetic solution accumulates behind the globe. Sub-Tenon's injection gives good analgesia and slight akinesia with a very small volume. Superomedial retrobulbar injection and combined peribulbar and retrobulbar block provide a similar degree of exophthalmos, which seems to be the result of the volume injected behind the globe.
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Case Reports Comparative Study
Demographic-related variations in posterior segment ocular sarcoidosis.
To compare the frequency of posterior segment involvement (PSI), the prevalence of specific posterior segment signs, and visual acuity in ocular sarcoidosis by patient race, sex, and age. ⋯ We have identified variations based on patient race, sex, and age in PSI, specific posterior segment signs, and visual acuity in cases of ocular sarcoidosis.