BACKGROUND Peribulbar and retrobulbar anesthesia have long been opposed on the basis of the existence of an intermuscular membrane, which is supposed to separate the intraconal from the extraconal spaces in a water-tight fashion. A local anesthetic injected outside the cone should spread through this septum to reach the nerves to be blocked. The existence of this septum is questioned. The aim o...

OBJECTIVE To evaluate an indwelling temporary retrobulbar catheter for repeatable injections of local anesthetics for long-lasting and titratable retrobulbar anesthesia in intraocular surgery. PARTICIPANTS The prospective clinic-based study included 153 patients who underwent vitreoretinal surgery (n=111) or buckling procedures with cryocoagulation (n=34). The mean duration of surgery was 84....

PURPOSE To evaluate and compare the safety and efficacy of combined two-site phacoemulsification and trabeculectomy surgery with mitomycin C (MMC) in glaucoma-cataract patients with retrobulbar or topical anesthesia. PATIENTS AND METHODS A retrospective, nonrandomized review of consecutive phacotrabeculectomy patients with a minimum follow-up time of 6 months, no previous glaucoma surgeries, ...

INTRODUCTION We aim to describe a mechanism of vision loss following vitrectomy surgery with retrobulbar block (RBB) associated with severe vascular stasis of the optic nerve and macula in order to improve safety of local anesthesia for ophthalmic surgery. CASE PRESENTATION We report three cases of patients who underwent pars plana vitrectomy (PPV) with retrobulbar anesthesia with no retrobul...

In 1993 Medicare paid more money to anesthesia providers for cataract surgery than for any other surgical procedure. Patients undergoing cataract surgery often receive monitored anesthesia care (MAC). Thus, cuts in anesthesia payments from Medicare for cataract surgery may be forthcoming. If few interventions were being done after a retrobulbar block was placed, then a registered nurse might be...

INTRODUCTION Color Doppler Imaging (CDI) is used widely to study retrobulbar circulation. OBJECTIVES To determine the association between progression of diabetic retinopathy (DR) and alterations in retrobulbar arterial circulation using CDI studies. MATERIALS AND METHODS Prospective observational case series. It is single institutional study of 50 eyes of nonproliferative diabetic retinopat...

PURPOSE We sought to assess long-term changes in the flow parameters of retrobulbar vessels in diabetic patients. METHODS The retrobulbar circulation of 138 eyes was evaluated between 1994 and 1995 and 36 eyes were reevaluated between 2004 and 2008 (study group). They were divided into four groups: eyes of diabetic patients without diabetic retinopathy (DR), eyes with nonproliferative DR, eye...

OBJECTIVE To evaluate peroperative pain management using a flexible spinal anesthesia catheter introduced into the retrobulbar space which allows injections of local anesthetics for vitreoretinal surgery. METHODS Twenty-five patients who underwent vitreoretinal surgery receiving retrobulbar anesthesia with 3.5 ml ropivacaine 0.75%. After injection, a catheter with spinal needle 22G x 1 1/2 (4...

BACKGROUND/AIM Sub-Tenon's block is nowadays commonly used in ophthalmic surgery because of its safety and efficacy. The aim of this study was to investigate the distribution of the anaesthetic solution with different amounts of hyaluronidase in the retrobulbar space, following an injection into the Sub-Tenon's space. METHODS In this experimental study, 40 pig cadaver heads were used (80 eyeb...