Combined Peribulbar and Retrobulbar Block Anesthesia and Antibiotic-Steroid Injection: A Simple Method to Prevent Retrobulbar Hemorrhage, Globe Perforation, or Infection

Introduction: Retrobulbar hemorrhage is a rare, progressive, sight-threatening emergency. Standardized treatment algorithms for it exist in the literature; however, their efficiency is uninterpretable in most nonophthalmic settings. This paper reviews retrobulbar bleeding, the pathophysiology of vision loss, and the therapeutic modalities and their efficacy in addressing such visual damage. Case Report: We present the unfortunate case of an 82-year-old male with coronary artery disease on anticoagulants who presented for a vitrectomy for a vitreous hemorrhage secondary to eccentric disciform degeneration under general anesthetic with an accompanying retrobulbar block. He subsequently developed a retrobulbar hemorrhage at some point post-operatively. He presented to his surgeon 18-hours after the operation with no light perception on ophthalmologic examination as well as facial ecchymosis and proptosis. Efforts to reduce his intraocular pressure were successful, but there was no return of vision. Conclusion: Retrobulbar hemorrhage can be a devastating visual event. Standardized treatment algorithms have been described, however, the effectiveness or need of such treatments can only best be evaluated by an ophthalmologist and are often performed too late to provide meaningful recovery

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Simple device to determine the pressure applied by pressure clips for the treatment of earlobe keloids

Indian Journal of Plastic Surgery ◽

10.4103/0970-0358.173128 ◽

2015 ◽

Vol 48 (03) ◽

pp. 293-296 ◽

Cited By ~ 2

Author(s):

Aashish Sasidharan ◽

Ann David ◽

Amish Gohil ◽

Ashish Kumar Gupta

Keyword(s):

Steroid Injection ◽

Surgical Excision ◽

Compression Therapy ◽

Treatment Modalities ◽

Slight Variation ◽

Simple Method ◽

Pressure Therapy ◽

Intralesional Steroid ◽

Intralesional Steroid Injection ◽

Common Problems

ABSTRACT Background: Keloids of the ear are common problems. Various treatment modalities are available for the treatment of ear keloids. Surgical excision with intralesional steroid injection along with compression therapy has the least recurrence rate. Various types of devices are available for pressure therapy. Pressure applied by these devices is uncontrolled and is associated with the risk of pressure necrosis. We describe here a simple and easy to use device to measure pressure applied by these clips for better outcome. Objectives: To devise a simple method to measure the pressure applied by various pressure clips used in ear keloid pressure therapy. Materials and Methods: By using a force sensitive resistor (FSR), the pressure applied gets converted into voltage using electrical wires, resistors, capacitors, converter, amplifier, diode, nine-volt (9V) cadmium battery and the voltage is measured using a multimeter. The measured voltage is then converted into pressure using pressure voltage graph that depicts the actual pressure applied by the pressure clip. Results: The pressure applied by different clips was variable. The spring clips were adjustable by slight variation in the design whereas the pressure applied by binder clips and magnet discs was not adjustable. Conclusion: The uncontrolled/suboptimal pressure applied by certain pressure clips can be monitored to provide optimal pressure therapy in ear keloid for better outcome.

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A simple way for producing holographic filters suitable for image improvement

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100108271 ◽

1978 ◽

Vol 36 (1) ◽

pp. 226-227

Author(s):

K.-H. Herrmann ◽

E. Reuber ◽

P. Schiske

Keyword(s):

Transfer Functions ◽

Diffraction Order ◽

Lateral Position ◽

Simple Method ◽

Spatial Frequencies ◽

Resolution Electron ◽

Wiener Filters ◽

Image Improvement ◽

Optical Reconstruction ◽

Set Up

Aposteriori deblurring of high resolution electron micrographs of weak phase objects can be performed by holographic filters [1,2] which are arranged in the Fourier domain of a light-optical reconstruction set-up. According to the diffraction efficiency and the lateral position of the grating structure, the filters permit adjustment of the amplitudes and phases of the spatial frequencies in the image which is obtained in the first diffraction order.In the case of bright field imaging with axial illumination, the Contrast Transfer Functions (CTF) are oscillating, but real. For different imageforming conditions and several signal-to-noise ratios an extensive set of Wiener-filters should be available. A simple method of producing such filters by only photographic and mechanical means will be described here.A transparent master grating with 6.25 lines/mm and 160 mm diameter was produced by a high precision computer plotter. It is photographed through a rotating mask, plotted by a standard plotter.

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Rotary Beveling for In Situ Thin-Section Microscopy of Cell Cultures

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100099192 ◽

1981 ◽

Vol 39 ◽

pp. 550-551

Author(s):

Dean A. Handley ◽

Jack T. Alexander ◽

Shu Chien

Keyword(s):

Cell Growth ◽

Cell Cultures ◽

Molecular Interactions ◽

Convenient Method ◽

Petri Dish ◽

Simple Method ◽

Thin Section Microscopy ◽

Thin Sectioning ◽

Organic Fluids

In situ preparation of cell cultures for ultrastructural investigations is a convenient method by which fixation, dehydration and embedment are carried out in the culture petri dish. The in situ method offers the advantage of preserving the native orientation of cell-cell interactions, junctional regions and overlapping configurations. In order to section after embedment, the petri dish is usually separated from the polymerized resin by either differential cryo-contraction or solvation in organic fluids. The remaining resin block must be re-embedded before sectioning. Although removal of the petri dish may not disrupt the native cellular geometry, it does sacrifice what is now recognized as an important characteristic of cell growth: cell-substratum molecular interactions. To preserve the topographic cell-substratum relationship, we developed a simple method of tapered rotary beveling to reduce the petri dish thickness to a dimension suitable for direct thin sectioning.

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