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The site of normal fixation is often assumed to be centered in the foveal avascular zone (FAZ). This assumed anatomic relationship is used during photocoagulation therapy as an objective guide to avoid damaging critical retinal structures on or near fixation. With laser therapy being directed closer and closer to the center of the FAZ, the accuracy with(More)
Streptokinase used as a thrombolytic agent may produce immunologic drug reactions. We report a second case of IgE-mediated anaphylaxis and a late reaction to streptokinase. This late reaction was consistent with an IgG-mediated antigen-antibody disease with transient renal involvement, fever, and cutaneous lesions. The second case responded to prednisone(More)
BACKGROUND DiGeorge anomaly (DGA) is defined as a field defect characterized by dysmorphic facies, hypoparathyroidism, congenital heart defects, and a deficiency in cell-mediated immunity, usually associated with a microdeletion in chromosome 22q11.2. Data correlating clinical and genetic information, especially in terms of the extent of the(More)
We have examined two psychophysical procedures for assessing the size and shape of the human foveal avascular zone (FAZ). Both procedures used a Maxwellian view system with a rotating beam to create a high contrast entoptic view of the retinal vasculature. Most subjects readily report a clear avascular zone surrounding their fixation point. The size of this(More)
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