Ultrasonic Vitrectomy Performance Assessment Using Micro-Extensional Rheology
Vitrectomy, or the surgical removal of vitreous, is a required step in most vitreo-retinal surgical procedures. Vitreous is a transparent gel-like substance found between the lens capsule and retina. It is composed of an inflated and highly hydrated collagen matrix with 99 wt.% water, 0.9 wt.% salts, and less than 0.1 wt.% collagen and hyaluronic acid. Vitreous is related to various functions, including maintaining transparency, protecting the retina from trauma, and other metabolic requirements. Due to the highly connected matrix of collagen fibers, vitreous removal can cause traction in areas of localized retinal adhesion. Thus, vitrectomy must temper extraction speed with the cutting action to maintain retina safety. Conventional pneumatic blade (PB) cutters use a “guillotine-style” cutter to aspirate vitreous out of the eye
Case Report: An EEG Captured Case of Migralepsy/Migraine Aura-Triggered Seizures
Case Presentation A 55-year-old man with a known history of migraine headaches without aura, hypertension, hyperlipidemia, obesity, and newly diagnosed type 2 diabetes mellitus was referred to the Emergency Department (ED) by his ophthalmologist. Symptoms Medical History Physical Examination Neurologic Examination Laboratory Findings Medical Advice The patient was discharged from the ED with resolution of […]