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Key Concepts Severe anemia can be detected when discontinuous blood columns are present within the bulbar conjunctival vasculature. β-thalassemia is associated with a decreased tear break-up time and Schirmer testing. Sludging and segmentation of the conjunctival blood vessels (comma sign)…
Key Concepts DNA viruses are frequently associated with vision-threatening complications, while RNA viruses usually cause more benign forms of conjunctivitis. Adenovirus is the most common etiology of viral conjunctivitis. Laboratory testing is rarely necessary for diagnosis; however, identification of the…