Many serious eye diseases require intravitreal injections, or injections directly into the eyeball. New research suggests the treatment can be so stressful that patients' blood pressure skyrockets leading up to the injections, and could lead to cardiovascular events like heart attack.

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Many serious eye diseases require intravitreal injections, or injections directly into the eyeball. New research suggests the treatment can be so stressful that patients' blood pressure skyrockets leading up to the injections, and could lead to cardiovascular events like heart attack.