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Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.
Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Approximately 25% of all reported medication errors result from some kind of name confusion.