The Tropic of Cancer and The Tropic of Capricorn. The Tropic of Cancer and the Tropic of Capricorn each lie at 23.5 degrees latitude. The Tropic of Cancer is located at 23.5Â° North of the equator and runs through Mexico, the Bahamas, Egypt, Saudi Arabia, India, and southern China.
Dr. Elliot Werner: Neither. Halos indicate something in the transparent structures of the eye that is interfering with the transmission of light back to the retina. The most common causes of halos are corneal edema (swelling), cataract, and high humidity in the air.
ANGLE-CLOSURE GLAUCOMA. Symptoms may come and go at first, or steadily become worse. You may notice: 1  Sudden, severe pain in one eye. 2  Decreased or cloudy vision, often called steamy vision. 3  Nausea and vomiting. 4  Rainbow-like halos around lights. 5  Red eye. 6  Eye feels swollen.