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.
Stop using this medicine and call your doctor at once if you have: 1  severe burning or itching of your eyes; 2  severe redness or swelling in or around your eye; 3  vision problems, eye pain, seeing halos around lights;  oozing or discharge from your eye; 1  or. increased sensitivity to light.