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.
WebMD Symptom Checker helps you find the most common symptom combinations and medical conditions related to visual halos around lights. Click on the combination that matches your symptoms to find the conditions that may cause these problems. Or click on See All Conditions to see every condition related to visual halos around lights. Visual halos around lights. Floating spots or strings in vision, Visual halos around lights. WebMD Symptom Checker helps you find the most common symptom combinations and medical conditions related to visual halos around lights. Click on the combination that matches your symptoms to find the conditions that may cause these problems.