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.
Some of the common causes of red circles around eyes are allergies that cause nasal congestion, stress, topical dermatitis, anaemia, abnormalities in skin pigmentation, overexposure to sun, skin diseases such as eczema and broken capillaries. Red puffy eyes may also occur as a side effect to certain medications.