A heart attack occurs when the flow of blood to the heart is blocked, most often by a build-up of fat, cholesterol and other substances, which form a plaque in the arteries that feed the heart (coronary arteries). The interrupted blood flow can damage or destroy part of the heart muscle. A heart attack, also called a myocardial infarction, can be fatal, but treatment has improved dramatically over the years. It's crucial to call 911 or emergency medical help if you think you might be having a heart attack.
Irises are classified as being one of six colors: amber, blue, brown, gray, green, hazel, or red. Often confused with hazel eyes, amber eyes tend to be a solid golden or copper color without flecks of blue or green typical of hazel eyes. Blue eyes have a low level of pigment present in the iris.
Hazel eye color has also been defined as the medium-color between light brown and dark green. Hazel is common amongst people in America and Europe, while rare in African, Middle Eastern and Asian people. Gray. Gray eye color is considered to be a darker shade of blue (like blue-green).This eye color is related to low melanin in the iris and is related to scant pigmentation throughout the body (like pale skin, light hair, etc). Gray eyes have been found to reveal small amounts of yellow and brown color in the iris.azel eye color has also been defined as the medium-color between light brown and dark green. Hazel is common amongst people in America and Europe, while rare in African, Middle Eastern and Asian people. Gray. Gray eye color is considered to be a darker shade of blue (like blue-green).