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.
There are also many things that your eye color reveals about you. Long ago, brown eye color was considered to be the dominant one. However, now scientists know that your eye color is a multi-gene trait, not a single-gene trait. So, itâs a little more complicated than to simply say that brown eye color is dominant. Itâs more of a gene combination. It is even genetically possible to have your eye color divided into two colors on your iris, or two different color irises.