The answer to this popular riddle is a sewing needle. Sewing needles have small oval openings to put thread through; these are called eyes. Threading a needle is the act of putting...
A fly has two compound eyes and each eye is made up between 3,000 and 6,000 simple eyes. These eyes create small pictures that allow the fly to see movements from the left, right, ...
A grasshopper has five eyes, including two compound eyes and three simple eyes. The compound eyes are made up of many separate lenses that work together to form a picture. The comp...
Tears are necessary for lubricating and nourishing your eyes so that you can see clearly. Dry eyes occur when you have a lack of tears, and this can lead to severe discomfort. Lear...
A bee has five eyes. It has two huge compound eyes and three simple eyes. The simple eyes are called ocelli. Each compound eye is made up 150 tiny structures called ommatidia. Thes...
Living creatures have eyes, usually two, but sometimes more, that help them see and process visual information. Some things have eyes but cannot see. Potatoes, needles and some typ...
Vision is an important part of our lives, yet the ability to see is something that many people take for granted. It’s easy to not think about caring for our eyes until something go...
An eye disease is any condition that affects the eye. These may be minor conditions that clear up on their own or serious conditions that lead to permanent loss of sight. They also...
Dry eye syndrome is a common and uncomfortable condition that occurs when your eyes cannot properly lubricate themselves. Many eye drops that treat the symptoms of dry eye are avai...
If you have a condition that affects the blood vessels, such as high blood pressure, heart disease or diabetes, it can raise the chances of your having an eye stroke. They happen t...