EVERYDAY SCIENCE

Detailed explanation-1: -A simple eye (sometimes called a pigment pit) refers to a form of eye or an optical arrangement composed of a single lens and without an elaborate retina such as occurs in most vertebrates.

Detailed explanation-2: -The human eye is the most familiar form of camera-type eyes, which relies on a single lens to focus images onto a retina (Szema & Lee 2009). The other major type of optical systems, com-pound eyes, is common in many mid-water crusta-ceans and in nocturnal insects such as moths and fireflies.

Detailed explanation-3: -Though there are many different types of simple eyes, human simple eyes have one lens and one large grouping of photo receptors called the retina that take in the whole image at once.

Detailed explanation-4: -The simplest model of the human eye is a single lens with an adjustable focal length that forms an image on the retina, or the light-sensitive bed of nerves which lines the back of the eyeball.

Detailed explanation-5: -A simple eye is an eye that relies on one lens to see. A lens is the part of the eye that catches and focuses light in order to create an image. Humans and large animals have a single lens eye structure most commonly referred to as a camera eye.