Inner nuclear layerThe process of vision starts when light successfully travels through the eyeball to be focused on the retina. The eye, the visual organ, is a sphere formed of three layers. The outer layer is a connective tissue layer formed of the sclera posteriorly and the cornea anterior...
The cornea is a transparent outer layer that has the dual purpose of protecting the inner parts of the eye and helping to focus images that are being viewed. Behind the cornea is the iris, which is the colored part of the eye, and the pupil which is the opening at the center. The ir...
Vision is the sense that has been studied most; of all the sensory receptors in the body 70% are in the eyes. Anatomy of the Eye Vision is the sense that requires the most “learning“, and the eye appears to delight in being fooled; the old expression “You see what you expect to ...
1. Quadriceps: These are the major extensors of the knee and are composed of four muscles: –Vastus lateralis: The largest of the quadriceps, it extends from the top of the femur to the kneecap. –Vastus medialis: A teardrop-shaped muscle of the inner thigh that attaches along the femu...
Chapters Languages 0:00Overview 0:56Anatomy and Physiology of the Eye 3:52Visual Acuity and Peripheral Vision Testing 6:37Inspection, Palpation, Pupillary Response and Extraocular Movement Testing 11:04SummaryOverview Procedure Applications and Summary Transcript Automatic Translation Click...
sensitive inner lining of the back of the eye. The retina acts like an electronic image sensor of a digital camera, converting optical images into electrical signals. The optic nerve then transmits these signals to the visual cortex – the part of the brain that controls our sense of sight....
The inner chamber of the eye is filled with a clear jellylike substance known as the vitreous humor. This structureless substance has an index of refraction close to that of water. Sometimes when you look carefully, you can see bits of cellular debris in the vitreous humor called floaters tha...
Eye Anatomy Funduscopic Exam Visual Pathway advertisement II. Anatomy Retina Lines the globe inner surface and contains light sensitive Neurons that transmit signals to the Optic Nerve Photoreceptors (rods and cones) comprise the inner, sensory layer of the Retina Macula Retinal region responsible...
The conjunctiva of the eye consists of an epithelial layer composed of stratified squamous and stratified columnar epithelium. It is non-keratinized with interspersed goblet cells. There are also present within this epithelial layer blood vessels, fibrous tissue, lymphatic channels, melanocytes, T- and...
It has the same function as a digital lens, but in the eyeballs it helps in focusing the light onto the retina. The wall of the eyeball has three layers: an outer (fibrous) layer, a middle (vascular) layer and inner layer. Let us have a closer look at the individual layers of the...