2023年4月29日 · To understand the diseases and conditions that can affect the eye, it helps to understand basic eye anatomy. Here is a tour of the eye starting from the outside, going in through the front and working to the back. The eye sits in a protective bony socket called the orbit. Six extraocular muscles in the orbit are attached to the eye.

2005年5月1日 · The vertebrate eye is composed of easily recognized structures such as pupil and iris, and other internal structures only seen with specialized medical equipment. In this chapter we provide the images and nomenclature describing eye structures, including eye muscles.

Each eye constantly adjusts the amount of light it lets in, focuses on objects near and far, and produces continuous images that are instantly transmitted to the brain. The orbit is the bony cavity that contains the eyeball, muscles, nerves, and blood vessels, as well as the structures that produce and drain tears.

Get ophthalmologist-reviewed tips and information about eye health and preserving your vision. Learn about eye anatomy and learn how your eyes work with ophthalmologist-approved facts.

We review the normal anatomy of the human globe, eyelids, and lacrimal system. This contribution explores both the form and function of numerous anatomic features of the human ocular system, which are vital to a comprehensive understanding of the pathophysiology of many oculocutaneous diseases.

2025年1月8日 · The eyelid or palpebra functions primarily to protect the the eye from mechanical damage and to help adjust the amount of incoming light. In addition, blinking the eyelid helps spread a liquid film of tears over the cornea (a structure discussed below) which, being avascular, is critically dependent upon the tear film as a means of gas exchange.

2018年7月12日 · Human eye is one of the sense organs in human body that reacts to light and helps in seeing objects. The human eye structure and function makes it easy to distinguish the objects based on colour, size and other parameters

The sclera, [note 1] also known as the white of the eye or, in older literature, as the tunica albuginea oculi, is the opaque, fibrous, protective outer layer of the eye containing mainly collagen and some crucial elastic fiber.

The eye is a fluid-filled sphere enclosed by three layers of tissue (Figure 11.1). Most of the outer layer is composed of a tough white fibrous tissue, the sclera. At the front of the eye, however, this opaque outer layer is transformed into the cornea, a specialized transparent tissue that permits light rays to enter the eye.

2025年1月22日 · The sclera is the white, opaque outer layer of the eye that provides structural support and protection. Composed mainly of collagen and elastic fibers, the sclera is tough and durable, forming the majority of the outer coating of the eye. It serves as the attachment point for the extraocular muscles that control eye movement and