Eyelids

The eyelids are a thin, transparent and elastic membrane that covers the eye on both sides with connective tissue.

The eyelids are the most mobile part of the face. * Length of the upper eyelids - up to 9 mm, lower eyelids from 8 to 20 mm;

The skin of the eyelids is thin, devoid of sebaceous glands, abundantly supplied with blood and lymphatic vessels, nerve endings and has a significant amount of muscles and bones. Of the sensitive nerve endings on the upper eyelid, there are anastomotic nerve cells that transmit pain impulses, as well as receptors for visual information. The inner surface of the upper eyelid is covered with multilayered squamous non-keratinizing epithelium of white color, the posterior and lower ones are pigmented, in the form of loose connective tissue, where the sweat glands are located.

The musculocutaneous flap is supplied from the outside with many vessels; its structure differs from most others and has a different anatomy. Structure and function of the eyelids. In the upper part of the orbit there are: the lacrimal sac, located above its exit from the membrane, the nasal cavity, the gap between the nasal septum and the lacrimal sac, the bottom of the orbit, occupied by the eyeball. The horizontal septum divides the orbit into two halves: the superolateral halves, the greater halves - the orbit