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Stye of the upper eyelid 8-year-old boy with an external hordeolum of lower lid. The first sign of a stye is a small, yellowish spot at the center of the bump that develops as pus and expands in the area. [7] Other stye symptoms may include: A lump on the top or bottom eyelid; Localized swelling of the eyelid; Localized pain; Redness; Tenderness
A chalazion may occur following a stye or from hardened oils blocking the gland. [2] The blocked gland is usually the meibomian gland, but can also be the gland of Zeis. [8] A stye and cellulitis may appear similar. [2] A stye, however, is usually more sudden in onset, painful, and occurs at the edge of the eyelid. [2] Cellulitis is also ...
The lacrimal canaliculi (sg.: canaliculus) are the small channels in each eyelid that drain lacrimal fluid, from the lacrimal puncta to the lacrimal sac. This forms part of the lacrimal apparatus that drains lacrimal fluid from the surface of the eye to the nasal cavity. [1]
Styes are normally harmless and do not cause long lasting damage. Chalazion (plural: chalazia) is caused by the obstruction of the oil glands and can occur in both upper and lower eyelids. Chalazia may be mistaken for styes due to the similar symptoms. This condition is however less painful and it tends to be chronic. Chalazia heal within a few ...
The lacrimal punctum (pl.: puncta) or lacrimal point is a minute opening on the summits of the lacrimal papillae, seen on the margins of the eyelids at the lateral extremity of the lacrimal lake. There are two lacrimal puncta in the medial (inside) portion of each eyelid. Normally, the puncta dip into the lacrimal lake.
From that sac, the tears drain through the lacrimal duct into the nose. Anatomists divide the gland into two sections, a palpebral lobe, or portion, and an orbital lobe or portion. [3] The smaller palpebral lobe lies close to the eye, along the inner surface of the eyelid; if the upper eyelid is everted, the palpebral portion can be seen.