What is the tarsal plate of the eyelid?
The tarsal plates serve as the main structural component of the eyelids. They are made of dense connective tissue and contain the Meibomian glands and eyelash follicles. There are approximately 30 meibomian glands in the upper eyelid and 20 meibomian glands in the lower eyelid.
Where is the bulbar conjunctiva located?
anterior sclera
The bulbar conjunctiva is found on the eyeball over the anterior sclera. Tenon’s capsule binds it to the underlying sclera.
What does injected conjunctiva mean?
Conjunctival injection or hyperemia is a nonspecific response with enlargement of conjunctival vessels induced by various diseases. Conjunctival injection is an important diagnostic clue for infection or inflammation and can be utilized for the monitoring of the disease progression and response to treatment.
What are the layers of conjunctiva?
Microscopically conjunctiva consists of three layers- epithelium, adenoid layer, and a fibrous layer.
- Conjunctival Epithelium:
- Substantia propria or conjunctival submucosa:
- Fibrous layer:
What is the tarsus of the eye?
The tarsi (tarsal plates) are two comparatively thick, elongated plates of dense connective tissue, about 10 mm (0.39 in) in length for the upper eyelid and 5 mm for the lower eyelid; one is found in each eyelid, and contributes to its form and support. They are located directly above the lid margins.
What is tarsal plate sparing?
Tarsal plate sparing is due to an anatomic structure called the orbital septum, which limits extravasation of blood beyond the tarsal plate (Figure 2). Indirect radiographic findings that suggest BSF include pneumocephalus and air-fluid levels within, or opacification of, an air sinus.
Where are the tarsal plates?
The tarsal plates of the eye are formed by dense fibrous tissue representing thickened extensions of the orbital septum, molded to the curvature of the eyeball. Each eye has a superior tarsal plate and an inferior tarsal plate. The plates anchor the roots of the eyelashes and contain tarsal (Meibomian) glands.
What is the function of the palpebral conjunctiva?
The palpebral conjunctiva covers the inner surface of the upper and lower eyelids. The bulbar and palpebral conjunctiva are both continuous, making it impossible to lose a contact lens behind your eye.
What does conjunctiva look like?
The conjunctiva is the clear, thin membrane that covers part of the front surface of the eye and the inner surface of the eyelids. It has two segments: Bulbar conjunctiva. This portion of the conjunctiva covers the anterior part of the sclera (the “white” of the eye).
What is the conjunctiva made of?
The conjunctiva is composed of a non-keratinizing stratified columnar epithelium and an underlying layer of loose connective tissue, the substantia propria. The fornices and palpebral conjunctival epithelium are rich in goblet cells, which produce mucin.