Is the conjunctiva Keratinized?
The conjunctiva is composed of a non-keratinizing stratified columnar epithelium and an underlying layer of loose connective tissue, the substantia propria.
What are the diseases of conjunctiva?
Conjunctiva Disease
- Conjunctiva.
- Vernal Keratoconjunctivitis.
- Serositis.
- Cicatricial Pemphigoid.
- Atopic Keratoconjunctivitis.
- Ocular Surface.
- Scar Formation.
- Conjunctivitis.
What is meant by Keratinization?
Keratinization is defined as cytoplasmic events that take place in keratinocytes that move through the different layers of the epidermis to finally differentiate into corneocytes. From: Nanoscience in Dermatology, 2016.
What is a bitot spot?
Bitot’s spots are a specific manifestation of Vitamin A deficiency. These are triangular dry, whitish, foamy appearing lesions which are located more commonly on the temporal side. 3. They mainly composed of keratin admixture with gas-forming bacteria Corynebacterium xerosis, lead to foamy appearance.
What causes inflammation of the conjunctiva?
The conjunctiva can become inflamed as a result of: a bacterial or viral infection – this is known as infective conjunctivitis. an allergic reaction to a substance such as pollen or dust mites – this is known as allergic conjunctivitis.
What is the difference between conjunctiva and sclera?
The conjunctiva contributes to the tear film and protects the eye from foreign objects and infection. The sclera is the thick white sphere of dense connective tissue that encloses the eye and maintains its shape.
What causes xerophthalmia?
Xerophthalmia refers to the spectrum of ocular disease caused by severe Vitamin A deficiency (VAD). Vitamin A serves several essential functions in the eye, and deficiency can lead to a constellation of ocular signs and symptoms that affect the conjunctiva, cornea, and retina.
What causes Keratinization?
Keratinization can also be abnormal. For example, too much keratin causes us to develop callouses from wearing ill-fitting shoes or repeated use of equipment with our hands. Some types of cancer, for example squamous cell carcinoma, can also show keratinization.