(Blue Histology: the eye)
There are slight histological distinctions in the conjunctiva portions. The conjunctiva covering the lid margin and bulbar conjunctiva is a modified nonkeratinized, stratified squamous epithelium. The tarsal and fornix conjunctiva is covered by stratified squamous and cuboidal to columnar epithelium of diverse thickness which preserve some squamoidal characteristics, such as having numerous desmosomes and a microvillus surface. Goblet cells are profuse in the tarsus, fornix, and specialized areas as the plica semilunaris, while they are scant nearby the lid boundary and the cornea's limbus.
A histological sagittal section of both eyelids and the eye are shown here: (1) cornea (2) lens (3) fornix part of the conjunctiva. (4) marginal conjunctiva (5) palpebral portion of the lacrimal gland (6) tarsal conjunctiva. The constitution of Goblet cells within the epithelium at each of these regions is fluctuant. (Anatomy of the Eye: Conjunctiva 2005)
Function of Conjunctiva
It moistens the eye'
The production of the transparent mucous thick fluid acts as a lubricant
It aids in tear production to maintain the eye cleanness.
Protects the eye from pathogenic invasions
Protect the eye from foreign material to directly come in contact like dust.
Anatomy of the Eye: Conjunctiva, Mission for Vision, 2005
Blue Histology - The Eye, School of Anatomy and Human Biology - The University of Western Australia
Chapter 7, Conjunctiva
Establishment of a Cultivated Human Conjunctival Epithelium as an Alternative Tissue Source for Autologous Corneal Epithelial Transplantation
Ted M. Montgomery, 2007, Anatomy, Physiology & Pathology of the Human Eye,