bulbar conjunctiva

Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to bulbar conjunctiva: Ocular conjunctiva

bul·bar con·junc·ti·va

the part of the conjunctiva covering the anterior surface of the sclera and the surface epithelium of the cornea.

bulbar conjunctiva


A thin transparent mucous membrane lining the posterior surface of the eyelids from the eyelid margin and reflected forward onto the anterior part of the eyeball where it merges with the corneal epithelium at the limbus. It thus forms a sac, the conjunctival sac, which is open at the palpebral fissure and closed when the eyes are shut. The depths of the unextended sac are 14-16 mm superiorly and 9-11 mm inferiorly. The conjunctiva is divided into three portions: (1) The portion that lines the posterior surface of the eyelids is called the palpebral conjunctiva. It is itself composed of the marginal conjunctiva, which extends from the eyelid margin to the tarsal conjunctiva; the tarsal conjunctiva, which extends from the marginal conjunctiva to the orbital conjunctiva; and the orbital conjunctiva, which extends from the tarsal conjunctiva to the fornix. (2) That lining the eyeball is the bulbar conjunctiva. It is itself composed of the limbal conjunctiva, which is fused with the episclera at the limbus and the scleral conjunctiva, which extends from the limbal conjunctiva to the fornix. (3) The intermediate part forming the bottom of the conjunctival sac, unattached to the eyelids or the eyeball and joining the bulbar and the palpebral portion is called the fornix (conjunctival fold, cul-de-sac). See dyskeratosis; lid eversion; conjunctival gland; Krause's end bulbs; subtarsal sulcus.
References in periodicals archive ?
Conjunctival naevi are common and are located in the interpalpebral bulbar conjunctiva close to the limbus or at the caruncle.
It commonly occurs on the interpalpebral bulbar conjunctiva close to the limbus.
Terasawa K, Itoh T, Morimoto Y, Hiyama Y, Tosa H (1988) The characteristics of the microcirculation of bulbar conjunctiva in "oketsu" syndrome.
8,16) Staining of the inferior bulbar conjunctiva can also occur in lagophthalmos (incomplete closure of the upper eyelid).
Lid parallel conjunctival folds (LIPCOF) are folds in the inferior, temporal quadrant of the bulbar conjunctiva, parallel to the lower lid margin (see Figure 3).
T-I lesions are those where only the bulbar conjunctiva is involved, T-II if there is corneal involvement, T-III for involvement of the fornix, caruncle or tarsal conjunctiva, and T-IV for tumours invading the eyelid, intraocular, orbit, skin or sinuses involvement.
A patient with acute-onset allergic reaction may indeed have an overwhelming desire to rub their eyes and, in the process, actually worsen their condition leading to redness and puffiness of the eyelid margins and even the bulbar conjunctiva.
with the degree of bulbar conjunctiva hyperaemia usually being low.
11) In some cases, especially with modern-day lenses, this staining across the bulbar conjunctiva may not be that evident, but more that there is staining across the corneal epithelial surface.
When fluorescein is instilled it naturally collects in the 'furrows' of the normal adult bulbar conjunctiva (Figure 14), and it is only when this sign remains after more than a few minutes that it can be associated with desiccation.
A variety of objects of different sharpness and texture may land on the cornea or bulbar conjunctiva at different speeds.
c) Symblepharen, where one or more areas of the palpebral conjunctiva adhere to the bulbar conjunctiva