bulbar conjunctiva

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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.
Farlex Partner Medical Dictionary © Farlex 2012


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.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann
References in periodicals archive ?
C) Perivascular and endothelial staining in the bulbar conjunctiva. Original magnification x63.
In this paper, we use our fully automatic hyperemia grading framework in order to identify the most relevant areas of interest in the bulbar conjunctiva. There were two main reasons for this experiment.
(ii) At day 3: (1) blebs were also elevated but hyperemia was alleviated; (2) the connective tissue of bulbar conjunctiva oedematous was loose and alleviated, vascular dilation and congestion were visible, and there was a scattered infiltration of neutrophils and macrophages ([??]indicates neutrophils).
Surgical excision revealed a completely excised malignant melanoma of the bulbar conjunctiva, with 2.4 mm in thickness.
There is a localised, elevated yellow-white area on the bulbar conjunctiva near the nasal limbus.
On local examination a smooth, oval, reddish in colour, bilobulated swelling of 15 x 17mm size arising from the bulbar conjunctiva near the inner canthus was seen.
In dogs, primary involvement occurred within nonpigmented epithelium along the leading edge of the nictitating membrane and temporal bulbar conjunctiva (Figure 1D, E) (PIRIE et al., 2006).
One-hundred-and-three eyes of 99 consecutive patients undergoing routine cataract surgery were randomised to receive SCA either to the superior bulbar conjunctiva (n=52) or the inferior bulbar conjunctiva (n=51).
Patients with "oketsu" syndrome revealed impairment of microcirculation on the basis of observiation of the blood flow of their bulbar conjunctiva by means of a video-microscope system (Terasawa et al., 1988), and they presented with elevated blood viscosity.
Thus, carefully lifting the eyelids away will usually reveal normal bulbar conjunctiva (the white part of the eyeball) in the protected, unexposed areas and marked redness in the exposed, irritated areas when irritation is the cause of the conjunctivitis.
Conjunctival Autografting- In this technique free graft from superior/ superotemporal bulbar conjunctiva with limbal stem cell transplantation is placed over the bare sclera after excision of a pterygium.
Conjunctivochalasis (CCh) was first described at 1942 by Hughes (1) as redundant, loose, nonedematous inferior bulbar conjunctiva interposed between the globe and the lower eyelid.