What is the difference between bulbar and palpebral conjunctiva?
The bulbar conjunctiva covers the anterior part of the sclera (the white of the eye). It does not cover the cornea. The palpebral conjunctiva covers the inner surface of the upper and lower eyelids. Its flexibility allowing the eyelids and eyeball to move freely.
What is appearance of bulbar conjunctiva?
It is important to appreciate the differences in normal appearance across the conjunctival sac. The bulbar conjunctiva is loosely bound to the globe and it appears mainly white due to the color of the sclera beneath. Blood-filled capillaries impart a salmon pink color.
How do you inspect bulbar conjunctiva?
The conjunctiva on the eyeball should be equally white in both eyes. The conjunctiva lining the inner eyelid of the lower lid may be inspected by gently pulling down the lid with a finger. The conjunctiva lining the upper lid can only be observed by everting the upper lid as shown in Figure 114.1.
What does a bump on your eyeball mean?
Pingueculae are small yellow-white bumps on the eyeball. They’re deposits of fat, calcium, or protein. These bumps are fairly common in middle-aged and older adults. According to the some studies , men are more likely to get these bumps than women.
Is the cornea the same as the conjunctiva?
Articles On Eye Basics Cornea: a clear dome over the iris. Sclera: the white of your eye. Conjunctiva: a thin layer of tissue that covers the entire front of your eye, except for the cornea.
What is a bulbar conjunctiva?
Bulbar conjunctiva: That part of the conjunctiva, a clear membrane of the eye, which covers the outer surface of the eye. The other part of the conjunctiva is the palpebral conjunctiva, which lines the inside of the eyelids.
What is the bulbar conjunctiva made up of?
stratified squamous epithelium
The bulbar conjunctiva is lined by nonkeratinizing stratified squamous epithelium with scattered goblet cells, mostly in the inferior and nasal portions (Fig. 27.3). The connective tissue stroma, called the substantia propria, is loose in the bulbar conjunctiva.
How do you inspect bulbar conjunctiva and sclera?
Method Of Exam Gently pull the lower eyelid downward and ask the patient to look upward. In doing so, you can better visualize the sclera and palpebral conjunctivae. Note the translucency and vascular pattern of both the scleral and palpebral conjunctivae and the color of the sclera.
How can you tell the difference between sclera and conjunctiva?
The conjunctiva is the membrane that lines the eyelid and loops back to cover the sclera (the tough white fiber layer covering the eye), right up to the edge of the cornea (the clear layer in front of the iris and pupil—see Structure and Function of the Eyes.
What is a pinguecula?
A pinguecula is an alteration of normal tissue resulting in a deposit of protein and fat in the conjunctiva, the thin membrane that covers the white part of the eye. Unlike a pterygium, a pingueculum does not actually grow onto the cornea.
Why do I have jelly in my eye?
The inside of the eyeball is filled with a clear jelly like substance called vitreous humour. This, and the fibrous white sclera help to keep the shape of your eyeball. The blood vessels that run through the choroid carry food and oxygen to the cells of the eye.
What is the difference between conjunctiva and sclera?
The key difference between sclera and conjunctiva is that the sclera is the thick white layer that makes the white part of the eye while the conjunctiva is the thin translucent layer that surrounds the entire eye except for the cornea. Eyes are one of the vital organs in our body, which give our vision.
What does bulbar conjunctiva mean?
The bulbar conjunctiva is the outer layer of the eye that helps protect and regulate the tear film . It covers the sclera, or the white part of the eye. The bulbar conjunctiva extends around your eye and up under your eyelids, but it does not cover your cornea.
What is the conjunctiva and what is its function?
Anatomy. The conjunctiva is divided into three segments: the bulbar conjunctiva,the palpebral conjunctiva,and the fornix conjunctiva.
What is the normal color of conjunctiva?
The normal scleral color is white. However one looks at the sclera through the conjunctiva which may be slightly grey or tan or yellow and contains blood vessels.