The conjunctiva is a loose connective tissue that covers the surface of the eyeball (bulbar conjunctiva) and reflects back upon itself to form the inner layer of the eyelid (palpebral conjunctiva). This tissue firmly adheres to the sclera at the limbus, where it meets the cornea.
How would you describe a normal conjunctiva?
Normal: In a normal patient, the sclera is white in color and the palpebral conjunctiva appears pink . Unless conjunctiva is diseased you are only visualizing sclera and palpebral vascular bed through the translucent conjunctiva.
Which definition best describes the conjunctiva of the eye?
The conjunctiva is the clear, thin membrane that covers part of the front surface of the eye and the inner surface of the eyelids . It has two segments: Bulbar conjunctiva. This portion of the conjunctiva covers the anterior part of the sclera (the “white” of the eye).
How do you describe 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. The bulbar conjunctiva is also called the ocular conjunctiva.
How would you describe sclera and conjunctiva?
The sclera is a tough, opaque, fibrous tissue. This connective tissue helps to maintain the shape of your eyeball, while the conjunctiva is a mucous membrane covering the outer part of your sclera .
What are the types of conjunctiva?
The conjunctiva can be divided into three regions: the palpebral or tarsal conjunctiva, the bulbar or ocular conjunctiva, and the conjunctival fornices .
What are the steps of an eye exam?
- Completing a Health History Form. ...
- Review of Health History and Pre-Exam Consult. ...
- Glaucoma Test. ...
- Perimetry Test. ...
- Cover Test. ...
- Refraction Test. ...
- Binocular Slit-Lamp Examination. ...
- Dilation Procedure.
What are the 3 layers of the eye?
- The outer layer of the eyeball is a tough, white, opaque membrane called the sclera (the white of the eye). ...
- The middle layer is the choroid. ...
- The inner layer is the retina, which lines the back two-thirds of the eyeball.
What is the main function of the eye?
Structure and Function of the Eyes. The structures and functions of the eyes are complex. Each eye constantly adjusts the amount of light it lets in , focuses on objects near and far, and produces continuous images that are instantly transmitted to the brain.
What is the main function of the rods in the eyes?
Rod, one of two types of photoreceptive cells in the retina of the eye in vertebrate animals. Rod cells function as specialized neurons that convert visual stimuli in the form of photons (particles of light) into chemical and electrical stimuli that can be processed by the central nervous system .
How many layers does the conjunctiva have?
Microscopically conjunctiva consists of three layers – epithelium, adenoid layer, and a fibrous layer.
What color is the bulbar conjunctiva?
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.
What is the bulbar conjunctiva made up of?
Anatomically, the conjunctiva is composed of a bulbar and a palpebral component . The bulbar conjunctiva is a thin, semitransparent, colorless tissue that covers the sclera up to the corneoscleral junction, the limbus.
Does the conjunctiva cover the entire eye?
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.
How do you check 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 color should sclera be?
The white part of the eye that serves as a protective layer is called the sclera, which covers over 80% of the eyeball’s surface. A healthy sclera should be white. If it becomes yellow or discolored, an underlying condition may be present. Here are some reasons why your sclera might turn color.
