Normal Eye Anatomy
Document the normal anatomy. This is a key measurement that you need when assessing for ptosis.
Anatomy Of The Human Eye Optometry Educational Poster 24x36 Eye Anatomy Optometry Education Medical Science
Aperture Of The Eye.
Normal eye anatomy. How the Eye Sees. The eye is cushioned within the orbit by pads of fat. The circular opening in the centre of the iris through which light passes into the lens of the eye.
Most of the eye is filled with a clear gel called the vitreous. Whole Globeincludes vitreous section Orbit. The palpebral fissure vertical height PFH is measured between the margin of the lower eyelid to the margin of the upper eyelid.
The inside lining of the eye is covered by special light-sensing. The eye is complex and highly organized organ that functions much like a camera in order to provide sight. An important component of the eye is the nasolacrimal drainage system which serves as a conduit for the fluid of the eye called tears.
Muscles responsible for moving the eyeball are attached to the eyeball at the sclera. The Uvea Of The Eye. At the center of the iris is a hole covered by the clear cornea called the pupil where light enters the eye.
The clear gelatinous substance filling the central cavity of the eye. Humans have two eyes which allows us to have better depth perception and binocular stereopsis. It is composed of millions of visual cells and it is connected by the optic nerve to the brain.
Eyelid with tear film Conjunctiva. The eye is connected to the brain and dependent upon the brain to interpret what we see. The anterior chamber and the posterior chamber.
The anterior segment makes up the front third of the eye between the cornea and lens. The palpebral fissure refers to the normal exposed area between upper and lower eyelids. Sight like the other senses is closely related to other parts of our anatomy.
The orbit also contains the lacrimal gland that is located underneath the outer portion of the upper eyelid. Cornea Of The Eye. A thin multi-layered membrane which lines the inside back two-thirds of the eye.
In addition to the eyeball itself the orbit contains the muscles that move the eye blood vessels and nerves. Tears flow from the external eye to the nasal cavity by the lacrimal apparatus which is composed of the structures involved in tear production Figure 5. The iris controls widening and narrowing dilation and constriction of the pupil.
The eye is approximately 1 inch wide 1 inch deep and 09 inches tall. The macula is a circular area of diameter 55 mm with a center located 17 degrees or 40-50 mm temporal and 053 - 08mm inferior to the center of the optic disc. It is the white and opaque part of the eyeball.
The iris a muscle is the colored part of the eye that contracts and expands to let light into the eye. It includes the cornea iris ciliary body lens and two spaces filled with aqueous humour. An eye series should include the following minimum images.
The human eye has a 200-degree viewing angle and can see 10 million colors and shades. Comparison Right Vs Left. Anatomy of the Eye.
MaculaFovea longitudinal and transverse. Choroid Of The Eye. The retina receives light and sends electrical impulses to the brain that result in sight.
Anterior chamber - longitudinal and transverse. Although the eye and skin have distinct anatomy they are both in direct contact with the external environment. Vision is similar to a camera AN0042.
The front part of the eye is composed of the cornea a clear structure that allows light to enter the eye. Normal Eye Anatomy Sections. It forms the coloured visible part of your eye in front of the lens.
Light projects through your pupil and lens to the back of the eye. The normal palpebral fissure height is 8-11 mm. Lens Of The Eye.
Normal eye anatomy illustration with oblique view cross-section and labels. The White Of The Eye. And for a description of common vision problems see Refraction and Refractive Errors.
Light enters through a central opening called the pupil. Anatomy of the Eye. The five senses include sight sound taste hearing and touch.
How the Eye Works. The sclera is outermost layer of the eyeball. The lens inside our eye focuses this light onto the back of the eye which is called the retina.
It is surrounded by the sclera the white part of the eye which gives the eye its structure and strength. The following is a fundus photograph from a normal eye showing the macula green circle and fovea black circle. Macula Lutea Of The Eye.
Power doppler of retina. Vision camera analogy with object light rays camera and retina.
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