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Powerpoint
Powerpoint

... pupil – Epithelial cells (cytoplasm is transparent part) – Change shape to focus ...
Optic Nerve
Optic Nerve

... • Cornea - transparent, focuses light rays • Sclera – continuation of cornea, going toward the back of the eye (white of the eye) • Optic Nerve – exits at the optic disk and transmits visual information from the eye to the brain. ...
warning signs in childrens` eyes
warning signs in childrens` eyes

... eyes should be aligned (most of the time) on interesting objects, near and far, left and right, and up and down. Any persistent misalignment called "strabismus" will usually cause vision loss (amblyopia) and may be due to nerve or brain problems. ❏ Head Tilt: When a baby's eyes are better aligned in ...
File - vce psychology 2014
File - vce psychology 2014

... The complete network of physiological structures involved in vision. This includes all the parts of the eyes, the nervous system pathways that connect the eyes and the brain, and the areas of the brain that process visual information ...
Vision
Vision

... • The bipolar neurons and ganglion cells process the signal • In the fovea where the acuity is the highest: 1 ...
Eye Injuries Eye injuries can be dangerous. In the worse case
Eye Injuries Eye injuries can be dangerous. In the worse case

... on the eye; and dog teeth and porcupine quills can puncture eyes also. If you notice a dog’s eye tearing more than normal or a dog squinting its eye, then more than likely the dog has some trauma to the eye, eyelids or tissue surrounding the eye. Evaluate the eye for a laceration to the cornea, fore ...
Chapter 58 Assessment and Management of Patients With Eye and
Chapter 58 Assessment and Management of Patients With Eye and

... Due to refractive error in which light rays are spread over a diffuse area rather than sharply focused on the retina, a condition caused by differences in the curvature of the cornea and lens ...
Dry Eye Further reading Dry Eye Further reading
Dry Eye Further reading Dry Eye Further reading

... http://www.journals.elsevierhealth.com/periodicals/jtos/issues This 2007 report covers all aspects of dry eye from definition and classification to diagnosis and management. ...
10.9- Eye Notes
10.9- Eye Notes

... Eye Structure *The eye is about 2.5cm and is hollow It contains 3 layers 1) An outer fibrous layer 2) A middle vascular layer 3) Inner nervous layer ...
PDR® entry for Naphcon-A Ophthalmic Solution (Alcon)
PDR® entry for Naphcon-A Ophthalmic Solution (Alcon)

...  Relief of symptoms of allergic conditions like tearing, redness, swelling, photophobia, itching and blepharospasm.  Clearance of sticky mucoid secretions in conditions like chronic bacterial, allergic or chronic blepharitis. ...
Functions of the eye parts
Functions of the eye parts

... The retina is made up of transparent, sensory and nervous tissue carrying blood vessels, nerve cells and nerve fibers. At the back of the retina, the nerve fibers all come together and emerge as the optic nerve. The nerve endings on the inside of the wall of the retina terminate in light-sensitive c ...
2.8 notes
2.8 notes

... • Vision-improving techniques • Small incisions in the cornea change focus ...
Ophthalmic Surgery Lab Anatomy of the Eye Conjunctiva – coverlet
Ophthalmic Surgery Lab Anatomy of the Eye Conjunctiva – coverlet

... Contains aqueous humor – body continues to reproduce and normally your body maintains this through drainage into the Canal of Schlemm (where cornea meets sclera inside the fibrous tunic) so that you do not overproduce it which can lead to increased intra-ocular pressure) Contains two chambers: Anter ...
OUf Amazing Eyes* ( - - - -
OUf Amazing Eyes* ( - - - -

... other things, receptor cells that are stimulatedby light. Visualimagespickedup by your eyes are translatedinto nervous impulses that are eventuallyinterpretedby the brain. Amazingly,we not only "see" a very clear and precise image through our eyes, we also record this image in living color! Hopefull ...
eye warning signs
eye warning signs

... Lack of fixation: After a few weeks of age, a normal baby should be able to look at your face and follow your eyes as you move from side to side. Even before that, a normal baby will quickly close both eyes when exposed to bright light. Jerking Eye Movements: As a baby begins to fix his/her eyes, th ...
Sensory Physiology
Sensory Physiology

... Why does our eye need accommodation? Normally, when our ciliary muscles are relaxed, parallel rays from distant objects will converge into the retina. If our eye is maintained at the above state, and a near object is put before it, light rays will converge behind the retina. As the sharp image is b ...
autologous serum eyes drops
autologous serum eyes drops

... EYE ALLERGIES When eyes come into contact with certain compounds which the immune system (in charge of defending the body) recognises as foreign, an allergic reaction occurs. The response is the release of histamine, a chemical substance which causes irritation, reddening, burning and watering in th ...
Anatomy and Physiology
Anatomy and Physiology

... Lacrimal gland secrets tears into the upper fornix of the conjunctival sac which are spread over the surface of the cornea as a tear film by blinking of the lids. Tears accumulate at the inner canthus and drain into the lacrimal sac via the puncta & canaliculi. The sac is continuous inferiorly with ...
Anatomy and Physiology
Anatomy and Physiology

... Lacrimal gland secrets tears into the upper fornix of the conjunctival sac which are spread over the surface of the cornea as a tear film by blinking of the lids. Tears accumulate at the inner canthus and drain into the lacrimal sac via the puncta & canaliculi. The sac is continuous inferiorly with ...
STRUCTURE AND FUNCTION LABORATORY I. The Eye and V
STRUCTURE AND FUNCTION LABORATORY I. The Eye and V

... Find the DESCRIPTIONS AND LOCATIONS of the following structures on the ear model and write them out below. Be able to identify them on the ear models. ...
Equipment and instruments used within Ophthalmology
Equipment and instruments used within Ophthalmology

... 3 mirror lenses A 3 mirror lens is used for the examination of the entire ocular fundus and the iridocorneal angle within the eye. The ocular fundus is the inner lining of the eye made up of the sensory retina, the retinal pigment epithelium, bruch’s membrane, and the choroid. The iridocorneal angle ...
Assessment of Head and Neck
Assessment of Head and Neck

... • Eye composed of three layers or tunics: sclera, uvea & retina and also is filled with vitreous humor. • Sclera- white fibrous tissue, covers the “white” of the eye • Uvea consists of: ...
Visual System Powerpont file for students
Visual System Powerpont file for students

... What cells seem to have axons? What does this mean with regards to sensory coding? ...
The Eye
The Eye

... combination with the cornea. • Object focus 15.6 mm in front of cornea • Image focus 24.3 behind ...
Cole Eye Institute
Cole Eye Institute

... • Oculoplastics and Orbital Surgery: Problems of the orbit and eyelids. • Ocular Oncology: Primary and metastatic tumors of the eye and eyelids. • Pediatric Ophthalmology: Strabismus, amblyopia and congenital cataracts. • Refractive Surgery: Correction of nearsightedness, farsightedness and ...
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Human eye



The human eye is an organ that reacts to light and has several purposes. As a sense organ, the mammalian eye allows vision. Rod and cone cells in the retina allow conscious light perception and vision including color differentiation and the perception of depth. The human eye can distinguish about 10 million colors.Similar to the eyes of other mammals, the human eye's non-image-forming photosensitive ganglion cells in the retina receive light signals which affect adjustment of the size of the pupil, regulation and suppression of the hormone melatonin and entrainment of the body clock.
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