The Eye

1
The Eye

• Exploring Medical Language
• Chapter 12

2
Anatomy

• Located in the orbit
• Bony protective cavity
• Iris colored muscular
• Pupil opening in the iris
• Dilates and constricts
• Lens
• Focuses and bends light
• Located behind pupil

3
Anatomy

• Aqueous humor watery fluid in anterior cavity
  of the eye
• Vitreous humor jellylike substance that gives
  shape to the eye
• Lacrimal ducts drains tears
• Optic nerve carries visual impulses to the brain

4
Word Parts

• ocul/o..eye
• ophthalm/oeye
• cry/ocold
• dipl/otwo, double
• ton/otension, pressure
• bi-, bin-...two
• -plegia.paralysis

5
Disease Disorder Terms

• Blepharoptosis
• drooping of the eyelid
• ptosis (common name)
• Conjunctivitis
• pinkeye
• caused by bacteria or virus
• spread by contact with secretions

6
Disease Disorder Terms

• Diplopia
• double vision
• Photophobia
• abnormal fear of or sensitivity to light

7
Disease Disorder Terms

• Cataract
• clouding of the lens
• like vasoline on glasses
• Detached retina
• emergency situation
• separation of retina in back of eye

8
Disease Disorder Terms

• Glaucoma
• abnormal increase of intraocular pressure
• damages optic nerve
• can lead to blindness
• Hyperopia
• farsightedness
• have trouble seeing up close

9
Disease Disorder Terms

• Myopia
• nearsightedness
• Nyctalopia
• poor vision at night

10
Disease Disorder Terms

• Nystagmus
• Involuntary, jerking eye movements
• Presbyopia
• Impaired vision as a result of aging

11
Disease Disorder Terms

• Strabismus
• Abnormal squinting or crossed eyes
• Sty
• Infection of an oil gland of the eyelid

12
Surgical Terms

• Enucleation
• Surgical removal of the eyeball

13
Diagnostic Terms

• Opthalmoscope
• Instrument used for visual examination
• Tonometry
• Measurement of pressure within the eye

14
Complementary Terms

• Intraocular
• Pertaining to within the eye

Intraocular lens
15
Complementary Terms

• Lacrimal
• Pertaining to tears or tear ducts

16
Complementary Terms

• Opththalmologist
• Doctor who studies and treats diseases of the eye
• Optic
• Pertaining to vision

17
Complementary Terms

• Optician
• Specialist who fills prescriptions for lenses
• Cannot prescribe
• Optometrist
• Professional who prescribes corrective lenses

18
Complementary Terms

• Visual acuity
• Sharpness of vision

Common test
19
Abbreviations

• OD
• Right eye
• OS
• Left eye
• OU
• Each eye both eyes