cu-8

• Maintains blood supply to the eye


  choroid
• Maintains the placement of the retina and the eyeballs spherical shape

  vitreous humor
• Refracts light rays entering the eye

  cornea
• Permits light to enter the eyes

  pupil
• Refracts and focuses light into the retina

  lens
• Receives visual stimuli and transmits images to the brain for processing

  retina
• Maintains the eye size and shape


  sclera
• Everted eyelashes. can lead to excessive drying of eyes

  Ectropion
• visible sclera between iris and upper lid. usually seen in patients with hyperthyroidism


  Exophthalmos
• Ptosis of both eyelids

  Myasthenia gravis
• accumulation of lipids in the skin

  Xanthelasma
• ability to discern letters or numbers at a given distance

  visual acuity
• Have client stand 20 ft. away. Cover up 1 eye with pad.


  Snellen chart
• Dutch ophthalmologist,


  Herman Snellen
• In the Snellen Chart test Uncovered eyes will read the TOP letter at what distance

  20 ft
• OD


  right eye
• OS


  left eye
• OU


  both eyes
• hold pocket vision screener distance from eye and proceed testing as the chart

  14 inches
• This is used for patients with known nearsightedness

  POCKET VISION SCREENER
• 20 / 20


  normal acuity
• 20 / 15


  better vision
• 20 / 200


  legally blind
• A card which paragraphs of text are printed is used in testing NEARVISION ACUITY. 


  JAEGER TEST
• JAEGER TEST distance


  14 inches
• Nearsightedness


  myopia
• Farsightedness


  hyperopia
• Farsightedness due to aging

  presbyopia
• Also known as the “Tumbling E” Eye Chart○Useful to test the distance visual acuity ofCHILDREN or ADULTS who can not communicate verbally due to physical /mental disability, language barrier or other reasons

  Snellen E chart
• Color perception/vision test forRED – GREEN color deficiencies

  Ishihara test
• Ishihara test is Named after the designer

  Shinobu Ishihara
• Done at a distance of 3 meter . Consist of a set of seven card with each card containing a single picture. Usually used for 2 years old child and older

  allen card test
• Excessively firm or tender globe

  glaucoma
• Red palpebral and bulbar conjunctiva

  Conjunctivitis
• Pale pink conjunctiva


  Anemia
• Growth or thickening of conjunctiva from inner canthal area toward iris

  Pterygium, pinguecula
• Eye injury


  Subconjunctival hemorrhage
• Benign pigmented congenital discoloration


  Nevus
• Benign growth


  Papilloma
• collect tears produced by the lacrimal gland

  puncta