chapter 18 eyes

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chapter 18 eyes
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2010-05-02 23:42:10
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chapter 18 eyes
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  1. tough white outer coat of the eyeball
    sclera
  2. membrane lining the eyelids and covering the eyeballs
    conjunctiva
  3. transparent anterior part of the eye
    cornea
  4. the middle, vascular coat of the eye, between the sclera and the retina
    choroid
  5. pigmented membrane behind the cornea, perforated by the pupil
    iris
  6. opening in the center through which light enters the eye
    pupil
  7. transparent body separating the posterior chamber and constituting the refracting mechanism of the eye
    lens
  8. eye muscle capable of changing lens shape during contraction and relaxation
    ciliary muscle
  9. watery liquid in chamber in front of the lens; it circulates through the anterior chamber of the eye
    aqueous humor
  10. jellylike transparent substance in the posterior chamber
    vitreous humor
  11. innermost layer of the eyeball, containing elements for reception and transmission of visual stimuli
    retina
  12. dimness of vision without a detectable organic lesion of the eye; related to absence, weakness, or paralysis of an eye muscle
    amblyopia
  13. condition characterized by irregular cornea and lens of the eye; corrected with lenses
    astigmatism
  14. inflammation of the eyelids
    blepharitis
  15. drooping of upper eyelid
    blepharoptosis
  16. opaque (not clear) lens of the eye
    cataract
  17. a small eyelid mass resulting from chronic inflammation of a meibomian gland
    chalazion
  18. popular term from any deviation from normal perception of color
    color blindness
  19. inflammation of the conjunctivia
    conjunctivitis
  20. a local inflammation of the cornea caused by injury or inflammation
    corneal ulcer
  21. inflammation of the lacrimal gland
    dacryoadenitis
  22. inflammation of the lacrimal sac
    dacryocystitis
  23. a lacrimal calculus (stone)
    dacryolith
  24. separation of the inner layers of the retina from the pigment epithelium
    detached retina
  25. scarring of the capillaries of the retina as a consequence of DM of long duration. retinal defects of DM include abnormal dilation of the retinal veins, hemorrhage, microaneurysms, and neovascularization (new blood vessels forming near the optic disk causing leakage of blood). effects cause permanent damage and will lead to blindness. leading cause of blindness in U.S.
    diabetic retinopathy
  26. "spots before the eyes"; these seposits in the vitreous of the eye usually move about and are probably a benign degenerative change. also seen in hypertension
    floaters (in vitreous)
  27. any object not belonging to the eye; hazards depending on circumstances
    foreign body in the eye
  28. eye disease characterized by an increase in intraocular pressure related to alterations in circulation in vitreous humor, causing pathologic changes and visual defects
    glaucoma
  29. blood escaping from the vessels, and bleeding from beneath the conjunctiva
    hemorrhage (subconjunctival)
  30. involving the fifth cranial nerve (forehead, eyelid, and cornea), this infection by a herpes virus can be serious
    herpes zoster (ophthalmic)
  31. farsightedness
    hyperopia
  32. eye injuries include foreign bodies, contusions, lacerations, burns, etc
    injury
  33. inflammation of the iris
    iritis
  34. conical protrusion of the central part of the cornea
    keratoconus
  35. deterioration of the macula of the eye, resulting in a severe loss of central vision in the affected eye
    macular degeneration
  36. a small localized swelling of the eyelid resulting from obstruction and retained secretions of the meibomian glands. a nonmalignant condition; often requires surgery for correction
    meibomian cyst
  37. involuntary rapid movement (horizontal, vertical, rotary, or mixed) of the eyeball
    nystagmus
  38. edema of the optic disk
    papilledema
  39. diminution of accomodations of the lens of the eye caused by loss of elasticity, normally occurring with again; farsightedness
    presbyopia
  40. inflammation of the retina
    retinitis
  41. a tumor arising from the retinal cells
    retinoblastoma
  42. quint; deviation of the eye from normal; crossed eyes; usually correctable
    strabismus
  43. inflammation of the sebaceous gland of the eyelid
    stye (or hordeolum)
  44. a contagious disease of the conjunctivia and cornea, producing photophobia, pain, and lacrimation; uncommon
    trachoma
  45. inflammation of the uvea (iris and blood vessels)
    uveitis
  46. a surgical excision of the lens of the eye. special lens or glasses are prescribed
    cataract extraction
  47. application of extremely low temperature for the removal of a cataractous lens
    cryoextraction
  48. fixation of a detached retina using extremely low temperature instead of the laser beam
    cryoretinopexy
  49. incision of the lacrimal sac and duct
    dacryocystotomy
  50. surgical removal of the eye
    enucleation
  51. examination and study of the fundus of the eye by means of an ophthalmoscope
    fundoscopy
  52. instrument for demonstrating ocular motility and rotation
    gonioscopy
  53. excision of part of the iris
    iridectomy
  54. excision of part of the iris in glaucoma
    iridencleisis
  55. plastic surgery of the cornea; corneal grafting
    keratoplasty
  56. using the laser beam to treat retinal detachment
    laser photocoagulation
  57. growth of the conjunctiva: neovascularization that invades the cornea; it can be removed surgically
    pterygium surgery
  58. an instrument used in ophthalmology for examining the conjunctiva, lens, vitreous humor, iris, and cornea. a high-intensity beam of light is projected through a narrow slit and a cross-section of the illuminated part of the eye is examined through a magnifying lens
    slit lamp
  59. instrument for measuring tension or pressure, especially intraocular pressure
    tonometer
  60. measurement of tension or pressure, e.g. intraocular pressure
    tonometry
  61. excision of fibrous bands or connective tissue
    trabeculectomy
  62. aspiration of vitreous fluid and replacement with saline solution
    vitrectomy
  63. adjustment of the eye for seeing objects at various distances
    accommodation
  64. inequality in size of the pupils of the eyes
    anisocoria
  65. a system of printing for the blind consisting of raised dots and prints that can be read by touch
    Braille
  66. opening through which aqueous humor must flow out of pressure in the eye increases resulting in glaucoma
    canal of Schlemm
  67. the angle at either end of the fissure between the eyelids
    canthus (pl. canthi)
  68. with correction (glasses of lenses)
    CC
  69. an instrument for applying extreme cold to tissue
    cryoprobe
  70. an instrument for opening the lens capsule
    cystitome
  71. unit of measure for lenses
    diopter
  72. recording of eye movements to provide objective documentation of induced and spontaneous nystagmus
    electronystagmography
  73. normal vision
    emmetropia
  74. storage for donor organs
    eye bank
  75. the back portion of the interior of the eyeball, visible through the pupil by use of the ophthalmoscope
    fundus
  76. an instrument containing a perforated mirror and lenses used to examine the interior of the eye; also spelled "fundoscope"
    funduscope (or ophthalmoscope)
  77. trained dogs for the blind; also called seeing-eye dogs
    guide dogs
  78. secretion and discharge of tears
    lacrimation
  79. a device that transfers light of various frequencies into an extremely intense, small beam of radiation. it is used as a tool in surgery, in diagnosis, and in physiologic studies
    laser
  80. device for obtaining eyeglass prescriptions
    lensometer
  81. a drug that causes contraction of the pupil
    miotic (myotic)
  82. a drug that dilates the pupil
    mydriatic
  83. abbreviation for oculus dexter (right eye)
    OD
  84. instrument containing a perforated mirror and lenses, used to examine the interior of the eye; also called funduscope
    ophthalmoscope
  85. abbreviation for oculus sinister
    (left eye)
  86. abbreviation for oculus uterque (each eye) or oculus unitas (both eyes)
    OU
  87. peripheral vision
    vision at the outer edges when the eyes are looking straight ahead
  88. acronym for Pupils Equal, Round, React to Light, Accomodation
    PERRLA (or PERLA)
  89. the determination of the refractive errors of the eye and their correction with glasses or lenses
    refractive error
  90. without correction (glasses or lenses)
    SC
  91. one of several charts used in testing visual acuity. letters, numbers, or symbols are arranged on the chart in decreasing size from top to bottom
    Snellen eye chart
  92. clarity or clearness of vision
    visual acuity (VA)
  93. a person who can read what the average person can read at 20 feet
    20/20 vision

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