Medical Terminology OFT 140

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r13wolf
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47390
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Medical Terminology OFT 140
Updated:
2010-11-05 14:57:16
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Chapter Twelve Eye
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Symptomatic & Diagnostic Terms
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  1. Asthenopia
    • symptomatic
    • - eyestrain
    • - (asthenia= weak condition)
  2. Blepharospasm
    • symptomatic
    • - involuntary contraction of the muscles surrounding the eye
    • - result: uncontrolled blinking, & lid squeezing
  3. Diplopia
    • symptomatic
    • - double vision
  4. Exophthalmos, Exophthalus
    • symptomatic
    • - abnormal protrusion of one or both eyeball
  5. Lacrimation
    • symtomatic
    • - secretion of tears
  6. Nystagmus
    • symtomatic
    • - involuntary, rapid oscillating movement of the eyeball
    • - (nystagmos= a nodding)
  7. Photophobia
    • symptomatic
    • - extreme sensitivity to, & discomfort from, light
  8. Scotoma
    • symptomatic
    • - blind spot in vision
    • - (skotos= darkness)
  9. Refractive Errors
    (4 types)
    • diagnostic
    • - defects in the bending of light as it enters the eye, causing an improper focus on the retina
    • - 4 types: astigmatism, hyperopia, mypoia, presbyopia
  10. Astigmatism
    • diagnostic
    • - distorted vision caused by an oblong or cylindrical curvature of the lens or cornea that prevents light rays from coming to a single focus on the retina
    • - (stigma= point)
  11. Hyperopia
    • diagnostic
    • - farsightedness
    • - difficulty seeing close objects when light rays extend beyond the proper focus on the retina
  12. Myopia
    • diagnostic
    • - nearsightedness
    • - difficulty seeing distant objects when light rays fall short of the proper focus on the retina
  13. Presbyopia
    • diagnostic
    • - impaired vision owing to old-age loss of accomidation
  14. Accomidation
    • diagnostic
    • - ability of the eye to adjust focus on near objects
  15. Amblyopia
    • diagnostic
    • - decreased vision in early life due to a functional defect that can occur
    • - result of: strabismus, refractive errors (when one eye is more near-sighted, farsighted, or astigmatic than the other), or trauma
    • - usually occurs in one eye, also known as lazy eye
    • - (ambly/o= dim)
  16. Aphakia
    • diagnostic
    • - absence of the lens, usually after cataract extraction
  17. Blepharitis
    • diagnostic
    • - inflammation of the eyelid
  18. Bleparochalasis, Dermatochalasis
    • diagnostic
    • - baggy eyelid
    • - overabundance & loss of elasticity of skin on the upper eyelid
    • - causes a fold of skin to hang down over the edge of the eyelid when the eyes are open
  19. Blepharoptosis, Ptosis
    • diagnostic
    • - drooping of the eyelid usually caused by paralysis
  20. Chalazion
    • diagnostic
    • - chronic nodular inflammation of meibomian gland
    • - usually due to: blockage of a duct
    • - signs: swelling of upper or lower eyelid
    • - (chalaza= hailstone)
  21. Cataract
    • diagnostic
    • - opaque clouding of the lens causing decreased vision
  22. Conjuctivits
    • diagnostic
    • - pink eye
    • - inflammation of the conjunctiva
  23. Dacryoadenitis
    • diagnostic
    • - Iinflammation of the lacrimal gland
  24. Dacryocystitis
    • diagnostic
    • - inflammation of the tear sac
    • - (cyst/o= sac)
  25. Diabetic Retinopathy
    • diagnostic
    • - disease of the retina of in diabetics
    • - characteristics: capillary leakage, bleeding, & new vessel formation (neovascularization)
    • - leads to: scarring & loss of vision
  26. Ectropion
    • diagnostic
    • - outward turning of the rim of the eyelid
  27. Entropion
    • diagnostic
    • - inward turning of the rim of the eyelid
  28. Epiphoria
    • diagnostic
    • - abnormal overflow of tears caused by blockage of the lacrimal duct
    • - (epi= upon; phor/o= to carry or bear)
  29. Glaucoma
    • diagnostic
    • - group of diseases of the eye characterized by increased intraocular pressure
    • - results in: damage to the optic nerve, producing defects in vision
  30. Hordeolum
    • diagnostic
    • - sty
    • - an acute infection of a sebaceous gland of the eyelid
    • - (hordeum= barley)
  31. Iritis
    • diagnostic
    • - inflammation of the iris
  32. Keratitis
    • diagnostic
    • - inflammation of the cornea
  33. Macular Degeneration
    • diagnostic
    • - breakdown or thinning of the tissues in the macula
    • - results: partial or complete loss of central vision
  34. Pseudophakia
    • diagnostic
    • - eye in which the natural lens is replaced with an artificial lens implant
    • - (pseudo= false)
  35. Pterygium
    • diagnostic
    • - fibrous growth of conjunctival tissue that extends into the cornea
  36. Retinal Detachment
    • diagnostic
    • - separation of the retina from the underlying epithelium, disrupting vision & resulting in blindness if not repaired surgically
  37. Retinitis
    • diagnostic
    • - inflammation of the retina
  38. Strabismus
    • diagnostic
    • - cross eyed
    • - a condition eye misalignment caused by intraocular muscle imbalance
    • - (strabismus= a squinting; hetero= other)
  39. Heterotropia
    - 2 types
    • - esotropia
    • - exotropia
  40. Esotropia
    • diagnostic
    • - right or left eye deviates inward toward the nose
    • - (eso= inward; tropo= turing)
  41. Exotropia
    • diagnostic
    • - right or left eye deviates outward away from the nose
    • - (eso= out; tropo= turing)
  42. Scleritis
    • diagnostic
    • - inflammation of the sclera
  43. Trichiasis
    • diagnostic
    • - misdirected eyelashes that rub on the conjunctiva or cornea

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