Eye & Adnexa - Diagnostics & Procedures Flashcards
(32 cards)
What do diopters measure?
How much near or farsightedness you have
Negative number for near sightedness, positive for far sightedness, and also quantifies astigmatism.
What is fluorescein staining used for?
Differential staining of corneal abnormalities
Involves dropping dye into the eye.
What does gonioscopy examine?
Angle of anterior chamber of eye
Used to diagnose glaucoma and ocular movement.
What is ophthalmoscopy?
Visual examination of interior of eye with an ophthalmoscope.
What does the Schirmer tear test determine?
Amount of tear production
Useful to diagnose xerophthalmia.
What is a slit lamp examination?
Part of routine eye exam
Allows viewing of various layers of the eye.
What is tonometry used for?
Measurement of intraocular pressure
Used in diagnosis of glaucoma.
What is the Snellen test?
Visual acuity test using a chart with letters
Normal vision is 20/20.
What does a visual field test measure?
Area of visual space visible to an individual.
What is blepharoplasty?
Forming a new eyelid
May correct blepharoptosis or blepharochalasis.
What is canthorrhaphy?
Suturing upper and lower eyelids to prevent them from opening
Also known as tarsorraphy or blepharorraphy.
What does conjunctivoplasty involve?
Forming a new or restored conjunctiva
May require grafting tissue from cheek or other eye.
What is cyclodiathermy?
Use of heat to destroy part of ciliary body
Used for treatment of glaucoma.
What is enucleation of the eyeball?
Removal of entire eyeball.
What is evisceration of the eyeball?
Removal of content of eyeball, leaving sclera intact.
What does an iridectomy involve?
Cutting out all or part of the iris
Allows aqueous humor to flow out of anterior chamber.
What is iridoplasty?
Forming a new or restored iris with laser treatment
Enhances drainage of aqueous humor, used for closed angle glaucoma.
What does keratectomy entail?
Cutting out all or part of the cornea to remove a lesion.
What is keratoplasty?
Forming a new or restored cornea
Can involve transplantation of corneal tissue.
What is LASIK?
Laser Assisted in situ Keratomileusis
Flap procedure using an excimer laser to remove material under the corneal flap
Corrects astigmatism, myopia, and hyperopia.
What does phacoemulsification do?
Destroys and removes content of lens
Treats cataracts.
What is radial keratotomy?
Cutting cornea in spoke-like fashion to flatten it and correct myopia.
What is vitrectomy?
Removal of part or all of vitreous humor
Usually done to treat retinal detachment.
What are antibiotics used for?
Treat bacterial infections
Examples include gentamicin and ciprofloxacin.
