| MISC | Eye Anatomy | Corneal Imaging | Visual Field Testing | OCT |
|---|---|---|---|---|
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Use count finger method
What should the examiner do if the patient in unable to read the largest letter on the chart or 20/400>
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What is Fuchs dystrophy
This condition affects the cornea and cause swelling and pain in severe cases>
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Epithelium- functions as a barrier, regenerates rapidly if injured.
Bowman's Membrane- Acellular, made up of collagen , structurally reinforces cornea. Stroma - 90% of cornea thickness, 78% water (layer where LASIK is performed) Descemet's Membrane- Elastic layer that forms the basement membrane Endothelium – works as pump to keep cornea in an adequate dehydrated state. Too much fluid in cornea relates to swelling causing blurred vision.
Name the 5 layers of the cornea
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Perimetry is the systematic measurement of visual field function. The two most commonly used types of perimetry are Goldmann kinetic perimetry and threshold static automated perimetry.
Define visual field testing?
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Heidelberg & Triton
What are two types of OCT machines used at CEENTA?
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What is atropine
This dilating drop last approximately 14 days.
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What is the normal visual field.
What do the numbers represent? 50 degrees superiorly
40 degrees inferiorly 50 degrees nasally 90 degrees temporally. |
What is the placido disk
this disk set the pattern of development of symmetrical rings reflected in the cornea to measure its curvature
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Unexplained vision loss or disturbance
Stroke Glaucoma
Name three reasons to perform Visual Field
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True
The OCT machine has the ability to perform anterior segment imaging.
True or False |
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What is cold sterilization?
The process using chemical sterilization using germicides is ______?
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The axial length of the eye.
What does the Lenstar and Vue Pad measure?
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What is keratoconus?
this condition is one of the most common followed with the topography
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The patient taking the visual field is looking around and clicking the button in the natural blind when checked.
Define "fixation losses"
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False
The posterior OCT is checking the optic nerve.
True or False |
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False, they are always required,
Consent forms are necessary only if the procedure is performed in the hospital.
True or False |
Macular Degeneration
This condition affects the central vision.
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Specular Microscopy - "Cell Count"
This devices uses a reflective-light microscope to visualize and analyze the corneal endothelial cell size, shape, and density to evaluate the health of this layer.
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patient is anxious, or click happy
What is false positives indicate for the visual field test?
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Optic Nerve
What is the RNFL OCT imagine looking at?
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What is a cataract>
Clouding of the lens is called_______>
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What is optic neuritis?
A patient with an APD with abnormal nerve findings may have this condition.
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What is Pachmetry?
This device measures the thickness of the cornea.
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Humphrey and Goldman
What are the two main visual field machines at CEENTA
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False
An OCT machine cannot be used to check a choroidal melanoma.
True or False |
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optic nerve
The retina receives light impulses and transmits them to the brain via the?
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