Slit lamp examination, tonometry, and ophthalmoscopy procedure and instrument concepts tested on the NBEO.
34 cards · basic cards · AI-written, checked twice. Edit anything.
- What instrument is used to examine the anterior segment of the eye under magnification?
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The slit lamp biomicroscope.- What are the two main systems of a slit lamp?
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The illumination system and the observation (viewing) system.- What slit lamp illumination technique aims the light beam and viewing microscope at the same focal point?
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Direct focal illumination.- What slit lamp illumination technique gives a broad, low magnification overview of the lids and conjunctiva?
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Diffuse illumination.- Which slit lamp technique is used to evaluate the corneal endothelial mosaic?
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Specular reflection.- What slit lamp technique aims light at the corneal limbus so the cornea itself carries scattered light, revealing subtle opacities?
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Sclerotic scatter.- What slit lamp technique views a structure illuminated by light reflected off a deeper surface behind it?
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Retroillumination.- Which slit lamp illumination technique uses a narrow beam to determine the precise depth of a corneal lesion?
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An optic section.- What slit lamp beam shape is used to evaluate corneal layers in three dimensions?
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A parallelepiped.- What slit lamp technique estimates anterior chamber angle depth without gonioscopy?
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The Van Herick technique.- In Van Herick grading, what does a chamber-depth-to-corneal-thickness ratio of less than 1 to 4 indicate?
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A narrow, potentially occludable anterior chamber angle.- What slit lamp filter enhances visualization of fluorescein staining?
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The cobalt blue filter.- Fluorescein dye pools in and stains what type of corneal defect?
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An epithelial defect, such as an abrasion.- What is the typical magnification range of a slit lamp biomicroscope?
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About 6x to 40x.- What is considered the gold standard method for measuring intraocular pressure?
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Goldmann applanation tonometry.
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