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