slit lamp
- noun
- /slɪt læmp/
- Specialized
- The sensitivity of conjunctival biopsy has been reported to be as high as 75% and is most useful when tissue from a yellowish-gray nodule visualized with a slit lamp is sampled.
- slit lamp photograph
Examples
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We used a slit lamp or a torch and a 20-diopter magnifying loupe to examine the anterior segment of the eye.
Academic text (2009) -
Her slit lamp exam was unremarkable.
Academic text (2007) -
Beyond the propped-open swinging doors were several ophthalmologic examining rooms, each with its barber-like chair and attached slit lamp.
Fiction book (1991) -
PHOTO (BLACK & WHITE): Figure 1a: Preoperative slit lamp photograph showing corneal stromal and epithelial edema with bullae.
Academic text (2007) -
The doctor used a slit lamp to examine the health of my retina and optic nerve.
-
During the eye examination, the slit lamp helped identify any abnormalities in the anterior segment.
-
With the slit lamp, the optometrist was able to thoroughly check my eyes for any signs of disease.
How Specialized
- Specialized
- Specialized
- Specialized
Surface Forms
Morphology
The noun compound 'slit lamp' is directly compositional: 'slit' (narrow opening/beam) + 'lamp' (light source) clearly yields a lamp that produces a narrow beam of light. Although it names a specific medical instrument, its basic function is inferable from the constituents and similar constructions occur cross-linguistically, so a B1 learner who knows both words can understand the meaning.
Etymology
Slit lamp comes from how the tool works: it is a lamp that makes a thin slit of light, a 'narrow beam' that shines into the eye. So doctors use a slit lamp to 'look inside the eye', which is why the name fits.