Question
Identify the instrument shown in the photograph below .
A. Direct Ophthalmoscope.
B. Indirect Ophthalmoscope.
C. Retinoscope.
D. Slit lamp.
Show Answer
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Correct Answer » D
Explanation
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Ans:D. Slit lamp.
Slit lamp
- It consists of an illumination system and a binocular observation system, which when correctly aligned will result in a coincidental focus of the slit and microscope.
- The lamp facilitates an examination of the anterior segment and posterior segment of the human eye, which includes the eyelid, sclera, conjunctiva, iris, natural crystalline lens, and cornea.
- Attachments for the slit lamp
- Goldmann tonometer – IOP measurement (applanation tonometry)
- Pachometer – measures corneal thickness. Readings of 0.60mm and above suggest oedema may be present.
- Gonioscope – used to assess anterior angle.
- Binocular Indirect Ophthalmoscopy – (Volk lens or Hruby)
- Camera attachments – can be used to photograph and record the external eye of a patient
- Aesthiometry – to measure corneal sensitivity.
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