Diagnostic techniques Flashcards
DIRECT OPHTHALMOSCOPE
A direct ophthalmoscope is a device that produces an unreversed or upright image of around 15 times magnification. The direct ophthalmoscope is a critical tool used to inspect the back portion of the interior eyeball, which is called the fundus. Examination is usually best carried out in a darkened room.
INDIRECT OPHALOSCOPE
An indirect ophthalmoscope is a device that produces a reversed or inverted direct images with two to five times magnification. In comparing direct vs indirect ophthalmoscope, the indirect ophthalmoscope delivers a stronger source of light, greater opportunity for stereoscopic inspection of the eyeball interior, and a specifically designed objective lens.
Patients pupil must be fully dilated
VAN HERICK TECHNIQUE
The Van Herick technique is an eye examination method used to determine the size of the anterior chamber angle of the eye
NON- CONTACT TONOMETRY (NCT)
Non-contact tonometry is one method for testing the eye’s intraocular pressure by determining how resistant your cornea is to indentation
SLIT LAMP
a lamp which emits a narrow but intense beam of light, used for examining the interior of the eye.