20 Questions
What is the primary advantage of the telescope system in slit-lamp biomicroscopy?
It provides a considerable distance between the microscope and the patient's eye.
What is the term for the coupling effect where the microscope and light are focused on the same point?
Parfocality
What is the primary difference between the Zeiss and Haag-Streit types of slit-lamp biomicroscopes?
The type of illumination system used
What is the function of the flip lever in the Grenough type of slit-lamp biomicroscope?
To change the magnification power of the microscope
What is the typical order of examination during a slit-lamp biomicroscopy procedure?
Eyelids, cornea, aqueous humour, iris, eyelid margin, lens, tear film, conjunctiva, vitreous
What type of slit-lamp device is specifically designed for handicap patients?
Hand-held device
What principle did LETZ's 1930 telescopic loupe rely on to increase working distance?
Galilean Telescope
What improvement did GOLDANN make to the biomicroscope in 1933?
Implemented a common swivel axis for the microscope and illumination system
Which component was NOT part of LITTMANN's 1950 enhancements to the slit lamp system?
Increased working distance
Which is the most significant advantage of using a slit lamp in ocular examinations?
3 dimensional view of ocular structures
What is NOT one of the prerequisites for achieving a 3D view using a slit lamp?
Joysticks for greater control
Which associated instrument would NOT typically be found with a slit lamp system?
X-ray machine
Who first attempted to develop a form of slit lamp in 1823?
Purkinje
What is the term used for the science of examination with the slit lamp?
Biomicroscopy
Which of the following is a specialty of the slit lamp?
Binocular stereoscopic view
Which major component was introduced to the slit-lamp by Vogt in 1919?
Koehler illumination system
In which year did Albert and Greenough develop the binocular microscope with a stereoscopic view?
1891
Who combined Gullstrand’s slit illumination system with Czapski’s binocular corneal microscope to develop a prototype of modern biomicroscopy?
Henker
Which aspect of the slit-lamp is considered a misnomer?
Slit-shaped illumination
Who introduced the term 'biomicroscopy' and when?
Mawas in 1925
Learn about the principles of slit-lamp biomicroscopes, including the Porro-Abbe Prism, telescope system, and parfocality. Understand how they enable processes like foreign body removal and fundus examination.
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