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Biomicroscopy
Dr Frank FAMOSE
DVM, CES Ophtalmologie
Ekaterinburg May 2010
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What is biomicroscopy ?
Binocular microscope High power light beam
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For what use ?
Other structures
Anterior segment examination
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Historique
• 1911 : first Slit Lamp (Gullstrand)
• 1953-1959 : first veterinary publications
(Uberreiter)
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Technical aspects
• Binocular microscope
• Magnification 5-40x
• Zoom (optical or digital)
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Technical aspects
• Light source
• External, pivoting,
adjustable
• Filters
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Technical aspects
• Same focus for
microscope and light
• Corneal and lens
€ optical cut •
• Retroillumination
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Available devices
• Static or table-mounted • Portable slit lamps :
slit lamps : Topcon, Kowa, Zeiss, …
Zeiss,…
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How to perform a (good) slit-lamp
exam ?
• Adjustements
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How to perform a (good) slit-lamp
exam ?
• Animal restraint
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How to perform a (good) slit-lamp
exam ?
• Examination with
diffuse light
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How to perform a (good) slit-lamp
exam ?
• Examination with
large slit source
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How to perform a (good) slit-lamp
exam ?
• Examination with
focal slit source
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What can we see ?
• Opacities
• Modification of shape or width
• R•fraction
• Vascularisation
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Corneal ulcer
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Corneal ulcer
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Corneal vascularisation
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Corneal vascularisation
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Vascularisation
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Lens Opacities
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Anterior capsular Opacities
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Refraction
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Refraction
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Opacities
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Refraction
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Opacities and refraction
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Refraction
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Opacities
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Conclusion
• Essential exam in ophtalmology
• Only adnexae and anterior chamber
• Many optic capabilities
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