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Biomicroscopy

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Dr Frank FAMOSE

DVM, CES Ophtalmologie

Ekaterinburg May 2010

What is biomicroscopy ?

Binocular microscope High power light beam

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For what use ?

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Anterior segment examination

Other structures

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-mountedslit lamps : Topcon, Zeiss,…

• Portable slit lamps : Kowa, Zeiss, …

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How to perform a (good) slit-lampexam ?

• Adjustements

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How to perform a (good) slit-lampexam ?

• Animal restraint

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How to perform a (good) slit-lampexam ?

• Examination withdiffuse light

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How to perform a (good) slit-lampexam ?

• Examination withlarge slit source

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How to perform a (good) slit-lampexam ?

• Examination withfocal 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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