Optical properties of miniaturized endoscopes for ophthalmic use

Pascal O. Rol; Reinhard Jenny; Dominik Beck; Franz Fankhauser Sr.; Peter F. Niederer

doi:10.1117/12.204800

1 July 1995 Optical properties of miniaturized endoscopes for ophthalmic use

Pascal O. Rol, Reinhard Jenny, Dominik Beck, Franz Fankhauser Sr., Peter F. Niederer

Author Affiliations +

Optical Engineering, Vol. 34, Issue 7, (July 1995). https://doi.org/10.1117/12.204800

Abstract

Endoscopes for use in ophthalmology can now be manufactured with overall intraocular diameters smaller than 0.89 mm. Endoscopes based on gradient-index lenses yield a higher resolution than those making use of ordered fiber bundles having the same diameter. Likewise, endoscopes with optical elements having a diameter of 0.50 mm yield a higher resolution than those with smaller diameter (0.35 mm). Thanks to the miniaturization, a working channel can also be integrated within the tube of the endoscope instead of being a part of the illumination bundle. This allows the design of new endoscopic devices including various surgical instruments. Preference is given to an endoscope with an integrated aspiration/irrigation system or with a fiber for laser therapy. The potential phototoxicity of these systems is briefly discussed.

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Pascal O. Rol, Reinhard Jenny, Dominik Beck, Franz Fankhauser Sr., and Peter F. Niederer "Optical properties of miniaturized endoscopes for ophthalmic use," Optical Engineering 34(7), (1 July 1995). https://doi.org/10.1117/12.204800

Published: 1 July 1995

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