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Glenn L. Stoller, MD; Yale L. Fisher, MD; David Maberley, MD

Arch Ophthalmol. 1998;116:1688-1689.

Ophthalmic endoscopes allow examination of intraocular structures when traditional surgical microscopic visualization is limited or impossible. Periodic evaluation of the optical precision of these instruments is essential to ensure optimal intraoperative performance. A test card has been developed to aid in the calibration of ophthalmic endoscopes. Its 5 test targets assess white balance and fiberoptic bundle integrity, focus and resolution, orientation, color fidelity, and angle of view.

From the Department of Ophthalmology, The New York Hospital–Cornell Medical Center, New York (Drs Stoller and Fisher); Ophthalmic Consultants of Long Island, Rockville Center (Dr Stoller); Vitreous-Retina-Macula Consultants of New York, New York, (Dr Fisher); Manhattan Eye, Ear, and Throat Hospital (Drs Stoller, Fisher, and Maberly), New York, NY. The authors have no proprietary interest in the test card or endoscope.

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