Morphometric analysis of in vitro human crystalline lenses using digital shadow photogrammetry.

There is a great need for accurate biometric data on human lenses. To meet this, a compact tabletop optical comparator, the minishadowgraph, was built for measuring isolated eye lens shape and dimensions while the lens was fully immersed in supporting medium. The instrument was based around a specially designed cell and an illumination system which permitted image recording in both sagittal and equatorial (coronal) directions.

Long-term outcomes of the aphakic snap-on Boston type I keratoprosthesis at the Bascom Palmer Eye Institute.

Purpose: To determine the indications, long-term clinical and visual outcomes, and complications of the aphakic snap-on type I Boston keratoprosthesis (KPro).

Design: Retrospective, non-comparative case series.

Methods: Forty-five eyes of 43 patients with type I aphakic snap-on KPros with at least 1 year of follow-up were included.