Calculation of Scleral Contact Lenses By Quadrants, with Elise Kramer – Scleral Lens Society

This video was originally produced in Spanish. You can enable subtitles in the video and also automatic translation (use the configuration icons in the lower right corner of the video).

PRESENTATION SYNOPSIS

So much amazing technology is available today for designing scleral lenses, but before we jump into the future, it’s important to understand where this is all coming from. It is very important that a scleral lens is stable and does not rotate so that the patient has the clearest and most comfortable vision possible. Our goal with the improvement and development of the scleral lens stabilization technique is to reduce the number of repetitions (which is a win-win situation: the professional, the patient, and the lens manufacturers) and increase our initial percentage. of success with scleral lens fitting. Sagittal height and scleral shape are the two most important factors that influence the fit of a scleral contact lens. Until recently, these factors were difficult to measure, forcing most practitioners to rely on the “art” of fitting diagnostic lenses. Previous studies using optical coherence tomography (OCT) have shown that the scleral surface is not rotationally symmetric and that it becomes more asymmetric with increasing distance from the limbus (Van der Worp, 2010). Recently, the development of corneascleral topography has given us the ability to comprehensively study the conjunctival scleral shape. Scleral measurement and scleral impression-based lenses allow more efficient and accurate determination of lens design. The results suggest that most eyes may benefit more from the custom haptics on the posterior surface of a scleral lens than a toric design.

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