keratometry
Pronunciation: ker-ah-TOM-eh-tree
The measurement of corneal curvature, essential for calculating intraocular lens power and assessing astigmatism.
Full Definition
Keratometry is a diagnostic technique that measures the curvature of the central cornea in different meridians to determine corneal power and detect astigmatism. This measurement is fundamental in cataract surgery for accurate intraocular lens power calculations and in refractive surgery planning. Modern keratometers can provide both manual and automated measurements, with some devices offering additional features such as corneal topography and wavefront analysis. Accurate keratometry is essential for achieving optimal postoperative visual outcomes and minimizing refractive surprises.
Usage
Usage note: Results are typically expressed in diopters (D) and recorded as K1 and K2 values.
In Context
- "Keratometry readings revealed significant with-the-rule astigmatism requiring toric IOL implantation." — Preoperative assessment
- "Serial keratometry measurements confirmed stable corneal curvature following the penetrating keratoplasty." — Postoperative monitoring