Keratometry

Keratometry is a fundamental measurement in ophthalmology used to assess the curvature of the cornea, crucial for diagnosing conditions like astigmatism and planning corrective procedures such as cataract surgery or contact lens fitting. It involves projecting rings of light onto the corneal surface and measuring their reflection to determine the curvature of the cornea's anterior surface. This measurement, expressed in diopters (D), helps ophthalmologists understand the refractive power of the cornea and aids in calculating intraocular lens power for cataract surgery. Keratometry is also valuable in monitoring corneal changes over time in conditions like keratoconus. Advanced technologies such as automated keratometers and corneal topography systems have enhanced the precision and reliability of keratometric measurements, contributing to more accurate diagnoses and treatment outcomes in ophthalmic practice.