pachymetry
Pronunciation: pak-IM-eh-tree
Measurement of corneal thickness, crucial for glaucoma assessment and refractive surgery planning.
Full Definition
Pachymetry is the precise measurement of corneal thickness, typically performed using ultrasonic or optical methods. Central corneal thickness (CCT) is a critical parameter in glaucoma management as it affects the accuracy of intraocular pressure measurements and influences treatment decisions. In refractive surgery, pachymetry ensures adequate corneal thickness remains after tissue removal to maintain structural integrity. Normal central corneal thickness ranges from approximately 520-570 micrometers, with significant variations among different populations and individuals.
Usage
Usage note: Results are expressed in micrometers (μm); specify central vs. peripheral measurements.
In Context
- "Pachymetry revealed a central corneal thickness of 485 micrometers, requiring adjustment of the pressure readings." — Glaucoma evaluation
- "Preoperative pachymetry confirmed adequate corneal thickness for the planned LASIK procedure." — Refractive surgery assessment