Delhi Journal of Ophthalmology

Pentacam – A Corneal Tomography System

Abhishek Upadhyaya,1  Sarah Khan,1  Pranita Sahay,1  Siddhi Goel,2  Devesh Kumawat3
1Department of Ophthalmology, Lady Hardinge Medical College, New Delhi
2Department of Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi
3Department of Ophthalmology, AIIMS, Rishikesh Medical College, New Delhi

Editor-in-Chief, Delhi Journal of Ophthalmology, Dr R.P.Centre, AIIMS.


Corresponding Author:

Pranita Sahay 
MD, DNB, FICO, FAICO (Ref SX.), FICO (Cornea)
Assistant Professor, 
Department of Ophthalmology, 
Lady Hardinge Medical College, New Delhi
Email: drpranitasahay@gmail.com


Received: 18-JUN-2020 Accepted: 22-JUN-2020 Published Online: 09-OCT-2020
DOI: https://dx.doi.org/10.7869/djo.581

Abstract
Investigative technology in the field of corneal refractive surgery has seen a rapid evolution in the last two decades. The shift from corneal topography system to corneal tomography analysis has not only improved the accuracy of corneal contour analysis but has also given an opportunity to explore various additional findings that are now considered extremely valuable in the diagnosis of forme-fruste keratoconus. This is of paramount importance in today’s world considering the high flow of patients for refractive surgery and the need for precise screening for corneal ectasia in these cases prior to surgery. Pentacam (Oculus Wetzlar, Germany), based on Schiempflug imaging, is the most commonly used corneal tomography system. It creates a 3-D imaging of the anterior segment and provides details of the anterior and posterior corneal contour, pachymetery, anterior chamber depth and pupil diameter. Recent advancement in the Pentacam software enables IOL power calculation as well phakic IOL simulation.

Keywords :Pentacam; Corneal Tomography; Keratoconus; Refractive surgery screening