LOINC long common name : PhenX - contact biometry protocol 110101;
LOINC short name : Contact biometry proto;
LOINC description : The axial length of the eye and central corneal thickness is measured in this protocol
using the Ultrasonic A scan/pachymeter DGH 4000B SBH IOL Computation module. (A-Scan
pachymeter, Ultrasonic, Exton, PA) which requires direct contact with the cornea.
Three measurements are taken on each eye for both axial length and central corneal
thickness. Results of all measurements are then printed. The WG recommends that three
readings be taken and recorded from each eye for both axial length and central corneal
thickness (measurements in millimeters). The WG recommends that the central corneal
thickness-pachymetry measurements be taken first followed by the axial length measurements,
as presented in this protocol. This protocol for contact biometry uses the ultrasonic
A scan/pachymeter DGH 4000B SBH IOL Computation module. Other instruments can be used
to measure ocular biometry including axial length and central corneal thickness. If
other instruments are used, the reproducibility of the measurements should be comparable
to those acquired with this protocol. In addition, when other instruments are used
to collect these measurements, the manufacturer and model of equipment should be recorded.
These other devices may require some different steps than are described in this protocol.
Investigators should follow the equipment manufacturer's instructions to ensure quality
control.;
Has component