DGH 555B


Pachette 4


Pachette 4



The Pachette 4 is globally recognized as the leading portable, desktop pachymeter. It’s designed for performance, portability and convenience. Turn on power, contact the probe tip to any location on the cornea, including the periphery, and the Pachette 4, using DGH’s proven measurement algorithm, will obtain accurate, reproducible measurements in a fraction of a second. The angled probe can be detached for cleaning, making the Pachette 4 perfect for intra-operative use. Clinical applications for corneal thickness measurements include preoperative evaluation of laser correction procedures, CCT measurements for glaucoma screening, accurate monitoring of keratoconus treatment, and in the general assessment of corneal health related to pathologies.


Pachette 4 Power on

Turn on power and the Pachette 4 is ready to take measurements. Contact the probe tip to any location on the cornea, and the Pachette 4 will obtain and store up to 25 measurements in a fraction of a second. Audible feedback indicates when a valid measurement is complete. After bilateral measurements have been completed, the measurements can be reviewed on the 16 character by 2-line LCD display which provides easy visibility of the current measurement, the average, and the standard deviation of all measurements taken.

Pachette 4 Proven Accuracy

Proven measurement algorithm yields accurate, reproducible measurements in a fraction of a second. The measurement capability of the Pachette 4 is an enhancement of the proven technology that has set the standard for measuring corneal thickness since 1982.

Pachette 4 Mapping Mode

When you receive your Pachette 4, the unit is ready to take corneal measurements at initial power up. It is not necessary to set up or configure any parameters. However, the Pachette 4 has been designed to allow the user to personalize the operational mode, number of measurements taken, adjustment of time delays etc. Once modified, these parameters are permanently stored in its memory.


The Pachette 4 can be upgraded to extend its range from the standard range of 200-1100 microns, to an extended range of 95-1100 microns to help operators measure corneal thickness during corneal procedures. The Pachette 4 probe is detachable for easy cleaning and replacement. The probe is sterilizable with a cold soak so it can be used intra-operatively.

Portable Mode

The Pachette 4 probe can be stored in the custom molded probe holder cavity and cord wrap, protecting the probe during transportation or storage.

Pachette 4 Battery Type

The Pachette 4 runs on two (2) alkaline AA batteries. It’s supplied with four (4) alkaline batteries, and can also be used with NiMh rechargeable batteries.

Pachette 4 Mapping Mode

Mapping Mode for obtaining and storing up to 33 actual and biased corneal mapped measurements. These measurements can be obtained at any point on the cornea, including the periphery.

Desktop Stand Pachette 4

Pachette 4 is designed for performance, portability and convenience while using limited counter space. The Pachette 4 is encased in a durable rubber holster with a built-in tilt stand. The Pachette 4 has a lifetime of 10 years and an industry leading warranty.



  1. Input Patient Data: Using the DGH Connect Software (Windows® PC), enter patient ID information for up to 20 patients and wirelessly transmit to the Pachette 4.
  2. Acquire: The Pachette 4 stores all patient ID information in its memory for reference when measuring patients.
  3. Reports: After the measurements sequence is complete, wirelessly transmit all results and patient information directly to a Bluetooth® enabled printer.


  1. Reports: After measurements sequence is complete, wirelessly transmit all results and patient information back to the PC for report generation and printing.


*Feature only available in Bluetooth® option devices.

Pachette 4 software

DGH 555B Pachette 4 Specifications

Measurement Range 200 to 1100 µm
Measurement Range (Flap Option) 95 to 1100 µm
Accuracy ± 5 µm
Internal Clock Accuracy ± 0.002%
Resolution 1 µm
Power Management Two (2) AA Batteries

Unit Dimensions

Dimensions 6.3” (160 mm) L x 4.1” (104 mm) W x 2.2” (56 mm) D
Weight 1.4 lbs  (635 Grams)
Probe Dimensions 3.5” (88.9 mm) L x 0.85: (21.59 mm) W x 0.25” (6.35 mm)
Connection Type Bluetooth v2.0

Software Features

Single Page Pachymetry Report or a Direct Thermal Printout via compatible Bluetooth® Printer (optional)

Software Application Requirements

Hardware Requirements Intel i3 or higher,  2GB RAM or higher,  1 GB Freespace

Bluetooth Radio v2.1 or higher,  1024 x 768 display resolution or higher

Operating System Requirements  

Windows XP (32 bit) or higher (32 or 64 bit)




Pachette 4 Brochure Cover


DGH 555B Operator Manual

Devices shown in Photographs are with optional Bluetooth® feature.

DGH Technology, Inc.

110 Summit Drive, Suite B
Exton, PA 19341

Phone: (610) 594-9100
Fax: (610) 594-0390
Toll Free: (800) 722-3883


Eastern U.S.
Contact: Russell Schlage
(727) 692-8327

Western U.S.
Contact: Rafael Ramirez
(619) 993-4608

Contact: Niket Dave
(312) 918 9808

Contact: Darrell Glasgow
(800) 722-3883



Purchasing DGH products directly from DGH is the only way to ensure that you are purchasing the appropriate products for your practice at the best price possible. Simply contact DGH to arrange a personal consultation with our experienced Sales and Service Representatives who have the technical expertise required to determine which DGH products are best suited to your practice, and they will also discuss how the benefits of the Direct Purchase Option maximize the total value of your purchase.



  • Our Sales and Service Representatives are your personal DGH liaisons for all your pre-sales and post-sales needs.
  • Special discount pricing for qualified buyers on all DGH products.
  • On-line demonstrations.
  • Customer Satisfaction Guarantee: Return any purchase within the first 30 days for a full refund.
  • Discounted pricing for a new DGH product when trading in a used DGH product.
  • Special extended warranty offers.
  • Priority Customer Service.
  • Customized financial options available through DGH affiliates.


Note: The DGH Direct Purchase Option is available only for customers based in the USA.