About Topographers


Corneal topography is a computer-assisted diagnostic tool that creates a three-dimensional map of the surface curvature of the cornea. The cornea (the front window of the eye) is responsible for about 70 percent of the eye’s focusing power. An eye with normal vision has an evenly rounded cornea, but if the cornea is too flat, too steep, or unevenly curved, less than perfect vision results. The greatest advantage of corneal topography is its ability to detect irregular conditions invisible to most conventional testing.

Laser Locators offers high-quality corneal topographers from manufacturers such as Zeiss, Oculis, Bausch & Lomb, Alcon, and Ziemer. Our used ophthalmic equipment is refurbished, recalibrated, and recertified back to factory standards by trained technicians with extensive experience in the eyecare industry. Plus, our equipment warranties guarantee customer satisfaction with every purchase.

Ziemer Galilei G4

The GALILEI G4 integrates Placido disc topography and Dual-Scheimpflug tomography in one device. This combination of technologies allows for a complete analysis of both the anterior and the posterior corneal surface. The simultaneously recorded Dual-Scheimpflug images produce reliable pachymetry and posterior curvature data, whereas the Placido ring images provide highly accurate and central anterior corneal curvature data fitted to the anterior corneal surface.

The GALILEI G4 is a state-of-the-art topographer in our industry because unlike any other topographer, it utilizes a dual camera Dual-Scheimpflug system that is unique to this model.

Small to moderate eye motions that can lead to clinically relevant surface curvatures cannot be prevented especially in elderly patients or children. The GALILEI G4 comes with a patented iris tracker which compensates for eye motion. Different than other topography and tomography devices that align data to the pupil or the apex of the cornea, the GALILEI G4 aligns all data to the visual axis using the 1st Purkinje image. This ensures consistent alignment when comparing a series of consecutive measurements over time.

With its powerful ray-traced Total Corneal Wavefront solution, the GALILEI G4 precisely measures high order aberrations for highly predictable outcomes in cataract surgery. The high order aberration display helps to identify the most suitable IOL for every patient.


NIDEK OPD-Scan III Wavefront Aberrometer

The OPD-Scan III is an autorefractor, keratometer, pupillometer (up to 9.5mm), corneal topographer, and integrated wavefront aberrometer. The OPD-Scan III completes 20 diagnostic metrics in less than 10 seconds per eye (including angle kappa, HOAs, average pupil power, RMS value, and point spread function). Easy alignment and automatic capture of wavefront aberrometry data ensure accurate readings. Wavefront aberrometry data is gathered from available zones up to a 9.5mm area, adding the capability to provide for the calculation of mesopic refractions. Blue light, 33 ring, placido disc topography is gathered in one second. Mapping methods include OPD, visual acuity corneal topography/topographer, and more.

The OPD Scan III is unique because it is the only combination model to carry these unique features all into 1 very small, compact device.


Zeiss Atlas 9000

The Humphrey ATLAS 9000 System combines sophisticated analysis and advanced imaging into a highly intuitive, user-friendly platform. The ATLAS is ideal for primary care, contact lens fitting, pathology detection, and corneal refractive surgery management applications.

The Atlas 9000 is the 6th Generation offered by Zeiss, so the model has been perfected over the years.  The technology is Placido Disk with a patented Cone-of-Focus Alignment System.

SmartCapture Analysis Technology analyzes multiple images during alignment and automatically selects the highest quality image.

MasterFit II Contact Lens Software helps streamline the fitting of gas permeable (GP) lenses and guides you through difficult and specialty fits.

The software also allows data compatibility with previous generation ATLAS Corneal Topography Systems to facilitate data management and patient follow up.

ATLAS’s exceptionally small footprint integrates computers and monitors and minimizes required tablespace.

While limited to its features when comparing to a Galilei, Orbscan Iiz, or Pentacam, the Atlas remains an excellent value for a low-cost topographer for primary care and lens fitting.


Bausch & Lomb's Orbscan IIz

Bausch & Lomb’s Orbscan IIz is a fully integrated multidimensional diagnostic system that elevates diagnostics beyond mere topography. Unlike most standard topography systems which scan the surface of the eye at standard points, the Orbscan IIz acquires over 9000 data points in 1.5 seconds to meticulously map the entire corneal surface (11 mm), and analyze elevation and curvature measurements on both the anterior and posterior surfaces of the cornea.

Bausch & Lomb’s Orbscan IIz is a diagnostic system that maps the entire corneal surface and analyzes elevation and curvature measurements on both the front and back surfaces of the cornea.

These measurements are important in identifying conditions such as keratoconus, pre-keratoconus, and corneal thinning, as those with these conditions may not be good candidates for LASIK and other procedures. Orbscan IIz diagnostics are also used to optimize outcomes in both primary treatments and enhancements.

While the Orbscan Iiz has been in our industry for nearly 20 years, it still retains a large portion of the market.  The Orbscan Iiz was the gold standard for topography and LASIK screening for many years until newer technology entered the market.


Oculus Pentacam HR

The Pentacam HR is the most asked for non-laser related items in our entire inventory system.  Oculus has captured a large portion of the topography market since introducing this model to the industry in the late 2000s.

Within just two seconds the Pentacam HR supplies you with precise diagnostic data on the entire anterior eye segment. The degree of corneal or crystalline lens density is made visible by the light-scattering properties of the crystalline lens and is automatically quantified by the software. Measurement of the anterior and posterior corneal surfaces supplies the total refractive power as well as the thickness of the cornea over its entire area. The data on the posterior surface provides optimal assistance in the early detection of ectatic changes.

The rotating scan supplies a large number of data points in the center of the cornea. A supplementary pupil camera captures eye movements during the examination for subsequent automatic correction of measured data.

While there are also Basic and Classic models, only the HR model has a high-resolution camera that can be compared to the Galilei G4.

All versions of the Pentacam and the Galilei are exceptionally rare and desirable on the used market.

Unsure of which model is best for you? Contact us today for a complete consultation.

About Joey Colarulo Laser Locators linkedin-button

Vice President

Joey has been the Vice President of Laser Locators since March 2015 and a Managing Partner since 2012. He joined the company in 2011.

Joey has significantly contributed to Laser Locators' growth, including the development of a full service and parts department. He has streamlined the sales and procurement departments by redeveloping processes and implementing new systems. Through Joey's efforts, Laser Locators has tripled its sales volume and added 13 new positions.

Joey has over 20 years of experience in global internet sales and marketing. His expertise in analyzing the marketplace and leverage the latest e-commerce technologies has enabled Joey to drive exponential sales growth year over year.

Originally from Philadelphia, Joey earned his Bachelor's degree in Financial Management and graduated Magna Cum Laude from Rowan University.

Outside of work, Joey is involved in the Westchase Charitable Foundation, a local non-profit that provides direct assistance to those in need. His interests include vintage BMWs and rare sports cards.