Optical Biometer + Corneal Topographer

Build, Manage, and Grow Your Myopia Practice

MYAH offers an efficient, affordable and repeatable way to baseline axial length and monitor change over time. This versatile instrument also includes corneal topography, pupillometry, anterior cornea wavefront analysis and contact lens fitting software making it a comprehensive device for monitoring axial length, assessing visual quality and fitting specialty lenses.

Watch this quick MYAH demo


Product Features

MYAH Features

Axial length

Trend reports
(AL, Rx power, corneal power)

gland imaging

Corneal topography,
aberrometry, and WTW

Static and dynamic

Patient friendly
with rapid capture

One easy-to-use instrument gives you a wealth of information to help you build your myopia management and specialty contact lens practice.

MYAH in Clinical Practice

Key Features

  • OPTICAL BIOMETRY – Highly accurate, repeatable, and non-invasive method for tracking axial length.
  • TOPOGRAPHY – Corneal topography with visit-to-visit comparison and white-to-white measurements.
  • MEIBOGRAPHY – Visualize and capture images of the meibomian glands.
  • PUPIL ASSESSMENT – Dynamic pupillometry assesses size and light reflexes of the pupil.
  • LENS FITTING – Contact lens fitting tools including database of conventional RGP, Ortho-K lenses, and fluorescein simulation.
  • ABERROMETRY MAPS – Simulate the effects of higher-order aberrations on visual quality.
  • USER-FRIENDLY – Compact and easy to operate.
  • EASILY REVIEW DATA – Access patient data on any connected PC in your network.


Access your
step-by-step myopia

From Start to Success: Your Myopia Management Roadmap

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Keratoscopic Cone

24 rings equally distributed on a 43 D sphere

Analyzed Points

Over 100,000

Measured Points

Over 6,000

Corneal Coverage

Up to 9.8 mm on a sphere of radius 8.00 mm (42.2 diopters with n=1.3375)

Diopter Power Range

28.00 – 67.50 D

Display Resolution

0.01 D, 0.01 mm

Axial Biometry

Low-Coherence Interferometry (LCI) on optical fiber (SLED @ 820 nm)

Capture System



LCD 10.1 inch capacitive touch screen




Dynamic, Photopic, Mesopic, Scotopic


Corneal map, Comparison map, Contact lens, Height map, Zernike analysis, Pupillometry, Rx/AL Trend analysis

Working Evironment

10 °C – 40 °C, Relative humidity 8 – 75% (no condensing), Atmospheric pressure 800 – 1060 hPa

Power Supply

AC 100 – 240 V 50/60 Hz

Power Consumption

100 VA

Dimensions / Weight

320 mm (W) x 490 mm (H) x 470 mm (L), 18 Kg

Printing Options

USB printer, Network printer, PDF on network shared folder, PDF on USB PDF or Image on network folder or on USB

Operating System

Windows 10 64-bit


4 GB

Hard Disk

500 GB

External Connections

LAN integrated, 2x USB


Radius of curvature – Measuring Range: 5.00 – 12.00 mm, Display Resolution: 0.01mm, In Vivo Repeatability: ±0.02 mm


Curve Radius in Diopter (D) (n=1.3375) – Measuring Range: 28.00 – 67.50 D, Display Resolution: 0.01 D, In Vivo Repeatability: ±0.12 D

Axial Lengh

Measuring Range: 15.00 – 36.00 mm, Display Resolution: 0.01mm, In Vivo Repeatability: ±0.03 mm

Pupil Dimension

Measuring Range: 0.50 – 10.00 mm, Display Resolution: 0.01mm

Limbus (White-to-White)

Measuring Range: 8.00 – 14.00 mm, Display Resolution: 0.01mm, In Vivo Repeatability: ±0.05 mm

MYAH Brochure

MYAH US Reports Guide

Product Solutions Guide

Myopia Management Practice Kit