Ophthalmic Metrology

When developing optical test instruments for ophthalmology TRIOPTICS has relied on a broad experience in optical testing, optimization for mass production and in-house software development. All instruments are optimized for ophthalmic lenses and provide accurate and repeatable measuring results.

OptiSpheric® IOL
Characterization of Intraocular Lenses

productionThe OptiSpheric® IOL allows the measurement of all important parameters of intraocular lenses according to the EN/ISO 11979. For any type of lenses (monofocal, multifocal, toric) with any type of structure (refractive, diffractive) or materials (PMMA, foldable, hydrophilic). It measures in air or in situ the following parameters:

  • Effective focal length (EFL)
  • Power, add power, cylinder
  • Modulation Transfer Function (MTF)
  • Point Spread Function (PSF)
  • Cylinder axis
  • Radius of curvature
  • Back focal length (BFL)
  • Through focus scans
  • Relative transmission

 

WaveMaster® IOL
iolWavefront Measurement of Intraocular Lenses

  • Real time wavefront measurement of intraocular lenses in air and in situ in compliance with ISO 11979
  • Measurement and analysis results: Dioptric power, aberrations, Zernike coefficients, power mapping, 2D Modulation Transfer Function (MTF), Effective Focal Length (EFL), Point Spread Function (PSF)
  • High accuracy (λ/20) and dynamic range (1500 λ) for wavefront measurement
  • Lens diameter 0.5 to 15 mm
  • Power range -100 to 100 D in model eye with model cornea, absolute accuracy 0.1 to 0.3%
  • Real time measurement (10 Hz) for wavefront, MTF and aberrations
  • Short measurement time of 5 sec for
    dioptric power

 

2µPhase®
Measuring contact and intraocular lenses

  • Interferometer for the surface profiling of contact and intraocular lenses, molding tools for ophthalmic lenses
  • High resolution camera (1000×1000 pixels)
  • Radius measurement
  • Small footprint

 

 

 

 

ImageMaster® VISION
imagemaster_visionImaging quality evaluation of ophthalmic glasses

  • Imaging Quality Analysis in terms of Modulation Transfer Function (MTF) of eye glasses
  • Further parameters: Dioptric power, through focus MTF, line spread function, phase transfer function, astigmatism
  • Analysis of the measurement results: MTF vs. Spatial Frequency, MTF vs. Object Angle, MTF vs. Defocus
  • Flexible design enables different measurement settings
  • ±40° adjustable arms for on-axis and off-axis MTF measurement
  • Object distances between 30 cm and infinity conjugate
  • Simulation of the accommodation and the adaption of the human eye
  • User friendly software offering a variety of measurement and analyzing tools