Refractometers TRIZ Cases
- Refractive Error Determination Using Screen Spatial Frequency
Mobile devices display periodic patterns to determine refractive error, eliminating specialized equipment requirements.
- Eye Relaxation Apparatus for Refractive Aberration Measurement
A bi-ocular apparatus presents visual stimuli to relax one eye while measuring the other.
- Fixation Target System with Stokes Cell for Astigmatism Compensation
Dynamic target sizing and Stokes cell compensation resolve accommodation relaxation failures in autorefractors.
- Adaptive Optics Asymmetric Double-Pass Ocular PSF Measurement
An adaptive optics asymmetric double-pass technique captures high spatial frequency wavefronts and phase information lost by Shack-Hartmann sensors.
- Ocular Parameter Reconstruction via Purkinje-OCT Motion Compensation
Purkinje mirror imaging detects eye position to correct Optical Coherence Tomography interference signals for accurate ocular parameter reconstruction.
- Retinoscopic Aid Device for Automated Phoropter Axis Alignment
A detachable optical display unit aligns an orientable straight line mark with a streak retinoscope to provide precise axis indication.
- Ophthalmologic Apparatus Cataract Refractive Power Measurement
Switches to indirect axial length and corneal curvature calculations when fundus illumination fails in advanced cataracts.
- Eye Refractive Power Measurement Automatic Image Display
Automated fundus image display in eye refractive power measurement reduces examiner effort by verifying reliability without manual switch operation.
- Refractometer Distance Measurement Using Scheimpflug Camera
A refractometer integrates a Scheimpflug camera to measure the distance between the device and the eye.
- VR Headset Vision Correction Module with Infrared Myopia Detection
An automated VR headset vision correction module detects myopia via infrared reflection and adjusts lenses autonomously, eliminating manual gear adjustments.