Refractometers TRIZ Cases

Mobile devices display periodic patterns to determine refractive error, eliminating specialized equipment requirements.

A bi-ocular apparatus presents visual stimuli to relax one eye while measuring the other.

Dynamic target sizing and Stokes cell compensation resolve accommodation relaxation failures in autorefractors.

An adaptive optics asymmetric double-pass technique captures high spatial frequency wavefronts and phase information lost by Shack-Hartmann sensors.

Purkinje mirror imaging detects eye position to correct Optical Coherence Tomography interference signals for accurate ocular parameter reconstruction.

A detachable optical display unit aligns an orientable straight line mark with a streak retinoscope to provide precise axis indication.

Switches to indirect axial length and corneal curvature calculations when fundus illumination fails in advanced cataracts.

Automated fundus image display in eye refractive power measurement reduces examiner effort by verifying reliability without manual switch operation.

A refractometer integrates a Scheimpflug camera to measure the distance between the device and the eye.

An automated VR headset vision correction module detects myopia via infrared reflection and adjusts lenses autonomously, eliminating manual gear adjustments.

An automated eye examination kiosk rotates devices to collect data, transmitting results remotely to eliminate patient waiting time.

An off-axis measurement optical system directs light to the fundus through a separate path from the optometry unit.

Multi-view ophthalmic diagnostic systems resolve single-view measurement inaccuracies by using angled beam paths to determine precise ocular tissue curvatures.

A combined optical measurement system quantifies tear film breakup using wavefront aberrometry and corneal topography data.

A synchronized optical device captures on-axis and off-axis eye images using separated lighting beams to determine relative peripheral refraction.

A refractive power measurement instrument switches between normal and high-speed modes to adapt to varying data reliability conditions.

Vision screening device captures near-infrared eye reflections to assess color vision capabilities without patient interaction.

Controller switches alignment paths for optometry units based on face detection to resolve mode-specific alignment accuracy.

Corrects spherical aberrations and cortical influences through comprehensive baseline measurements, improving visual acuity beyond standard refraction.

Instant chart presentation prevents brain correction, ensuring accurate ocular refractive power measurement.

Fits corneal height maps to a toric aspheric model, resolving poor repeatability in astigmatism angle measurement.

A multi-vergency target provides simultaneous objects for eye optical systems to enable accurate depth of field measurement.

A smartphone-attached optical scope uses stepper motors to rotate lenses for self-administered refraction measurements.

Neural networks evaluate test images from a mobile terminal to determine angle-dependent refractive power, replacing immobile optician equipment.

An ophthalmologic apparatus uses objective measurement to track eye characteristics and automatically adjust target presentation parameters.

An objective aberrometer measures total wave aberration to generate simulated retinal images for optical quality assessment.

A fixation light source projects multiple spots to create retinal images captured by a camera for visual axis determination.

An asymmetric dog bone aperture minimizes spherical defocus and higher order aberrations in tunable fluidic lenses.

A controller switches optotypes and adjusts illumination light to perform visual acuity measurements.

A control unit cyclically applies measurement and reference refractive values to an eye.

A plenoptic detector captures corneal and retinal light reflections to generate simultaneous topography and aberrometry data.

Automated phoropter module adjusts optical lenses based on patient visual acuity feedback to determine precise spherical and cylindrical corrections.

A slit-scanning ophthalmoscope detects light displacement shifts to characterize eye refraction across the field of view.

An image-based scanning method captures retinal fixation using a beam splitter and pulsed laser illumination.

A refraction measurement device uses a beam splitter to combine optical channels for precise alignment.

A smartphone attachment uses an inverse Shack-Hartmann lenslet array to capture high-resolution refractive error data.

An ophthalmic apparatus measures eye refractive power and anterior segment shape to calculate axial length without physical contact.

A holographic eye testing system projects three-dimensional objects in real space to enable interactive refractive state assessment.

An ophthalmological device calculates lens parameters from refraction and topography data to select suitable contact lenses.

An optical measurement system adjusts fixation target brightness based on pupil diameter to measure eye characteristics accurately.

Reflective optics redirect measuring beams along lowered or raised gazes, resolving mechanical alignment limits in optometric devices.

A phase modulation device uses a secondary light beam to calibrate wavefront analysis in ophthalmic instruments.

An optical element compensates specific eye aberrations to isolate remaining signals for objective refraction measurement.

A confocal and interferometric measurement apparatus combines subsystems to image longitudinal subregions within a static target location.

An off-axis iris imaging unit aligns its focal plane with the eye's iris to capture high-resolution images without beam splitters.

A computational method derives visual acuity values from eye wavefront aberration data using point spread function analysis.

A self-guided computerized vision measurement system analyzes acuity and sphere through audio prompts and camera assistance.

A rotating light deflecting member shifts measurement beam eccentricity across the pupil aperture to enable adaptive optical alignment.