Phoropters TRIZ Cases

Objective starting measurements and adaptive increments help round ophthalmic lens features to standard values with fewer subjective trials.

A handheld touchscreen presents modulated shapes, records responses, and transmits quantitative vision results to healthcare providers.

This case uses focused light beams and user feedback to measure dioptric power, astigmatism, and axis affordably.

Automated optotype presentation at varied orientations calculates spherical and cylindrical values without skilled personnel.

Dynamic control turns off the pilot lamp while the display is active, eliminating light distraction and improving binocular vision test accuracy.

A computerized display presents characters at varying acuity levels to calculate visual acuity loss without dark adaptation.

A vision test unit tracks eye movements to automate eyesight diagnosis without patient collaboration.

A vision contrast test system uses illumination and color sensors to continuously adjust display brightness for consistent visual acuity testing.

Dynamic shutter control alternates images between eyes at different frequencies and duty cycles, resolving near vision refraction measurement inaccuracies.

A mobile computer detects test subject distance and scales digital optotype images to match individual target variables.

Liquid crystal shutters modulate light to present distinct images, resolving the contradiction between measurement precision and device complexity.

A method determines dioptric parameters by collecting evaluation and certainty data from a person viewing a visual target.

A virtual reality platform assesses visual performance by simulating daily living activities.

A single lens with orthogonal varying mean and cylindrical powers enables subjective refraction without bulky phoropters.

A refraction test unit aligns subject pupils with optical axes to measure spherical and cylindrical values in near vision conditions.

Segmented geometric optotypes resolve astigmatism confusion by positioning reference images outside the target shape for intuitive user selection.

A binocular display device modifies virtual image distance to help users determine their own dioptric parameters.

Automated verification tests detect potential errors in provisional refraction values, allowing the system to adapt test sequences and reduce professional fatigue.

Combining single dioptric parameters into a global value improves reliability of subject sensitivity assessment.

A refractive optical system varies spherical and cylindrical power to generate precise optotype images.

Calculating virtual rays through a virtual lens maintains the accommodation-convergence link, resolving simulation accuracy issues in virtual reality.

Motorized phoropter guides users through independent refraction using automated lens control, eliminating the need for skilled professionals.

A subjective optometric apparatus uses a light guide member to conduct illumination from a peripheral source to the target presenting unit.

Rotatable polarization plates convert circular light to linear light, eliminating separate optical elements and reducing apparatus size.

A phoropter features an orientable support that rotates around a horizontal axis to align the optical axis with natural viewing positions.

A Bayesian adaptive system selects informative stimuli to estimate contrast sensitivity functions with high precision.

Simulated eye model captures images through intraocular lenses at varying focus positions, reducing the need for invasive clinical trials.

A visual acuity test apparatus uses computer-controlled input to randomly select and display diverse test symbols for accurate examination.

A computational system evaluates optical and postural performance using virtual wearer models to determine optimized visual equipment.

Surrounding solid state LEDs provide uniform illumination that eliminates manual pen light variability and ensures reproducible visual acuity measurements.

A digital testing system combines multiple visual parameters to generate a precise vision performance score.

A portable vision testing apparatus uses a variable lens element on an outer rail to adjust diopter power for visual acuity assessment.

Diffraction patterns from point sources resolve measurement imprecision caused by pupil dilation in darkened rooms.

Integrating spherical power into cylindrical lenses neutralizes the spherical equivalent, eliminating offset errors during astigmatism correction.

An interactive fit tool simulates visual quality to optimize contact lens selection.

A structured optical beam with position-dependent polarization enables direct human observation of Haidinger's brushes.

A handheld autorefractive device employs a micro lens array to split light patterns for precise refractive parameter detection.

A single wavefront sensor measures optical aberrations in both eyes simultaneously using segmented detector zones.

Variable refractive correction optics adjust lens power to provide sharp visual stimuli, eliminating manual trial lens selection and rim artifacts.

Dual optical channels with Badal systems produce superimposed retinal images of identical size, eliminating magnification artifacts during patient adaptation.

Opposing prisms replace dual LCDs and polarization filters, reducing apparatus size while maintaining precise binocular balance measurement accuracy.

A computer-controlled dual-image display system generates adaptive 3D backgrounds and variable optotypes for binocular vision testing.

Birefringent light rotators in a single lens assembly switch refractive indices to provide adjustable near and far vision without distortion artifacts.

Shield members block external disturbance light reflection to maintain examination accuracy without beam splitter.

A display system uses natural images to determine eye refraction properties.

A vision-compensating device determines spherical and cylindrical optical corrections using a control module that accounts for the distance separating its lens and optical assembly.

Non-periodic integral objects match test field luminance to resolve ecological validity limits in everyday light assessment.

An integrated wearable apparatus combines a tunable lens and stimulus generator to perform comprehensive vision testing, eliminating bulky separate devices.

A subjective refraction apparatus uses a defocus corrector and astigmatism corrector to adjust optical elements.

A video game maps macular Vernier acuity using a tablet camera and touch interface.