Tonometers TRIZ Cases

A mobile imaging module adds 3D angle adjustment to Fabry-Perot eye pressure sensing, improving portability and interference capture.

A fiber optic sensor placed at a fine needle tip measures intraocular pressure directly, reducing corneal-shape error with low invasiveness.

Heated pulse conditioning keeps the eye-test gas pulse cylindrical, improving repeatable targeting for dry eye neurosensory testing.

Illuminated aperture cues and position sensing help patients self-align an ophthalmic instrument for accurate intraocular pressure measurement.

A fluid-based accommodating intraocular lens changes optical power under capsular forces to restore near and intermediate vision after cataract surgery.

A bi-curved corneal contact tip minimizes corneal deformation, improving intraocular pressure accuracy without thickness correction.

Dual-radius prism geometry enables two corneal applanation readings to correct Goldmann IOP error and estimate corneal elasticity.

Multi-wavelength beamlets and interferometric sensing separate IOP-driven thickness changes from corneal abnormalities in vivo.

A tilt sensor and correction factor compensate for gravity, making slightly angled rebound tonometer readings usable.

Repeated magnetic impulses and induced-voltage comparison identify unsuitable probes before tonometry, improving accuracy and eye safety.

A drive coil positions the magnetic probe while induced voltage detects contact, enabling reliable rebound tonometer measurement.

This case places a fiber optic pressure receiver at the needle tip for accurate vitreous-body measurement in difficult eyes.

Light channels direct beams parallel to the visual axis, enabling patients to verify correct instrument positioning through visible cues.

Dynamic intensity adjustment stabilizes sound pressure, reducing noise interference and improving eye pressure measurement accuracy.

A miniature lens focuses an optical beam onto a sensor membrane, reducing alignment sensitivity and enabling precise intraocular pressure measurements.

A wireless intraocular pressure sensor system transmits real-time data via inductive coupling.

Bi-curved tonometer tips reduce intraocular pressure measurement errors caused by corneal curvature mismatch and fluid film adhesion.

A contact lens uses overlapping patterns to form a moiré interference pattern for detecting cornea curvature changes.

A lateral illumination device projects a light slit onto the cornea at an angle, avoiding nozzle obstruction during intraocular pressure measurement.

A diffractive fundus lens integrates a DOE and aspheric optics to project patterns onto the retina.

A handheld applanation tonometer applies constant force to the eye and captures images to calculate intraocular pressure.

A contactless ophthalmotonometer switches actuator current values based on piston rotation angle to generate compressed air.

Segmenting the tonometer probe into a reusable holder and disposable tip lowers cost while maintaining hygiene standards.

A contact lens with an embedded nanowire network detects intraocular pressure via resonant frequency shifts in an external coil.

Real-time tracking guides eye alignment into the eyebox, reducing optical artifacts from high illumination brightness.

Controller determines subject placement using brightness differences between illuminated and dark images, eliminating special-purpose detection circuits.

Replacing bulky perimeter equipment, this system uses eye tracking on tablets for portable glaucoma diagnosis.

Air-puff module deforms the cornea while optical interference units measure intraocular pressure and tissue properties in a single inspection.

A handheld non-contact tonometer uses an internal air generator and electronic sensors to measure intraocular pressure without physical corneal contact.

Curved external lateral surface guides light through transparent material to corneal applanation area without reflection.

Optical sensor replaces complex electronics with light interference patterns, enabling frequent home monitoring without biocompatibility risks.

A conical prism tonometer uses a piezo element and laser light to measure intraocular pressure.

A wearable contact lens uses arcuate resistive traces to detect intraocular pressure changes via electrical signal monitoring.

Controller detects measurer distance from forehead support to stop movement and emit warnings during operation.

Segmenting the probe contact phase isolates elastic forces, improving intraocular pressure accuracy while revealing corneal hysteresis.

A processor fuses high-precision and wide-area coordinates to align an intraocular pressure detection unit with the eyeball vertex.