Visionix VX 650

Optometry practices use the VX 650 to bring objective refraction and eye-health screening into a connected assessment. Sphere, cylinder, and axis results sit alongside wavefront analysis, so the examination contains information about optical quality as well as refractive power. Day and night presentations relate the findings to different pupil sizes, while corneal mapping adds the shape of the eye's front surface.

In corneal and ocular-surface clinics, the instrument provides curvature maps, optical thickness measurements, tear-film timing and external-eye images. The keratoconus probability index supports assessment of an irregular corneal pattern. Tear meniscus height and Efron grading add observations about the ocular surface, allowing the clinician to document several aspects of a dry-eye presentation within the same record.

Glaucoma assessment benefits from having pressure, corneal thickness, anterior chamber angles, and optic disc photography available together. The clinician can distinguish measured pressure from its calculated thickness-adjusted value while reviewing the structural images. Each component contributes a specific observation, and the summary interface keeps those observations accessible during the assessment.

Cataract and refractive assessment teams can review retroillumination images alongside refraction, aberration results,s and corneal data. The toric intraocular lens position display relates the visible implant orientation to anterior corneal topography. Retinal photographs provide a further record of the posterior eye during the same assessment.

For retinal screening, the non-mydriatic camera supports documentation of visible changes associated with diabetic retinopathy and age-related macular degeneration. Trained acquisition staff operate the examination sequence, with ophthalmologists and optometrists interpreting the findings. Visionix Nexus compatibility supports review of the resulting data by connected eye-care teams, preserving the distinction between measurement acquisition and clinical assessment.

Pressure findings with structural context

The glaucoma summary brings pressure, thickness, chamber-angle information, and fundus photography into one review. That organisation makes the relationship between a numerical pressure reading and the eye's measured structures accessible during assessment. The clinician can examine the optic disc photograph and the anterior measurements within the same record. Measured and calculated pressure values retain separate identities, supporting a clear interpretation of what the instrument has obtained.

Corneal shape linked to optical performance

Wavefront measurements and Placido topography describe different aspects of the same optical system. Refraction gives sphere, cylinder, and axis, while surface mapping shows how corneal curvature varies across the measured area. Aberration displays add information about the path of light through the eye. Together, these views support an assessment that relates the corneal pattern to the measured optical result, with each modality available for detailed inspection.

Ocular-surface findings gathered together.r

Tear-film break-up time, meniscus height and external-eye photographs each capture a different part of an ocular-surface assessment. Their presence within the VX 650 gives the examination a timed observation, a visible tear-reservoir measurement,nt and a photographic record. The Efron reference adds a structured visual grading tool. This combination supports documentation of the patient's presentation in a form that can be revisited during follow-up.

Retinal photographs within the examination record

The built-in fundus camera adds a posterior-eye image to the instrument's anterior and optical findings. Its 45° view records the visible retinal field for examination of the optic disc, vessels, and surrounding tissue. A photograph gives the clinician a visual record to inspect alongside the numerical measurements. The image also supports explanation of the findings during a consultation, using the patient's own examination material.

Automatic acquisition with visible progress

Automatic alignment and movement between the eyes organise the instrument's selected measurements around the positioned patient. The interface displays the active test sequence and its progress, keeping the acquisition stage visible to the operator. Trained staff can follow the sequence, inspect the resulting images, and access individual tests. This arrangement supports delegated acquisition while maintaining a distinct review stage for the professional interpreting the findings.

Detailed review behind the summary

The summary screen links to individual measurements and images. A clinician can move from an overall pattern to the relevant corneal, optical, pressure,e or retinal view. The ring image, sectional view, EW, and fundus photograph each show the acquired material behind their respective assessment. The clinician can inspect that material while considering how the numerical results relate to the observed anatomy.

A configurable position for the operator

The rotating touchscreen allows the control display to face the operator within the examination layout. Patient alignment remains organised around the chin and forehead supports, while the display provides access to test selection and review. The 660 mm instrument width and 420 mm depth define its tabletop footprint. This physical arrangement supports a dedicated measurement position with the controls accessible alongside the seated patient.

Connected review of the captured findings

Compatibility with Visionix Nexus gives the VX 650 a defined connection to a platform for examination-data exchange. Its measurements and images can become part of a connected review arrangement, allowing acquisition and professional interpretation to take place at their respective locations. The instrument remains the source of the captured eye data. The compatible platform handles the exchange within the configured examination workflow.

Optical upkeep tied to image quality

The retinal camera has a specific cleaning approach based on a non-alcoholic, paper-free cloth. This makes optical-surface care a defined part of routine operation. Image review follows acquisition, and a selected measurement can be repeated within the active examination. Maintaining the camera surface and inspecting the photograph work together to support a usable retinal record for the clinician's subsequent assessment.

Shack-Hartmann wavefront sensing

Shack-Hartmann sensing samples the optical wavefront to describe how light has travelled through the eye. The VX 650 uses this measurement for objective refraction and aberration analysis, with 1,400 measuring points specified for a 7 mm pupil at 0 D. Across three zones, the measurement area spans 2–7 mm. Wavefront capture takes 0.2 seconds; this value identifies the optical acquisition stage within the selected examination sequence.

Objective refraction across pupil conditions

Sphere measurements extend from -20 to +20 D, with cylinder from 0 to ±8 D and axis from 0° to 180°. The day and night presentations associate refractive results with different pupil diameters. This gives the clinician access to the aperture context of the result. Sphere, cylinder and axis remain identifiable values within the wider examination, alongside the corneal and optical-quality displays.

Lower-order and higher-order aberration analysis

Aberration maps describe optical departures from an ideal wavefront. Lower-order components relate to familiar refractive errors, while higher-order components describe additional optical patterns measured through the pupil. The VX 650 presents both groups for review. These maps allow the clinician to inspect how the optical measurement is distributed, adding a spatial view to the sphere, cylinder, and axis values used in refraction.

Point spread and contrast-transfer displays

The point spread function illustrates the calculated optical image of a point, while the modulation transfer function describes transfer of contrast at different levels of detail. Both displays arise from the instrument's optical analysis. The visual-acuity chart presentation accompanies these tools as an illustration of optical quality. Together, they provide ways to inspect the measured wavefront's optical implications within the examination interface.

Twenty-four-ring Placido topography

The Placido system assesses anterior corneal shape from reflected rings. It has 24 rings and 6,144 measuring points, with more than 100,000 points included in the analysis. At 43 D, the covered corneal diameter extends from 0.75 mm to more than 10 mm. The stated power range is 37.5–56 D, with repeatability of 0.03 mm. The reflected ring pattern is available for inspection before the topography results are saved.

Corneal maps and keratoconus probability index

Axial, tangential,l and elevation presentations describe the anterior corneal surface in different ways. The corneal data summary gathers relevant values, and the keratoconus probability index supplies an additional software-derived indicator for professional interpretation. Posterior corneal assessment is also supported by the VX 650's imaging capabilities. The displayed corneal pattern can therefore be examined alongside optical thickness and the instrument's other anterior-segment observations.

Scheimpflug optical sections

The Scheimpflug camera records a static horizontal optical section through the anterior eye. That section supports pachymetry and iridocorneal-angle assessment, while anterior chamber imaging gives the clinician a structural view of the measured region. The specified illumination is blue light at 455 nm. The optical section complements the surface maps by presenting a sectional view of the anterior structures within the same examination.

Optical pachymetry

Pachymetry measures corneal thickness, expressed here in micrometres. The VX 650 covers 150–1,300 micrometres, with manufacturer-stated accuracy better than 5 micrometres. Thickness information appears within the anterior assessment and contributes to the calculated pressure-adjustment display. The corneal thickness value remains a separate measurement, so its role in the examination can be considered alongside the shape maps and the pressure result.

Anterior chamber and angle assessment

Iridocorneal-angle measurement describes the angle between the iris and cornea in the imaged section. The specified range is 0°–60°, with angular resolution of 0.1°. Nasal and temporal angle information contributes to the glaucoma summary. The sectional image gives context to the numerical result, allowing the clinician to inspect the measured anatomy together with pressure and the optic disc photograph.

Non-contact air-puff tonometry

The integrated tonometer uses an air puff to measure intraocular pressure. Its calibrated measurement range is 7–44 mmHg, and the summary presents the pressure result alongside corneal thickness. A calculated thickness-adjusted pressure value is also available. The interface preserves the measured and calculated values as distinct findings, while the related structural images remain accessible for the clinician's assessment of the eye.

Retroillumination and toric implant review

Retroillumination uses light returning through the eye to make opacities visible in the cornea or crystalline lens. The resulting image can be reviewed with the optical measurements during cataract assessment. A toric intraocular lens position display also relates visible implant orientation to anterior corneal topography. This connects the image of the implanted lens with the corneal pattern within the instrument's assessment tools.

Tear-film break-up and meniscus measurement

Non-invasive tear break-up time records the stability of the tear film after a blink. Meniscus-height measurement adds information about the visible tear reservoir along the lower eyelid. The VX 650 includes both within its dry-eye assessment tools. Their separate outputs allow tear-film stability and meniscus appearance to be documented together, alongside external-eye photographs and the other findings from the ocular-surface examination.

External-eye photography and Efron grading

The anterior-eye camera records the external appearance of the eye, including scleral photographs for ocular-surface review. Efron grading supplies a visual reference for assessment of the photographed presentation. These tools place observable surface appearance alongside the timed tear-film result and meniscus measurement. The photographs provide material that the clinician can inspect, discuss, ss and revisit within the patient's eye-health assessment.

Non-mydriatic fundus photography

The retinal camera captures a 45° field at 6 megapixels and has a stated optical resolution greater than 60 lines/mm. Its non-mydriatic design supports acquisition through an undilated pupil. The captured retinal field provides a record of the optic disc, vessels, and visible retinal tissue. Within the VX 650, this posterior image sits alongside the anterior, refractive and pressure findings for connected assessment.

Automatic alignment and adjustable head support

XYZ alignment positions the measurement system in three directions, while eye tracking and automatic movement between eyes support the selected sequence. The patient uses the adjustable chin rest and forehead support during acquisition. Positioning controls and alignment markers are available to the operator. Once the patient is positioned, the display shows the sequence and progress of the selected tests for both eyes.

Rotating touchscreen and examination controls

The 15.6-inch TFT display has a resolution of 1,366 × 768 pixels and a multi-touch interface. Its rotating arrangement supports access from the operator's chosen position. Test schemes, progress indicators and summary results are available through the interface. Controls allow tests to be selected, an active measurement to be skipped, acquisition to be stopped,d and individual results to be inspected during the examination.

Output connections and compatible software

RS232, USB, VGA, LAN, HDMI and DisplayPort connections provide the instrument's stated physical interfaces. A built-in printer supports local output, and the examination interface includes export controls. Visionix identifies Nexus, Eye Refract and EyeWisdom MCS as compatible connected products for their respective data-exchange, examination and retinal-analysis roles. Retinal photographs and measurement results remain the outputs supplied by the instrument to these connected arrangements.

The VX 650 suits eye-care teams whose assessment brings optical performance, corneal structure, eye pressure, and retinal appearance into the same clinical discussion. Its value lies in the relationship between those findings: the measured pressure can be viewed with thickness and angle information, while a retinal photograph adds the posterior-eye record. Automatic acquisition supports trained operators, and the summary interface gives the interpreting clinician access to the detail behind each result. Routine optical cleaning remains part of maintaining the photographic output. Connected review is supported through manufacturer-identified software compatibility. For practices building examinations around related measurements and images, the instrument provides a defined anterior-to-posterior assessment platform with an integrated 45° fundus camera.