Visionstar OSE-4000

Dye Free Vascular Imaging

Angiography here is described as non invasive, studying flow within the vascular structure of the eye without dye injections. The clinical picture of perfusion is built from the scan itself.

Scan Speed of 80,000 A-Scans per Second

The stated scan speed is 80,000 A-scans per second. High speed acquisition is what makes dense angiography volumes and repeated structural patterns practical within a single sitting.

Spectral Domain Imaging from an SLD Source

Methodology is listed as spectral domain with a super luminescent diode source at 840 nm. Axial resolution is stated at 5 microns optical and A-scan depth at 3mm.

Real Time Retinal Tracking

Tracking based on laser ophthalmoscopy follows the retina during acquisition, which the manufacturer relates to reducing artefacts caused by eye movement during the examination.

Averaging Across Many Images

Ultra fine retinal imaging is described using an averaging technique of up to 50 images, so the displayed result is built from a large stack rather than one pass.

Two Angiography Configurations

The advance configuration lists four scanning volumes, eight segmentation options and quantitative analysis. The essential configuration lists two scanning volumes. Both run the C-OMAG algorithm.

Wide Field Live Fundus Imaging

Line scanning laser ophthalmoscopy provides a live fundus view across a 45 degree field, with a minimum pupil diameter of 3.0mm listed for the imaging.

Full Structural Pattern Set

Macular, disc and anterior patterns are all listed, alongside two glaucoma cubes sampling evenly across 200 by 200 A-scans over the macular area and the disc area.

Retinal Vascular Assessment

The angiography module is described as allowing detailed study of flow within the vascular structure of the eye with no dye injection required. For a practice, the significance is that a vascular question can be asked during an ordinary appointment. Scanning volumes run from 3mm by 3mm at 256 by 256 A-scans through to 12mm by 8 mm at 540 by 360, so a clinician can work tightly around the fovea or take in a wider span, and the C-OMAG algorithm handles the processing in both configurations.

Glaucoma Detection and Monitoring

Two cube patterns cover the macular area and the disc area with evenly distributed sampling across 200 by 200 A-scans, which the manufacturer relates to early detection and management. Because acquisition runs at 80,000 A-scans per second with tracking active, repeat imaging at review appointments is quick to obtain and less vulnerable to the small movements that spoil a scan in an anxious or elderly patient.

Macular Structure and Layer Segmentation

Structural patterns for the macula include an HD line scan at 6 or 12 mm, a 3D scan at 6 mm by 6 mm, a 6-line radial scan and a multi pattern on a 5 by 5 grid. Segmentation in the advance configuration reaches the vitreoretinal interface, superficial and deep retina, the avascular layer, choriocapillaris and choroid, so a finding can be examined at the depth where it sits.

Anterior Segment Imaging

The anterior segment lists an HD line scan at 6 or 16 mm together with a 6-line radial scan. That gives a practice a corneal and anterior view on the same instrument used for retinal and vascular work, which matters in a clinic where one room has to serve a mixed appointment list across a working day.

Angiography Without a Needle

Studying the ocular vasculature without a dye injection removes the preparation, the consent conversation and the monitoring that an injected study demands. Patients who would decline an invasive procedure, or who cannot safely receive one, can still be assessed. For the practice it means a vascular question does not automatically become a referral, and for the patient it means the answer often arrives in the same appointment as the question.

Speed and Tracking Working Together

A stated 80,000 A-scans per second matters most when paired with tracking that follows the retina in real time. Speed alone shortens the sitting; tracking keeps the data usable when a patient blinks or drifts. Averaging across up to 50 images then builds the final picture. The combination is aimed squarely at the patients hardest to image well, which in most clinics are precisely the patients who most need imaging.

A Footprint You Can Plan Around

The instrument is listed at 532 mm long, 360 mm wide and 540 mm high, weighing 30.5 kg. Those are stated figures rather than estimates, so a practice can measure a bench and check a room before committing rather than discovering the problem on the day. For clinics fitting advanced imaging into an existing consulting space, knowing the numbers in advance is worth more than it sounds.

The Visionstar OSE-4000 sits at the capable end of ocular imaging. Alongside the structural work that any eye clinic expects, it carries an angiography module that studies flow within the vascular structure of the eye without dye injections, running on the C-OMAG algorithm across scanning volumes from 3mm by 3mm up to 12mm by 8 mm. Around that sit a stated scan speed of 80,000 A-scans per second, a super luminescent diode source at 840 nm, axial resolution of 5 microns optical, real time retinal tracking, averaging across up to 50 images and a wide 45 degree live laser fundus view.

This page states what the technical data states and no more. Electrical supply, software version, configuration and condition are matters for Medigear.uk to confirm, and nothing here should be read as a claim about testing or regulatory approval. Which angiography configuration a given instrument carries is a specific point to check, since the segmentation options and quantitative analysis differ between them.

If your practice is weighing up dye free vascular imaging and wants the specification checked against the patients you actually see, speak to Medigear.uk. As a verified medical equipment supplier working across medical, dental, rehabilitation and aquatic therapy settings, the team will confirm what this instrument carries and help you judge whether it belongs in your clinic.