Visionstar SK-2000

Settings for Three Implant Materials

PMMA, silicone and acrylic settings account for the different speeds at which ultrasound travels through each material, which matters whenever an eye already contains a lens.

Dual Propagation Velocities

Velocities of 1641 and 1532 metres per second are applied, letting differing ocular segments be measured according to how sound behaves in each rather than by a single average.

Standard Deviation Calculation

Across ten groups of data the console reports both average and standard deviation, so measurement consistency is visible to the operator rather than assumed.

Five Measured Parameters

Cornea, anterior chamber, lens, vitreous and axial length are all reported, feeding the calculations that require them and giving a full account of the eye measured.

Gain to 99 Decibels

High available gain helps recover a usable signal from eyes where opacity attenuates the return, which is where ultrasound retains its advantage.

Nine Eye Mode Settings

Normal, dense, aphakic, cataractous, PMMA, silicone and acrylic settings are joined by two customised modes, covering an unusually wide range of eye conditions.

Six Lens Power Formulas

SRK II, SRK/T, Binkhorst II, Hoffer Q, Holladay and Haigis are all provided, letting a surgeon apply whichever formula suits the eye in front of them.

200 Record Storage and Printer

Two hundred examination records are held on the console, with a fast thermal printer built in and a 6.5 inch colour touchscreen driving operation.

Measuring Pseudophakic Eyes

This is the situation the instrument is built around. An eye containing an implant behaves differently under ultrasound depending on whether that lens is PMMA, silicone or acrylic, and applying the wrong assumption puts error into the axial length. Dedicated settings for each material remove that source of error, which matters in refractive surprises, lens exchange planning and second eye calculations where the first eye is already implanted. Identifying the implant material beforehand is therefore part of the workup.

Routine Cataract Planning

For untreated eyes the console covers standard practice thoroughly. Six established formulas allow the surgeon to apply whichever suits the axial length, dual propagation velocities support segmental accuracy, and cornea, anterior chamber, lens and vitreous are reported alongside axial length. Immersion and contact methods are both available according to departmental preference. Selecting the correct eye mode before measuring supports reliable results.

Dense Cataract and Difficult Eyes

Gain reaching 99 decibels helps recover a signal where a dense lens attenuates the return, and a dedicated dense mode adapts the measurement accordingly. Standard deviation across repeated readings is particularly valuable here, since it shows whether a difficult measurement was genuinely consistent or whether the trace was being interpreted optimistically. Knowing a set of readings disagreed is itself useful information.

Corneal Assessment and Record Keeping

Corneal thickness measurement from 0.15 to 1.5 millimetres sits within the same console, and storage for 200 examination records supports comparison across visits without an external system. Interpretation of corneal readings in the context of pressure measurement remains a matter for the treating clinician. One console therefore serves both examinations from a single position.

Implant Material Handled Properly

Most biometers offer a single pseudophakic setting, which treats every implant as though it were the same material. Sound does not travel at the same speed through PMMA, silicone and acrylic, so that simplification introduces error precisely in eyes where accuracy is often being sought after an earlier disappointment. Separate settings for each material address the problem at its source rather than compensating for it afterwards. Second eye calculations benefit particularly, since the first eye is already implanted. Accuracy is usually being sought hardest in exactly these eyes.

Measurement Quality Made Visible

Reporting standard deviation alongside the average turns a set of readings into something the operator can judge. A tight spread indicates a measurement worth trusting; a wide one is a warning that the trace needs repeating. Without that figure, a poor set of readings and a good one look identical on the screen. Judging quality at the time avoids discovering a problem after surgery.

Depth of Configuration for Difficult Work

Nine eye modes, dual propagation velocities, 99 decibels of gain and both immersion and contact methods give an operator considerable latitude when an eye resists straightforward measurement. Two customised modes extend that further for departments with their own established requirements. Latitude of this kind matters most in the eyes that resist measurement. Few instruments in this class offer nine separate modes.

The SK-2000 addresses a source of error that many instruments simplify away: what an intraocular implant is actually made of. Ultrasound travels at different speeds through PMMA, silicone and acrylic, and dedicated settings for each remove an assumption that would otherwise sit unexamined inside every pseudophakic measurement.

The rest of the specification supports serious work. Biometry at 10MHz reaches accuracy of 0.05 millimetres or better across a depth of 40 millimetres or more, dual propagation velocities of 1641 and 1532 metres per second handle differing ocular segments, and cornea, anterior chamber, lens and vitreous are reported alongside axial length.

Immersion and contact methods are both available according to departmental preference. Standard deviation calculated across ten groups of data makes measurement consistency visible, gain to 99 decibels assists difficult eyes, six established formulas cover lens power calculation, and corneal thickness is measured from 0.15 to 1.5 millimetres. Two hundred records are stored on a console driven from a 6.5 inch touchscreen with a fast thermal printer built in.

Medigear.uk supplies the SK-2000 as a verified medical equipment supplier and will confirm the probe content, software, mains arrangement, condition and accessory content for your unit. Contact the team to discuss specification and arrange a quotation.