Visionstar OD1-AP

Gain Adjustable Across 0 to 120 Decibels

Adjustable gain across the full range lets the operator lift a weak returning signal, which is frequently what makes measurement possible in a dense cataract.

Stated Compact Dimensions

The housing measures 200 by 168 by 165 millimetres, so a clinic can establish whether it fits an intended position before committing rather than discovering the answer on delivery. The printer and touchscreen sit within that same footprint.

Resolution to 0.01 Millimetres

The 10MHz biometry probe resolves to 0.01 millimetres with accuracy of plus or minus 0.02 millimetres, measuring across 15 to 35 millimetres at 1640 metres per second.

Four Measured Parameters

Anterior chamber depth, lens thickness, vitreous length and axial length are all reported, feeding the lens power calculations that require them.

Four Eye Modes

Normal, aphakic, pseudophakic and dense cataract settings adapt measurement to the state of the eye, since lens condition changes how ultrasound travels through it.

Six Lens Power Formulas

SRK-II, SRK-T, Binkhorst, Holladay, Hoffer-Q and Haigis are all provided, letting a surgeon apply whichever formula suits the eye being measured. Formula performance varies considerably across differing axial lengths.

Micrometre Corneal Resolution

The 20MHz corneal probe measures across 0.23 to 1.3 millimetres, resolving to 1 micrometre with accuracy of plus or minus 5 micrometres.

Touchscreen and Internal Printer

A 5.7 inch colour touchscreen handles patient entry and operation, while an internal thermal printer produces reports at the instrument itself.

Dense Cataract Assessment

This is where adjustable gain earns its keep. A dense lens opacity attenuates the ultrasound signal returning from the retina, and a fixed gain instrument may simply fail to produce a usable trace. Being able to lift gain across the full 0 to 120 decibel range, combined with a dedicated dense cataract eye mode, gives the operator the means to obtain a reading in exactly the eyes where optical biometry is least likely to succeed.

Routine Cataract Planning

For ordinary eyes the instrument covers standard practice thoroughly. Six established formulas allow the surgeon to apply whichever suits the axial length in question, four eye modes cover the common lens states, and anterior chamber depth, lens thickness and vitreous length are reported alongside axial length. Immersion and contact methods are both available according to departmental preference. Selecting the appropriate mode before measuring supports reliable readings.

Clinics Moving Between Rooms

A housing of 200 by 168 by 165 millimetres with an internal printer and touchscreen forms a complete measuring station that occupies very little bench. Services running clinics across several rooms, or on different days in different spaces, can relocate the instrument rather than duplicating it, and the stated dimensions make that planning straightforward.

Corneal Assessment Alongside Biometry

Corneal thickness measurement from 0.23 to 1.3 millimetres at 1 micrometre resolution sits within the same instrument, so a clinic running both examinations does not need two positions or two devices. Interpretation of corneal readings in the context of pressure measurement remains a matter for the treating clinician. One position on the bench therefore serves both examinations.

Readings in Eyes That Resist Measurement

The clinical value of adjustable gain is easy to overlook until a dense cataract produces no usable trace. Optical biometry struggles precisely where opacity is greatest, which is why ultrasound retains its place, and an instrument that lets the operator drive gain across the full range extends how far that fallback reaches. A reading obtained is worth considerably more than a specification never used. Departments handling advanced cataract lists encounter this regularly.

Dimensions You Can Plan Around

Stating 200 by 168 by 165 millimetres allows a clinic to measure the intended position and know the answer beforehand. Complete function in that footprint, including printer and touchscreen, means the whole measuring station moves as one item, which suits services whose room allocation changes week to week. Few instruments in this class state their dimensions at all. Planning a room around a known footprint avoids awkward surprises later on.

A Complete Workup Without Attachments

Biometry, pachymetry, calculation, patient entry and printed reporting all happen at the instrument, with no computer required alongside. Power consumption below 45 volt amperes keeps demands modest. For a clinic wanting one device that finishes the job, that self-sufficiency is the practical benefit. Fewer connected devices also means fewer things to go wrong before a list. Everything needed for a workup arrives in one housing.

The OD1-AP concentrates on two things: obtaining a reading where measurement is difficult, and doing so from a footprint a clinic can actually accommodate. Gain adjustable across 0 to 120 decibels lets the operator lift a weak signal from behind a dense cataract, supported by a dedicated dense cataract eye mode alongside normal, aphakic and pseudophakic settings.

Measurement is thorough for ordinary work too. A 10MHz probe resolves to 0.01 millimetres with accuracy of plus or minus 0.02 millimetres across 15 to 35 millimetres, reporting anterior chamber depth, lens thickness and vitreous length alongside axial length, while a 20MHz probe measures corneal thickness from 0.23 to 1.3 millimetres to a single micrometre.

Six formulas covering SRK-II, SRK-T, Binkhorst, Holladay, Hoffer-Q and Haigis handle lens power calculation, immersion and contact methods are both available, and a 5.7 inch touchscreen with internal thermal printer completes a self-contained station in a 200 by 168 by 165 millimetre housing.

Patient entry, measurement, calculation and printing all happen at the instrument itself. Three configurations are offered. Medigear.uk supplies the OD1-AP as a verified medical equipment supplier and will confirm which applies, along with the full specification, probe content, software, mains arrangement, condition and accessory content. Contact the team to discuss specification and arrange a quotation.