Visionstar JS-700AT

Three Cylinder Presentations

The cylinder is presentable as minus, mixed or plus, so a reading appears in whichever convention a practice already uses when it writes a prescription down.

Pupil Height on Screen

The pupil height value is displayed on the screen, which is a fitting measurement instruments at this level do not always provide to the operator directly.

Wide Sphere Range

Sphere runs minus 25.00 to plus 25.00D, with cylinder and addition each from 0.00 to plus or minus 10.00D, and axis across 0 to 180 degrees in 1 degree steps.

Two Addition Values

The addition row gives two addition values rather than one, which suits bifocal designs where a single figure does not fully describe the finished lens.

Small Contact Lens Diameter

Contact lens diameter descends to 5mm, with base curve from 6.00 to 9.00 and the same sphere range as the spectacle lenses measured upon the instrument.

Fine Resolution Throughout

Sphere, cylinder, addition and prism are each selectable at 0.01, 0.12 or 0.25 steps, so an operator works as finely as a particular task happens to demand.

Coloured Lens Measurement

Coloured lenses with 10 per cent transmittance are stated as measurable, which covers the tints and sunglasses a practice dispenses alongside its clear lenses.

Display and Interface

The display is a 5.7 inch TFT colour LCD and the data interface is RS-232, with spectacle lens diameter accepted from 20 to 100mm across the stated range.

Practices With a House Convention

Selectable cylinder form is the quiet argument for choosing this instrument. Where a practice writes everything in minus cylinder, or everything in plus, an instrument that presents the other way means every reading is transposed by by hand before it is finally recorded. Transposition is where a sign or an axis changes without anybody noticing, so removing that step removes a whole class of error at once, and permanently.

Progressive Lens Dispensing

Pupil height shown on screen matters here, because a progressive corridor must sit in front of the pupil and the height is what places it. Taking that figure from the same instrument that reads the power means a dispensing record comes from one single source, and the manufacturer describes accurate and quick progressive measurement alongside it as well here.

Contact Lens Practices

Contact lens diameter down to 5mm with base curve from 6.00 to 9.00 covers trial lenses and small rigid lenses that a wider minimum would refuse. For a practice checking what a patient has arrived wearing, or identifying an unlabelled lens, having both the power and the curvature at a single bench removes a separate piece of equipment from the consulting room entirely.

Practices Recording Electronically

An RS-232 interface carries a reading onward to a practice system. Every manual transfer of a figure is another opportunity for a digit to change, and in dispensing a changed digit becomes a lens that is subtly wrong and still passes an inspection, so removing the retyping removes that failure rather than merely guarding against it after the event.

The Reading Matches the Record

Presenting the cylinder in minus, mixed or plus means the figure on the screen is the figure that goes into the notes. Transposing by hand is quick, routine, and exactly the kind of task where a tired operator inverts a sign or shifts an axis through ninety degrees entirely. An instrument that speaks a practice's own convention removes that risk without anybody on the bench having to be especially careful about it.

Fitting Height Without a Ruler

Displaying the pupil height on screen brings a fitting measurement onto the same instrument as the powers. A progressive dispense depends upon that height placing the corridor in front of the pupil itself, and taking it from the instrument instead of a rule removes both a step and a source of variation between whichever staff happen happen to be measuring on any given day.

Honest About What Is Optional

The feature list marking the PD, ultraviolet and printer as optional is far more useful than silence would be, even though the data table below it then goes on to contradict the point. A practice reading the card carefully will know to ask, and the asking is what prevents an instrument arriving without the very function somebody had assumed was included within the quoted price.

The Visionstar JS-700AT presents cylinder as minus, mixed or plus, and reads sphere from minus 25.00 to plus 25.00D, cylinder from 0.00 to plus or minus 10.00D and addition from 0.00 to plus or minus 10.00D with two addition values. Axis covers 0 to 180 degrees and prism 0.00 to 10.00 in both directions, each selectable at 0.01, 0.12 or 0.25 steps. Contact lenses carry base curve from 6.00 to 9.00 with diameter down to 5mm, spectacle lens diameter runs 20 to 100mm, and coloured lenses at 10 per cent transmittance are measurable. Pupil height is displayed on the 5.7 inch TFT colour LCD and the data interface is RS-232.

Three points need settling before an order. The card names a second model number with one shared data set and nothing stated to separate them. The feature list marks the PD instrument, the UV instrument and the thermal printer as optional while the data table lists all three as though fitted, so what is included should be confirmed in writing. And four rows are garbled or incomplete: the contact lens row, the ultraviolet row, the addition row which repeats itself, and the PD row which gives one figure where a range belongs.

If your practice records in a particular cylinder convention, dispenses progressive lenses, or fits small contact lenses, speak to Medigear.uk. As a verified medical equipment supplier working across medical, dental, rehabilitation and aquatic therapy settings, the team will confirm exactly what is supplied.