Visionstar FA-6100

Forehead and Chin Rest

A forehead rest and an adjustable chin rest with its own knob position the patient's head, with the measuring window sitting directly in front of them.

One Handed Control Stick

All operations including up and down, right and left, forward and backward, and start are controlled through one control stick using a single hand.

Auto and Manual Focus

Both automatic and manual focusing are described, so an operator can let the instrument focus or take over where a particular patient makes that easier to do.

Automatic PD Measurement

Pupillary distance is calculated automatically after measurement, so the figure comes from the instrument and is not taken separately with a rule.

Two Millimetre Minimum Pupil

Minimum pupil size is 2.0mm, which the manufacturer relates to a broader measurement range than an instrument of this kind would ordinarily offer.

Spherical and Cylinder Ranges

Spherical runs from minus 20 to plus 20 at a vertex distance of 12, and cylinder from minus 8 to plus 8, each selectable at 0.12 or 0.25 resolution steps.

Keratometry on the K Variant

Radius of curvature covers 5.0 to 10mm in 0.01mm increments, corneal power 33.75 to 67.50D at an index of 1.337, and corneal diameter 2.0 to 14.0mm in 0.1mm increments.

Stick Locker and Limit Screw

A stick locker and a limit screw restrain the moving part, with function switches on the base alongside the LCD screen and the measure button itself.

Patients Who Need Supporting

A forehead rest with an adjustable chin rest is what makes a reading obtainable from someone who cannot hold a position unaided. Older patients, children and anyone unsteady are all easier to measure when the head is properly supported rather than simply held. For a practice with that sort of caseload, patient positioning matters more than most of the figures on a specification sheet do.

Patients With Small Pupils

A 2.0mm minimum pupil is the figure worth noticing. Older patients, those on certain medications, and anyone measured in a bright room may all present pupils too small for a less capable instrument to read. Getting a result where another machine returns nothing is not a marginal gain, since the alternative is no objective starting point available at all.

Single Operator Working

One handed control of every movement matters where one person runs the whole appointment. With the other hand free for the patient, the chin rest knob or the notes, an operator is not obliged to keep releasing and regripping controls. In a practice where the same person seats the patient and takes the reading, that is felt on every single measurement taken.

Contact Lens Fitting

The K variant is the one to choose here. Radius of curvature from 5.0 to 10mm in 0.01mm increments and corneal diameter from 2.0 to 14.0mm give the corneal figures a fitting depends upon, alongside corneal astigmatism to 8.00D. A practice fitting lenses regularly needs all of those, and the A variant would leave them without any of of those corneal figures at all.

Built Around the Patient's Head

The forehead rest, adjustable chin rest and chin rest knob are the parts a patient actually experiences, and they determine whether a reading can be taken at all from someone unsteady. An instrument that positions a head properly turns a difficult patient into an ordinary one to measure, which is worth considerably more in practice than any marginal difference in measuring range would ever be.

Readings Where Others Fail

Minimum pupil size decides which patients an autorefractor can actually measure at all, and 2.0mm is a genuinely useful useful figure indeed to have. For an older caseload, or any practice that cannot dim its consulting room properly, the difference between an instrument which reads a small pupil and one that cannot is the difference between a starting point for the refraction and having nothing whatever to work from.

Honest About What Differs

This instrument shares its published specification with the other models on that same sheet, and the difference between them is the body itself rather than any measuring capability. Saying so plainly is more useful to a purchaser than implying some distinction the published data does not support, because it directs the decision toward seeing the instruments and then choosing whichever form factor best suits the consulting room.

The Visionstar FA-6100 is offered in two variants: the A as an auto refractometer, the K as an auto refractometer with keratometer. Spherical runs from minus 20 to plus 20 at a vertex distance of 12, cylinder from minus 8 to plus 8, both selectable at 0.12 or 0.25 resolution, with axis across 0 to 180 degrees, pupil distance from 45 to 88mm and a minimum pupil size of 2.0mm. The K variant adds radius of curvature from 5.0 to 10mm, corneal power from 33.75 to 67.50D and corneal diameter from 2.0 to 14.0mm. A forehead rest, adjustable chin rest, one handed control stick, automatic PD calculation, fogging chart and thermal printer are fitted. The instrument measures 483 by 268 by 452mm and weighs 16kg.

Two things should be understood before ordering. This model shares its published technical data with the other model numbers on the same sheet, so the difference between them is the body and control arrangement rather than measuring capability. Separately, the card carries three printing faults: a keratometry heading naming a model not offered, a CRT monitor bullet contradicting the TFT LCD specification, and two garbled rows.

If your practice measures patients who need supporting, works with one operator per room, or fits 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 which body and which variant suit your consulting room.