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✓ Certified Professional Seller Visionstar TF-S
Visionstar TF-S
Visionstar TF-S
Visionstar TF-S
Visionstar TF-S
Visionstar ENT, Ophthalmic & Sensory

Visionstar TF-S

Product Code: EOAS-OAVT-3428

The fullest build on its sheet, with extra adjusters where the others have none.

A frame that sets only pupil distance leaves height and angle to chance. The TF-S adds visible adjusters at the front and sides, packing at 0.2 kg in an 18.5 × 10.5 × 6 cm unit.

Sections
Trial Lens Sets & Frames
Categories
ENT, Ophthalmic & Sensory
Condition
New
Origin
China
Seller Type
Certified Professional Seller
CE & ISO Certified
Global Shipping
Supplier: Medigear
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The Visionstar TF-S is a PD-adjustable trial frame, one of three models on a shared sheet with the TF-B and TF-BT. The published data gives a unit gross weight of 0.2 kg and a unit size of 18.5 × 10.5 × 6 cm. Unlike its siblings, no carton quantity, carton weight or carton size is listed under this model.

Both of its published figures are the largest on the sheet. It weighs 50 g more packed than the other two, and its unit is the biggest. The photograph suggests why. The TF-S shows a black body with bright cells, a top bar carrying the interpupillary adjuster, and additional knobs and fittings at both ends of the front and on the temples. Its siblings show fewer visible controls.

Those extra adjusters are the reason to choose it. A frame that adjusts pupil distance alone places the lenses correctly from side to side, but their height relative to the pupils, their distance from the eye and their tilt are left to how the frame happens to sit. A frame that can adjust those as well lets a clinician place each lens as a pair of spectacles would hold it, which matters most at higher prescriptions, where small positional errors produce measurable prism and power changes.

The trade-off is weight and bulk. A fuller mechanism adds grams on the patient's face and space in the cupboard. For routine low-power refraction a simpler frame may be preferable; for complex prescriptions, the extra control earns its place.

What the adjusters actually control is not stated, and it is the first thing to establish. Also unpublished are the interpupillary range, lenses per cell, net frame weight, cell diameter, material, carton details, and whether the cell scales are axis calibration.

Higher prescriptions are the clearest fit. As power rises, small errors in lens height, distance and tilt produce measurable prism and effective power changes, and a fully adjustable frame lets the clinician remove them.

Anisometropia benefits similarly, since unequal powers between the eyes make any positional error unequal too, which confuses a binocular assessment.

Refraction for progressive and high-index lenses suits a frame that can mimic the fitted spectacles closely, with the lenses sitting where the final pair will.

Low vision assessment often involves strong corrections held for extended periods, where precise positioning matters more than usual.

Teaching clinics can use the extra adjusters to show students how each positional variable affects the refraction.

Complex cases referred from routine clinics suit a frame reserved for work that needs full control.

Routine low-power refraction gains little from the additional mechanisms, and a lighter, simpler frame may be more comfortable.

Elderly and frail patients having long tests may find the extra weight noticeable, which is worth weighing against the need for adjustment.

More than pupil distance

Additional adjusters let the lens position be set in more than one direction.

Suits higher prescriptions

Positional errors that matter little at low power become significant as power rises, and this frame addresses them.

Mimics fitted spectacles

Lenses can be placed as a finished pair would hold them, which suits progressive and high-index work.

Fullest build on its sheet

The largest unit and highest weight in the family reflect the extra mechanism.

PD-adjustable

Set for each patient rather than chosen from fixed sizes.

Scaled cells

Printed markings around each rim, subject to confirmation as axis calibration.

A teaching tool

Visible controls help students understand how each adjustment affects the result.

A specialist frame

Well suited to being reserved for complex cases alongside simpler everyday frames.

Its trade-offs stated plainly

Weight, bulk and the unstated function of the adjusters are flagged here before ordering.

Additional adjusters

Knobs and fittings at the ends of the front and on the temples. Their functions are confirmed at order.

Top-bar PD adjuster

Interpupillary adjustment on the top bar, as shown in the photograph.

Black body with bright cells

A dark frame with metallic lens cells.

Scaled cells

Printed markings around each rim. Axis calibration confirmed at order.

Unit gross weight

0.2 kg, including packaging.

Unit size

18.5 × 10.5 × 6 cm.

Carton details

Not listed for this model. Confirmed before any bulk order.

Interpupillary range

Not published. Confirmed before supply.

Lenses per cell

Not published. Confirmed before supply.

Net frame weight

Not published. Obtained before supply.

Cell diameter

Not published. Confirmed against your trial lens set at order.

Material

Not specified. Confirmed at order.

The Visionstar TF-S is the fullest build of three PD-adjustable frames on its sheet, heavier and larger when packed, with additional adjusters visible at the front and sides where its siblings show fewer. Those adjusters are the reason to choose it: they let a clinician set lens height, distance or tilt as well as pupil distance, which matters for higher prescriptions, anisometropia, progressive lens work and low vision. The cost is weight and bulk, so a lighter frame may suit routine refraction better. What the adjusters actually control, the interpupillary range, lens capacity and net weight are all unpublished, and no carton details are listed. Medigear.uk establishes each in writing. Contact the Medigear.uk team for pricing.

FAQ

Frequently Asked Questions

Everything buyers need to know about sourcing medical equipment through MediGear.

Not stated, and it matters. The photograph shows additional knobs and fittings at the ends of the front and on the temples. On trial frames these usually set vertex distance, pantoscopic tilt, nose pad height or temple length. Medigear.uk establishes exactly which before you order.

Because pupil distance is only one of the positions that affects a trial lens. Height, distance from the eye and tilt all change the effective power and introduce prism when they are wrong. At higher prescriptions those errors become measurable, and a fully adjustable frame lets the clinician remove them.

No. It is a gross weight including packaging. The frame itself weighs less, but it is still likely to be the heaviest of the three models on the sheet. We obtain the net figure, which is what the patient feels.

On long refractions, and for elderly or frail patients, it can be. A fuller mechanism is a trade between control and comfort. Where prescriptions are routine and low, a lighter frame may suit better; where they are complex, the adjustment usually justifies the weight.

The sheet lists carton quantity, weight and size only under the TF-BT column. Whether the TF-S ships in cartons, and in what quantity, is not stated. We confirm packing before any bulk order.

Not stated on the sheet, which is the most important gap for a PD-adjustable frame. We confirm the range before supply.

Not stated. Fully adjustable trial frames commonly take four per side. We confirm the figure before you order.

The sheet gives it a larger unit size and a higher gross weight, and the photographs show more adjustment hardware. The functional differences are not stated, so we confirm them in writing.

The photograph shows printed markings around each rim, which usually indicates axis calibration, but the data does not say so. We confirm before you order.

Not published. Trial lenses are commonly 38 mm, and the frame must match the set you own. We confirm the cell diameter before you order.

A trial frame is generally a Class I medical device under the UK Medical Devices Regulations 2002. Medigear.uk confirms CE marking, the declaration of conformity and UKCA status at quotation.

Check each adjuster still holds its setting, since a frame with more mechanisms has more that can drift. Keep the cells free of lens debris and store it cased. Typical warranty is 12 months, confirmed at quotation.