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✓ Certified Professional Seller Visionstar TF-4880A
Visionstar TF-4880A
Visionstar TF-4880A
Visionstar TF-4880A
Visionstar TF-4880A
Visionstar ENT, Ophthalmic & Sensory

Visionstar TF-4880A

Product Code: EOAS-OAVT-3358

Four lenses per eye, sixty-two grams, and no room required.

A trial frame refracts where a phoropter cannot go. The TF-4880A adjusts from 48 to 72 mm, takes four lenses on each side, and weighs 62 g.

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-4880A is a multifunctional trial frame. The published data gives three figures: an interpupillary adjustment range of 48 to 72 mm, four lenses inserted simultaneously per side, and a weight of 62 g.

Those figures describe a conventional full-feature frame. The 48 mm lower limit reaches narrower interpupillary distances than many frames manage, which matters for children and for adults at the narrow end of the range, while 72 mm covers most adults. Four cells per eye allow a sphere, a cylinder, an auxiliary lens and a prism together without swapping lenses mid-test.

At 62 g the frame sits in the middle of the range. Lighter titanium frames exist for patients who find weight uncomfortable during a long refraction, and the trade-off is usually cost and rigidity rather than function.

The photograph shows a frame with knurled adjustment wheels at the temples, a bridge adjuster above, rotating cells with degree scales, and folding sides. That is the usual arrangement for a frame described as multifunctional, meaning it adjusts for interpupillary distance, vertex distance, pantoscopic tilt and temple length rather than for interpupillary distance alone.

One point needs flagging before ordering. The manufacturer's own sheet captions two different frames as "TF4880A", one at 48–72 mm and 62 g, the other at 48–80 mm and 65 g. This page describes the first. Medigear.uk confirms which specification a given order supplies, since the difference in interpupillary range is material for a practice seeing wider-set adults.

Unpublished are the cell diameter, the vertex and tilt adjustment ranges, the frame material and finish, the case, and whether a trial lens set is included.

Domiciliary work is the clearest use. A trial frame is the only practical way to refract a patient in their own home or a care setting, and the published weight and adjustment range are what determine whether a long visit is comfortable.

Paediatric refraction benefits from the 48 mm lower limit, since a frame that will not narrow far enough cannot be centred on a child's eyes, and a decentred lens introduces unwanted prism.

Wheelchair users and patients who cannot reach a phoropter are served by a frame that goes to the patient rather than requiring the patient to come to an instrument.

Low vision assessment relies on trial frames, since patients need to look around, read and move while wearing the correction rather than through a fixed instrument.

High prescriptions are checked in a trial frame because vertex distance can be set and measured, which a phoropter approximates.

Four cells per eye suit complex prescriptions, where sphere, cylinder, prism and an auxiliary lens must be in place together.

Long or repeated refractions raise the weight question, and practices doing many of these may prefer a titanium frame at 40 to 50 g.

Teaching clinics use trial frames to demonstrate the components of a prescription in a way a phoropter conceals.

Refracts where a phoropter cannot

A frame travels to the patient, which suits homes, care settings, wheelchairs and any room without an instrument.

Four lenses in place at once

Sphere, cylinder, prism and an auxiliary lens can all be held together, so the test is not interrupted.

Reaches narrow interpupillary distances

A 48 mm lower limit centres correctly on children and narrow-set adults, where many frames stop short.

Adjusts in more than one plane

A multifunctional frame sets vertex distance and tilt as well as interpupillary distance, which matters at higher powers.

A moderate weight

At 62 g the frame is comfortable for a standard refraction, with lighter options available where longer testing is routine.

Natural viewing

The patient can look around, read and move while corrected, which a fixed instrument prevents.

A check on a phoropter result

High prescriptions are confirmed in a frame where vertex distance is set rather than assumed.

No installation

Nothing to fit, power or service in the room.

A data sheet error caught

The duplicated model caption is identified here and resolved before ordering rather than after delivery.

48–72 mm interpupillary adjustment

The published range, reaching narrower than many frames manage.

Four lenses per side

Four cells each side accept lenses simultaneously.

62 g weight

The published frame weight.

Multifunctional adjustment

Vertex distance, pantoscopic tilt and temple length adjustment indicated by the frame type and photograph. Ranges are confirmed at order.

Rotating cells with scales

Degree scales on the cells for cylinder axis setting, as shown in the photograph.

Cell diameter

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

Vertex and tilt ranges

Not published. Confirmed at order.

Frame material and finish

Not specified. Confirmed at order.

Case

Not stated. Confirmed at quotation.

Trial lens set

Not stated as included. Confirmed at quotation.

Approved cleaning agents

Not published. Obtained before supply.

Model caption discrepancy

Two frames share the TF4880A caption on the manufacturer's sheet. The supplied specification is confirmed in writing.

The Visionstar TF-4880A is a multifunctional trial frame with a 48–72 mm interpupillary range, four lens cells per eye and a 62 g weight. Those figures suit domiciliary visits, paediatric refraction, wheelchair users, low vision assessment and any situation where the correction must go to the patient. The 48 mm lower limit is the most useful of the three, since it centres properly on children where many frames cannot. Two things need settling first: the cell diameter against the trial lens set you already own, and which specification you are being supplied, because the manufacturer's sheet captions two different frames with this code. Medigear.uk confirms both in writing, along with vertex and tilt ranges, material and case. Contact the Medigear.uk team for pricing and compatibility.

FAQ

Frequently Asked Questions

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

That the frame adjusts in more than one plane. A basic frame sets interpupillary distance only, while a multifunctional one also adjusts vertex distance, pantoscopic tilt and temple length, so the lenses sit where a spectacle lens would rather than merely in front of the eye. That matters for accuracy at higher powers.

From 48 to 72 mm according to the published data. The 48 mm lower limit is useful, since many frames stop higher and leave children and narrow-set adults poorly served. At the upper end, 72 mm covers most but not all adults.

Because it appears to contain an error. Two panels are captioned TF4880A with different specifications, 48–72 mm at 62 g and 48–80 mm at 65 g. We confirm in writing which you are being supplied before your order is placed, and can source the wider-range version if that is what you need.

A complete prescription without swapping lenses mid-test. Sphere, cylinder, an auxiliary such as a pinhole or occluder, and a prism can all be in place at once, which shortens the examination and reduces the handling of loose lenses.

It is moderate. Patients rarely comment during a short refraction, but weight is felt during longer or repeated testing, and by children and frail patients. Titanium frames weighing 40 to 50 g are available where that matters, at higher cost.

Not published. Trial lenses are commonly 38 mm, and a frame must match the set it is used with. We confirm the cell diameter against the trial lens set you already own before you order.

Not stated. Trial frames are often supplied in a case, with lenses sold separately. We confirm exactly what is included at quotation so there is no assumption either way.

Not specified for this model. The same data sheet separately identifies two titanium frames, which implies this one is not titanium, but that is inference rather than fact. We confirm material and finish at order.

Trial frames contact the nose, temples and often the brow, so they need wiping between patients. The manufacturer's approved cleaning agents are not stated, which matters because repeated alcohol wiping degrades some finishes and loosens adjustment mechanisms over time. We obtain the guidance.

Domiciliary visits, paediatric work, wheelchair users, patients who cannot sit at an instrument, low vision assessment, and any refraction needing the patient to move around or look through the correction naturally. It is also the check on a phoropter result at high powers.

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 rather than asserting them here.

Check that the adjustment wheels still hold their setting, since a frame that drifts mid-refraction produces a wrong result rather than an obvious fault. Keep the cells clean and free of lens debris, and store it in a case. Typical warranty is 12 months, confirmed at quotation.