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ENT, Ophthalmic & Sensory
Visionstar WT-01

✓ Certified Professional Seller

Visionstar ENT, Ophthalmic & Sensory

Visionstar WT-01

Product Code: EOAS-ECA-3726

Count the lights at near, then again at distance, and the fusion picture fills in.

Examine binocular fusion with a Worth four-dot torch and a red and green filter viewer, stored in a fitted box. The photographs show a black torch with a wrist strap and coloured lights on its face, and a black handheld viewer with one red and one green filter.

Sections

Examination Lenses & Racks

Categories

ENT, Ophthalmic & Sensory

Condition

New

Origin

China

Seller Type

Certified Professional Seller

CE & ISO Certified

Global Shipping

Supplier: Medigear

At 33 cm, the four lights of a Worth torch span roughly six degrees of the visual field. At six metres they span a little over one. That difference shapes the whole test: at near it checks fusion across a wider, more peripheral area, and at distance it narrows to the central field, where a small suppression area may reveal itself. The WT-01 is built for that sequence, with a handheld torch that can be used at near and carried back across the room to distance.

The datasheet states one feature, "examination of binocular image fusion function". The photographs show a black torch with a wrist strap, whose face carries coloured lights, including white and red. With the classic Worth arrangement, four lights sit in a diamond: one red, two green and one white. The viewer is a black lorgnette-style frame with a red filter on one side and a green filter on the other, and a short handle. A fitted box with a foam insert holds the torch and viewer.

In use, the patient looks through the viewer, conventionally with red before the right eye, and says how many lights are seen. Four lights suggest fusion, or harmonious anomalous correspondence if a manifest squint is present. Two red lights suggest suppression of the eye behind green, and three green lights suppression of the eye behind red. Five lights indicate diplopia, and alternating counts suggest alternating suppression. The datasheet does not confirm the light layout, the power source or the filter transmission.

Medigear.uk lists the WT-01 and can arrange delivery worldwide. Request confirmation of the light arrangement and colours, the battery type, filter details, dimensions and the declaration of conformity from the seller before order.

Orthoptic departments use the Worth four-dot test routinely in children and adults with strabismus, amblyopia or double vision. The torch format lets the test be done at near and then repeated at distance in the same room, giving a fuller picture of fusion and suppression.

Paediatric clinics can use the test once a child can count to four and describe colours. The handheld viewer is held briefly in front of the eyes, which suits children who will not wear goggles for long.

Assessment before and after strabismus surgery often includes a Worth test, since the result helps show whether fusion is possible and whether it has changed after surgery.

Primary care optometry can use the WT-01 when investigating double vision, suspected suppression or a manifest deviation found on cover testing.

Neuro-ophthalmology and eye casualty services can use the test in patients with new diplopia, alongside cover tests and ocular motility assessment.

Teaching clinics can use the kit to show students how each response is produced, working through fusion, suppression and diplopia in turn.

Moving the torch gradually from near to distance can also show where fusion breaks down, which helps estimate the size of a suppression area.

Domiciliary orthoptic services can carry the boxed kit to homes and schools, since the torch needs no mains supply and the viewer is small.

The WT-01 is less suited to clinics needing the light arrangement, filter data or power source confirmed before purchase. Any declaration of conformity is issued by the manufacturer and provided by the seller.

Near and Distance Testing

A handheld torch can be used at 33 cm and carried to distance in the same session.

Clear Response Patterns

Two, three, four or five lights each point to a different finding.

Handheld Viewer

A lorgnette-style viewer, per the photographs, is held in front of the eyes with nothing to fit.

Wrist Strap

A strap on the torch, per the photographs, helps prevent drops during testing.

Fitted Box

A foam insert holds the torch and viewer, per the photographs.

Suits Children

Counting lights is a simple task for many young patients.

Useful for Monitoring

Repeating the test at follow-up shows change after treatment or surgery.

Portable

The boxed kit suits domiciliary orthoptic visits and multi-room clinics.

Stated Purpose

"Examination of binocular image fusion function", per the datasheet.

Torch

Black, handheld, with a wrist strap and coloured lights on the face, per the photographs.

Light Arrangement

Not published. White and red lights visible in the photographs.

Viewer

Black lorgnette-style frame with one red and one green filter and a short handle, per the photographs.

Box

Rectangular, with a foam insert holding the torch and viewer, per the photographs.

Power Source

Not published.

Filter Transmission

Not published.

Materials

Not published.

Dimensions and Weight

Not published.

Device Class

Typically Class I under UK MDR 2002, or higher, use-dependent, confirmed against the declaration of conformity at order.

Warranty

Terms set by the seller at quotation.

The WT-01 is a Worth four-dot test set, with a handheld torch on a wrist strap, a red and green filter viewer and a fitted box. The patient counts the lights seen through the filters, and the number points to fusion, suppression or diplopia, with testing at near and at distance covering peripheral and central fusion. The datasheet does not confirm the light arrangement, power source or filter data, so check each on arrival. Medigear.uk lists the WT-01 for business buyers worldwide and can arrange delivery. Request those details and the declaration of conformity from the seller at quotation.

FAQ

Frequently Asked Questions

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

A test of binocular fusion. The patient views a pattern of red, green and white lights through red and green filters, so each eye sees only some of the lights, and the number reported shows whether the two eyes' images are being combined.

The photographs show a torch with a wrist strap, a red and green filter viewer, and a box with a foam insert. The datasheet does not list contents, so confirm with the seller.

Four lights suggest fusion, or harmonious anomalous correspondence with a manifest squint. Two red lights suggest suppression of the eye behind green. Three green lights suggest suppression of the eye behind red. Five lights indicate diplopia. Alternating two and three suggests alternating suppression.

At 33 cm the lights cover a larger area of the visual field, so the test checks more peripheral fusion. At 6 m they cover a small central area, so a central suppression scotoma may show only at distance.

By convention, the red filter is placed before the right eye. Keep the same convention for every patient so results can be compared.

The photographs show coloured lights including white and red on the torch face. The classic arrangement is one red, two green and one white in a diamond. Ask the seller to confirm the WT-01 arrangement.

The datasheet does not say. Ask for the battery type and expected battery life.

Not published. The red and green filters need to block the opposite colour well for the test to work. Check them against the torch on arrival.

Under UK MDR 2002 it is typically Class I, or higher, use-dependent, confirmed against the declaration of conformity at order. The declaration is issued by the manufacturer and provided by the seller. Conformity requirements differ by destination market, and the seller confirms what applies where the unit is going. In UK workplaces the torch is also work equipment under PUWER 1998.

None are claimed on the datasheet, and none are cited here. Ask the seller about electrical and battery safety documentation for the torch.

Orthoptists, optometrists and ophthalmologists in orthoptic departments, paediatric clinics, binocular vision clinics and hospital eye services. In the UK, orthoptists are registered with the Health and Care Professions Council, optometrists with the General Optical Council under the Opticians Act 1989, and ophthalmologists with the General Medical Council.

A clinic that needs the light arrangement, filter data and power source confirmed before purchase should wait for the seller's specification. Patients who cannot count or describe lights reliably need other methods.