Visionstar YZ-11D

Rechargeable Lithium Handle

The main body runs from a rechargeable lithium battery pack rated at 3.7V, so the instrument works without a lead and without a supply of disposable cells.

Dedicated Charger

A special charger is described as supplied with the instrument, which the manufacturer relates to quick and convenient recharging between sessions.

Battery Protection Function

An anti-recharging and anti-discharging function is listed, presented by the manufacturer as protecting the battery pack over the life of the instrument.

Five Illumination Forms

Big spot, small spot, slit, net and red free are all listed, selected at the head so the examination need not be interrupted to reach any of them.

Slit and Net

The slit indicates elevation through the way it deforms across the retinal surface, while the net lays a graticule in the field for estimating position and relative size.

Red Free Setting

Removing red from the beam darkens the vessels against the retina behind them, sharpening the view of vascular detail and the nerve fibre layer.

Compensation Across 24 Positions

Dioptre compensation spans minus 35D to plus 20D with 24 positions in total, reaching into high myopia at one end and hypermetropic eyes at the other.

Halogen Illumination

The source is a halogen bulb rated at 3.5V and 2.8W, giving the familiar warm rendering that clinicians trained on halogen instruments are used to reading.

Mobile Inspection and Ward Work

The manufacturer describes the instrument as convenient for mobile inspection, and battery operation is what makes that real. A clinician can take it onto a ward round, into a care home or to a treatment room without a spare socket, and examine patients who would otherwise wait for a clinic appointment. Because charging happens on a dedicated charger between sessions rather than from a mains lead during them, nothing about the examination itself depends on where the patient happens to be.

Assessing Elevation and Position

The slit and the net lift the instrument above plain illumination. A slit falling across a raised or depressed area bends in a way that indicates contour, useful when the question is whether something stands proud of the surrounding retina. The net supplies a graticule so a finding can be sized and located against a fixed reference, which makes the note recorded today something a colleague can act on months later.

Vascular and Nerve Fibre Assessment

Red free illumination raises the contrast between vessels and the retina behind them, making calibre, crossings and small haemorrhages easier to judge and assisting with the nerve fibre layer. For clinicians seeing patients with diabetes or hypertension away from the main clinic, having that view on a carried instrument means a vascular question can be looked at where it arises.

Examining Across a Wide Refractive Range

Compensation from minus 35D to plus 20D across 24 positions brings both high myopes and hypermetropic patients into focus without an accessory lens. High myopes carry greater retinal risk and repay careful examination, and they are exactly the patients a narrower compensation range would leave blurred at the aperture.

Cordless Without Consumables

A rechargeable pack removes both constraints that limit a hand instrument. There is no lead deciding where the examination can happen, and no drawer of disposable cells to keep stocked or discover empty. A charger sitting on a shelf means the instrument is simply ready each morning. For a practice running domiciliary visits or ward sessions, the difference between an instrument that is charged and one that needs batteries found is the difference between examining a patient and deferring them.

Battery Care Designed In

The listed anti-recharging and anti-discharging function addresses the ordinary way rechargeable instruments fail, which is not sudden breakage but a pack that gradually stops holding useful charge through repeated mishandling. Protection of that kind matters most in shared equipment, where nobody in particular is responsible for how it was left on the charger overnight and habits vary between clinicians.

A Complete Set of Light Forms

Two spot sizes, a slit, a net and red free cover the ordinary run of observation requirements with nothing to fetch or fit. A clinician who notices something during a routine look can change how they are examining it immediately. That matters more on a carried instrument than a fixed one, because whatever is not built into the head is simply not present when the examination is happening at a bedside.

The Visionstar YZ-11D is built for clinicians who examine patients wherever they are. A rechargeable 3.7V lithium pack in the handle, a dedicated charger described as quick and convenient, and a listed anti-recharging and anti-discharging protection function together make cordless working sustainable rather than merely possible. Five illumination forms cover a big spot, a small spot, a slit, a net and red free, dioptre compensation spans minus 35D to plus 20D across 24 positions, and a halogen bulb rated at 3.5V and 2.8W supplies the light.

This page states what the supplied material states. The charger's mains electrical specification is deliberately not given here, and housing dimensions, mass, charging time, battery capacity, running time between charges, accessories, configuration and condition do not appear on that material. Nothing here should be read as a claim about testing or regulatory approval. Medigear.uk will confirm each of those points.

If your clinicians work across wards, homes or several rooms and want an instrument that travels with them, and you want the specification checked against how you actually work, speak to Medigear.uk. As a verified medical equipment supplier working across medical, dental, rehabilitation and aquatic therapy settings, the team will confirm what this instrument offers and help you judge whether it suits your service.