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JVDFO Frosted and Black Double Ended Occluder
Handheld Eye Occluder Double-Sided Black and Frosted Translucent Cover for Vision Testing, Eye Exams, Strabismus Detection, Optometry Tools for Clinics, Hospitals, Labs
₹500.00
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Product description
- Double-Sided Design for Accurate Testing: This handheld eye occluder features a dual-ended design with one fully opaque black side and one frosted translucent side. The black side blocks all vision for full occlusion, while the frosted side allows limited light and visibility, enabling observation of the covered eye’s movement. Ideal for performing cover tests, uncover tests, and alternate cover tests in a clinical or educational setting
- Durable and Medical-Grade Construction: Crafted from high-quality, medical-grade plastic, this occluder is built to withstand daily use in hospitals, clinics, and vision therapy centers. Its sturdy construction resists bending and breaking, ensuring long-term reliability. The smooth surface is easy to clean and disinfect, maintaining hygiene standards between patients. It’s designed to meet the needs of busy eye care professionals
| Topic | Discription |
| Purpose | This tool serves as an eye occluder used in ophthalmic/optometric examinations. One end is frosted (translucent) which allows light through and visibility of the covered eye; the other end is black (opaque) which blocks vision entirely. For example, a manufacturer describes: “A double-ended occluder where one end is opaque and the other is frosted.” |
| Target users | Optometrists, ophthalmologists, orthoptists doing cover / uncover tests, motility tests, binocular vision assessments. Clinics dealing with paediatrics: the frosted end is particularly useful for children who may become anxious with full black occlusion (they still sense light and you can observe the eye). For example, in a flexible occluder variant: “The frosted Optishield is ideally suited to testing paediatric patients who may become concerned when occluded with black paddles.” Vision therapy specialists, neuro-ophthalmology/rehab settings where you might switch between full occlusion (black) and partial occlusion/observation (frosted) easily. Screening setups where efficiency of swapping between occlusion conditions is needed. |
| Optotypes / Symbols | As with single-ended occluders, the double-ended occluder itself does not display optotypes or symbols (letters or shapes for acuity). It is simply a tool to cover one eye. The “symbolic” aspect is minimal here: the difference is in the ends (frosted vs black) rather than optotype presentation. The clinician uses it in conjunction with optotype charts/tests (e.g., for acuity, motility) rather than it being a chart itself. |
| Scaling / Spacing | Because the occluder tool doesn’t present letters or lines, the usual “scaling/spacing” metrics of acuity charts do not apply. What does matter: the physical dimensions of each end (cup/paddle size), how well the black side blocks vision (no light leak or peripheral vision), how well the frosted side diffuses vision and allows observation of the eye. Thus when selecting you should ensure the cup size fits the patient’s orbit, handle length is sufficient for your testing distance, and the transitions are smooth between ends. |
| Size | This occluder does not specify a “range of acuity” or “line sizes” because it is not an acuity chart. Its role is to permit or block vision in one eye while the other eye is tested; the acuity results depend on the chart used. However, using the black end will allow full occlusion so the fellow eye can be tested to its full acuity potential; the frosted end allows partial occlusion or observation of eye behavior when full occlusion is unsuitable (e.g., latent nystagmus). If needed for special occlusion levels (e.g., minimal form vision), manufacturers may provide “very lightly frosted” versions (see other catalogues) but that is a separate product type; for our double-ended frosted/black occluder, full occlusion vs translucent only. |
| Testing Distance | The testing distance remains whatever the clinician uses for the associated test (e.g., 6 m for distance acuity, 40 cm for near, or whatever for motility). The occluder simply covers the non‐tested eye at that distance. The product spec does not mandate a testing distance; however the handle length and design are geared for typical exam room distances. Example: 24 cm length shows it is ergonomically sized for typical room setup. So you, as user, should ensure your setup (patient distance, room size) is compatible with handle length and reach of the occluder. |
| Dimensions | rom manufacturer specs: Length: approx 9.5″ (24 cm) for the double‐ended unit. Paddle/Cup diameter or shape: while not always given in these product listings, analogous single paddles often have ~6 cm width and about 2 cm thickness. Some spec: “cupped to a 70 mm radius” for paddles in other models. Material thickness, handle width, weight are typically left unspecified but you can infer: sufficient to cover the orbit and manage comfortable handling. So when you purchase: check (1) total length (should be around 22-25 cm for ease), (2) diameter/paddle width (>= ~50 mm so adequate coverage), (3) thickness and handle shape for hand comfort. |
| Mounting | This is a handheld tool not a mounted chart. One end is frosted, the other is black; you simply flip the occluder to the appropriate side for the test. For example: “Double‐ended occluder where one end is opaque and the other is frosted.” Cup/concave design to allow clearance of lashes/eyelids (reduces contact with patient’s face) – some occluders have this. Ergonomic handle so the examiner’s hand/arm does not obstruct vision or interfere with testing. Possibly angled handle or non-slip grip for comfort (some advanced models mention angled handles for other occluders, but not always this exact model). |
| Accessories | Typically, the double‐ended occluder comes as a single unit; accessories are minimal. For example the specification for SKU 681000 simply lists the occluder; no extra accessories. Some extras or variants in the broader product line may include: Alternate variations for the frosted side (lightly frosted, “see the eye” translucent) or pinhole variants (for different occlusion levels) in double‐ended style. For example: “Frosted and black occluder” appears in a product listing in a catalogue. Protective pouch or case (though seldom mentioned explicitly) – you may inquire with supplier. Alternate handle lengths (some long/short), but for the double‐ended model spec is standard. If you want accessories like clip-on versions (for spectacles) or spare paddles, you may need to buy additional items. |
| Durability / Material Qualities | Material: The double-ended occluder is made of durable plastic (ABS or equivalent). For example one description: “Durable … measures 9.5″ (24 cm).” Quality attributes: Smooth finish, no sharp edges to avoid patient discomfort or wear. The black (opaque) side must maintain full coverage—no thinning or light leakage over time. The frosted side must remain uniformly diffusing (not become scratched/polished to clarity) so you can still observe the covered eye through the frosted surface. The handle/paddle joint must be robust—handling in clinics can be heavy. Cleanability: the surface should tolerate disinfection/cleaning (wipes, solutions) without damage. While not always explicitly stated, some related models emphasize “easy to clean.” A higher-quality occluder will resist warping, cracking, handle‐wobble, and preserve the occlusion effect over time. |
| Usability | A good double‐ended occluder allows the clinician to quickly switch between frosted and black ends without changing tools—this saves time and allows flexibility (e.g., switch from full occlusion to “see the eye” mode seamlessly). The handle length (~24 cm) means comfortable reach for a seated or standing patient, without the examiner’s arm obstructing the chart or view. The paddle/cup design should enable full eye coverage with minimal intrusion, and the frosted side should allow observation of the covered eye movements. The dual‐end format means fewer tools need to be stocked—efficient for busy clinics. Good ergonomics, lightweight feel, and comfort for both patient and practitioner are important. For example, paediatric patients may tolerate the frosted end better (since it allows light) which enhances usability. |
| Marker of Quality | Trusted brand/manufacturer with good reputation Clear specification of length, dual‐ends, material. Durable plastic construction, robust handle/paddle interface. Consistent finish on both ends (opaque black side truly blocks vision; frosted side uniformly diffuses). Smooth edges, ergonomic handle, lightweight yet solid feel. Ease of cleaning/disinfection. Efficient dual functionality (one tool for two occlusion modes). Good user feedback in clinics (though not cited here, you should check reviews). Compliance with relevant standards (e.g., CE, ISO) when available. |
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