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JVFO Frosted Occluder
JVFO Frosted Occluder - Image 2

JVFO Frosted Occluder

Frosted Eye Occluder for Vision Testing – Durable Lightweight Plastic Eye Cover with Handle – White, 6.5 x 22 cm – Tool for Pediatric Eye Exams, Orthoptic Tests, Eye Clinics & Hospitals

₹500.00

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SKU: JVBS510-1-1-1-1-1-3-1-1-1-1

Description

Plastic

Beads

Nylon

String

Beads

wood

Therapeutic

heavier cords

Product description

  • The Frosted Occluder is for use during the cover test and vision testing.
  • When used during the cover test, this occluder provides total form occlusion, yet allows light into the eye behind the occluder. This can be especially useful in assessing the 3 components of dissociated vertical divergence (elevation, excyclotorsion, and abduction).
  • During vision testing, a frosted occluder can be useful in achieving the best visual acuity from someone with manifest or latent nystagmus.
  • The Frosted Occluder is very durable and can be cleaned with soap and water.

    TopicDiscription
    PurposeA frosted occluder is used in ophthalmic / optometric examinations to occlude one eye (or part of the visual field) while still allowing light through and enabling the examiner to see the covered eye.
    During cover tests (for strabismus / ocular motility) when you want to observe the “hidden” or occluded eye.
    In vision testing (especially in paediatrics or special cases) where full black occlusion might cause suppression, latent nystagmus, or anxiety – the frosted occluder offers partial occlusion but permits light and observation.
    In neuro-ophthalmology or rehabilitation settings (e.g., double vision, brain injury) where peripheral awareness or partial occlusion is required. For example the “Bi-Nasal Frosted Occluder” is used in TBI / stroke patients.
    Target usersOptometrists, ophthalmologists, orthoptists, vision therapists, paediatric eye clinics. Also useful in screening camps / special education settings.
    Optotypes / SymbolsUnlike acuity charts which feature optotypes (letters, symbols, Landolt rings, etc), a frosted occluder is a tool, not a chart. So it doesn’t itself present optotypes or symbols.
    It’s used in conjunction with optotype charts or tests. For example, you cover one eye to test the fellow eye’s acuity, or to perform a cover/uncover test; the occluder doesn’t display letters.
    The “symbol” aspect is irrelevant here; the key attribute is the frosted translucent surface that allows light in and visibility of the eye behind.
    Scaling / SpacingSince the occluder is not presenting optotypes or lines, classical “scaling” or “spacing” (as in acuity line sizes) doesn’t apply.
    What does matter: the size of the occluder surface (to fully cover the eye or part of the field), the handle length (for clinician reach), the radius/shape of the paddle, distance to the eye (comfort) and the “frosted” level (how much blur vs how much light). For example: one product says “cupped to a 70 mm radius”.
    The spacing between handle/occluder and patient’s eye is implicitly set by ergonomic design (handle length, width). Not formally specified like a test chart.
    SizeBecause the occluder is not an acuity chart, it does not provide a stated “range of acuity” or “line sizes”.
    However, in practice when you occlude one eye you may test the other eye’s acuity with standard charts; use of a frosted occluder helps prevent suppression or reflexive changes which might otherwise alter acuity results. For example, the frosted occluder is useful “in achieving the best visual acuity from someone with manifest or latent nystagmus”.
    If you want to effect a specific blur (e.g., reduce acuity to ~20/200 for binocular rivalry testing) there are “very lightly frosted 20/200 occluder” versions.
    Testing DistanceThe testing distance remains the same as the visual test being done (e.g., 6 m for distance acuity, 40 cm near, etc). The occluder’s job is to cover one eye during that test.
    For example, when doing a cover test at distance, you might stand 6 m away; you hold the occluder in front of the non-tested eye. The occluder doesn’t require a fixed distance itself.
    Some manufacturer spec: one handle is ~22 cm long (8.75”) for ease of use at various distances.
    DimensionsA “Frosted Occluder” from Kay Pictures: Dimensions 24 × 6 × 2 cm.
    One variant: Handle length 8-3/4 inches (~22 cm) for “See-the-Eye” occluder.
    Another: Cupped to 70 mm radius, handle ~25 cm length.
    Material: typically frosted plastic or acrylic paddle with handle; size enough to cover eye and orbit/field for occlusion.
    Weight: One spec: 0.021 kg (21g) for 24×6×2 cm version at Kay.
    MountingTypically handheld: The occluder comes with a handle and is held by the clinician or patient. No fixed mounting required.
    Some variants have dual ends (one side frosted, the other opaque) so the device serves two modes. Example: “Combination Frosted and Opaque Occluder … measures 9.5″ (24cm)”.
    Some versions are clip-on to spectacle frames (for hands-free occlusion)
    FeaturesFor display/usage: no chart, but the occluder needs to cover the eye fully, allow observation, be held steady by clinician.
    AccessoriesMost basic frosted occluders are single paddle devices, handheld, no extra attachments. Example: simple frosted occluder used for cover test.
    If you require sterilisation/disinfection, some mention compatibility (see durability section below).
    Durability / Material QualitiesMaterial: frosted plastic or acrylic; some models ABS plastic handle. Example: “moulded from strong, lightweight ABS plastic, with a easy-clean gloss finish” for Spielmann Occluder.
    Some features:
    The frosted surface is scratch-resistant in some models.
    Gulden Ophthalmics
    Some versions are described as “very durable” and “can be cleaned with soap and water”.
    UV-coated plastic in some models for durability (e.g., Bi-Nasal Frosted Occluder).
    Because the occluder is a handheld diagnostic tool, the build quality matters: a handle that won’t break, a paddle surface that won’t crack or scratch easily.
    Cleanability: Important in clinical settings. Models note compatibility with soap & water, alcohol wipes, etc. Example: Optishield (clip-on) says hygienic, washable.
    Optishield
    In summary: A high-quality frosted occluder will use durable plastic/acrylic, have a solid handle joint, maintain frosted finish after repeated cleaning, and resist warping or cracking.
    UsabilityA good frosted occluder should be comfortable to hold and manoeuvre, with a handle length sufficient to reach patient at distance, with minimal hand movement.
    The frosted surface should completely occlude form vision from the covered eye but allow light and permit observation of the covered eye (so the clinician can monitor alignment, movement).
    Minimal distraction for the patient (especially children): the frosted alternative is often preferred over opaque black paddles because it is less intimidating.
    Ergonomics: The paddle width should cover the patient’s eye/field; handle angle should allow comfortable use; materials should not reflect glare or distract.
    Clean and hygienic handling is important in busy clinics — smooth surfaces, minimal seams, easy to disinfect.
    Marker of QualityMaterial finish: A good frosted occluder has a consistent frosted finish (without clear “windows”), is scratch resistant, and allows the examiner to see the covered eye without disturbing the test.
    Handle/hinge durability: No wobble, no loose fit, good grip.
    Versatility: Some include dual ends (frosted & opaque) or clip-on options — more flexibility is a sign of quality.
    Cleanability/hygiene: If the surface is easy to clean and resistant to disinfectants, that adds to longevity.
    Ergonomic size: 22–25 cm length, appropriate paddle width (~6 cm or more) as many specs show (example 24×6×2 cm)
    Observational clearance: The clinican should be able to see the covered eye movements or position easily. If the frosted surface is too opaque or too thick, visibility may be impaired.
    Warranty/after-sales support: If manufacturer backs the tool, replacement parts or spares (though rare for a simple occluder) may be offered.

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