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JVTFTA Adult Titanium Trial Frame 54-70 mm
JVTFTA Adult Titanium Trial Frame 54-70 mm - Image 2
JVTFTA Adult Titanium Trial Frame 54-70 mm - Image 3
JVTFTA Adult Titanium Trial Frame 54-70 mm - Image 4
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JVTFTA Adult Titanium Trial Frame 54-70 mm

Alloy Optometry Frame, Optical Trial Lens Frame for Eye Optometry Optician, Adjustable PD Lightweight Optical Trial Frame for Ophthalmology School

₹500.00

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SKU: JVBS510-1-1-1-1-1-3-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-7

Description

Plastic

Beads

Nylon

String

Beads

wood

Therapeutic

heavier cords

Product description

  • [Multi Adjustment Knobs] Optometry optician frame contains multiple knobs, which can be adjusted for interpupillary distance, nose pads, temples, etc.
  • [PD Adjustment Range] PD 48~80mm adjustment range for both eyes of the trial frame; left and right PD24~40mm adjustment range; minimum graduation value: 1mm.
  • [360° Rotation] The lens of the optical trial frame rotates 360° around the optical axes in frame, with high quality professional design and more flexible use.

TopicDiscription
PurposePurpose / Target UsersThis trial frame is designed for subjective refraction testing in an optometr ic/ophthalmologic setting. It enables placement of various trial lenses (spherical, cylindrical, prism) in front of the patient’s eyes to determine the correct prescription or refractive error. Because it is made of titanium (lightweight, durable), it is suitable for high-use clinical environments and for patients where fit and comfort matter. Target Users: Optometrists and ophthalmologists conducting routine eye exams. Clinics and hospitals performing manual refraction tests. Vision research labs where high precision trial frames are required. Perhaps dispensaries or optical labs where trial frames may be used for lens fitting or demonstration.
Optotypes / SymbolsThe trial frame itself does not include optotypes or symbols (i.e., it doesn’t display a chart). Instead it is used in conjunction with a visual acuity chart (Snellen, LogMAR, Lea, etc.) where optotypes or symbols are shown. Therefore the “optotypes/symbols” specification is largely chart-dependent and not inherent to the frame.
Scaling / SpacingInterpupillary Distance (PD) adjustment: Typically 54 mm–70 mm for the whole frame (i.e., this model allows the PD of both eyes combined to adjust within this range). For example: one manufacturer states “PD can be adjusted from 54mm to 70mm” Lens capacity/spacing: Holds up to 4 lenses per eye (in some models 3 in front + 1 behind) of standard size (38 mm diameter) for trial lens insertion. Axis graduation: Some models show the axis scale for cylindrical lens orientation; e.g., one model: left dividing disc 165°–0°–180°, right 45°–180°–60°.Adjustable temple length / nose pad / tilt: For proper fit and optical alignment. For example, adjustment of nose pad length 7.5–11 mm, angle 0°–20° in one model. Lens holder diameter: Example: inner diameter of lens frame: 34mm in one model.
Range of Acuity / Line SizesBecause this is a trial frame (not a chart), it doesn’t specify “line sizes” or “acuity levels” on its own. Those depend on the lens combinations used and the chart at the testing distance. What we can note: the frame supports all standard lens combinations (spheres, cylinders, prisms) and thus effectively supports testing from very poor acuity to high acuity, subject only to the chart and lenses used.
Testing DistanceThe frame itself is neutral in that respect — it’s used for distance or near refraction depending on the chart and target used. Standard clinical practice: distance refractive testing often at ~6 m (20 ft) or shorter with mirror systems; near testing at ~33–40 cm. The frame supports both scenarios as long as the observer uses the appropriate chart/target. Some product literature mentions “compatible with standard 38 mm lenses for vision testing” for adult models.
Physical Size & Dimensions

Physical Size & Dimensions
PD range: 54–70 mm (key dimension). Weight: Typical around 50g in one advanced titanium model. Lens holder inner diameter: e.g., 34 mm in one model. Temple (leg) length adjustment: e.g., 90–120 mm in one specification. Nose rest adjustment: length 7.5-11 mm, angle 0°-20° in the cited model. Some documentation gives dimension ranges for arm length for other frames (e.g., 88-124 mm) but not specific to this model. For clarity: since this is a frame you wear, “width/height” not always given, but the key dimension is PD adjustment and lens holder capacity.
Mounting / Display FeaturesMounting: It’s a wearable trial frame (like eyewear) placed on the patient’s face. Display features: The frame has engraved and graduated scales for PD, axis angle, etc. For example, in one spec: “Dividing disc axial graduation: left disc 165°–0°–180°, right disc 45°–180°–60°.” Lens rotation: Some models allow full 360° rotation of lens cells. Adjustable nose bridge, adjustable temples, pantoscopic tilt, to align the optical centers correctly and ensure patient comfort.
Features

Features
Material: Titanium (lightweight, strong) for the frame body. Many “titanium trial frame” models advertise ultra-light weight (~48-50 g) and high durability. Lens holders per eye: Often 3 front + 1 behind (so total 4 per eye) for flexibility in lens stacking. Adjustable PD, nose pad, temple length/angle, frame tilt — all designed for fit and accurate alignment of optical centers. Axis scale markings allow precise cylindrical lens orientation and astigmatism testing. Lightweight construction reduces fatigue for patients and examiner in prolonged testing. Some models have “one-touch PD adjustment” for convenience.
Included Accessories / Extras

Included Accessories / Extras
Specific model accessories vary by vendor. From available literature: Some trial frames include extra nose pieces (for fit/comfort). Protective case or storage box (especially in sets) may be included in kit versions. For example one spec: “Includes storage case.” Adjustment tools (screwdriver) may or may not be included depending on vendor. Some models mention spring-hinged temples for comfort. Because this is a professional tool, accessories like cleaning cloth, extra nose pads, or spare lens holder rings may be optionally supplied by vendor.
Durability / Material Qualities

Durability / Material Qualities
Titanium frame: Offers high strength-to-weight ratio, good corrosion resistance, excellent durability. The use of pure titanium or titanium alloy for the body is a key material quality marker.
Precision mechanical parts: e.g., axis discs, lens cell rotation, PD adjustment mechanisms. In one model non-parallelism 2.5°, non-concentricity 0.5 mm, displacement 0.3 mm — indicating tight manufacturing tolerances.
MercoFrames optical Corp
Finish and build: Given the clinical setting, the materials should resist repeated insertion/removal of lenses, repeated sanitization/cleaning (so surfaces should be smooth, joint tolerances minimal).
Longevity: With titanium and good mechanical build, the frame should remain accurate and stable over many years of use.
Usability / Marker of QualityQuick and smooth PD adjustment (especially 54-70 mm range) means easier fit for adult patients with different facial dimensions. Comfort adjustments (nose pad, temple legs, tilt) make the frame usable across different face shapes and reduce patient fatigue or slippage. Clear engraved scales for PD, axis, etc — allow precise alignment without guess-work. The ability to hold multiple lenses per eye (up to 4) offers flexibility in lens stacking without need for frequent changes. Lightweight construction (50g range) enhances comfort for patient and examiner.
Markers of quality: Use of titanium material: indicator of premium build. Tight mechanical tolerances (as noted above) — minimal non-parallelism, non-concentricity indicate precision manufacturing. Brand/vendor reputation: Equipment from well-known optical instrument manufacturers will have proven reliability and service support. Certification/standards: While many trial frames may not list separate certifications, product lines used in clinical settings often adhere to optical equipment standards and may carry CE mark or equivalent.Longevity and consistent performance: The frame should maintain alignment, scales, and fit over time without significant drift or wear.

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