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JVMRS Maddox Rod Set
The Maddox Rod Set is an ophthalmic tool used to detect and measure eye alignment deviations (heterophorias and heterotropias). The tool itself typically consists of one or more handheld or trial-frame-mounted cylindrical lenses, often one red and one clear/white, which distort a point source of light into a line.
₹500.00
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Description
Plastic
Beads
Nylon
String
Beads
wood
Therapeutic
heavier cords
Product description
- Cylindrical Lenses: The rod is made of a series of parallel, plano-convex cylindrical lenses. When a patient looks at a point source of light through it, the light is refracted into a line (or streak) of light that is perpendicular to the orientation of the cylinders.
- Dissociation: By placing the Maddox rod in front of one eye (often the right eye with a red rod, so that eye sees a red line), the patient views a white light with the other eye. The images presented to each eye are so different that the brain cannot merge them.
| Topic | Discription |
| Purpose / Target Users | The Maddox Rod Set is intended for binocular vision testing — specifically it is used to assess horizontal or vertical phorias/tropias by presenting a line image from a point light source via a cylindrical‑lens rod. The product page lists it under “Examination Tools, Maddox”. |
| Optotypes / Symbols | The device doesn’t use optotypes (letters or symbols) — rather it produces a line streak via the rod. The listing does not provide any further “symbol” details. |
| Scaling / Spacing | No information is given about groove spacing of the rod or scaling relative to testing distance. |
| Range of Acuity / Line Sizes | Not applicable in the normal “acuity chart” sense (no line sizes for 20/20 etc) and not specified. |
| Testing Distance | The website does not state a recommended near or distance working distance for use of the rods. |
| Physical Size & Portability | The page gives no dimensions (length, diameter, weight) of the rods in this set. |
| Mounting / Display Features | There is no description of mount or how the rods are held/used (handheld, in trial frame, stand) on the listing. |
| Included Accessories / Extras | The page states: “includes: Red, Green and White Maddox”.So the set contains three rods (colours red, green, white). |
| Durability / Material Qualities | No details on materials of the handles, lens rods (glass/plastic), protection case, or durability under repeated clinical use. |
| Usability / Marker of Quality | The listing does not mention certifications (ISO, CE) or independent validation of accuracy, nor user reviews. Only the basic listing of contents is present. |
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