Description
Plastic
Beads
Nylon
String
Beads
wood
Therapeutic
heavier cords
Product description
- Purpose: These prisms are used by behavioral optometrists and vision therapists to treat various visual problems, including homonymous hemianopia, visual neglect, and poor hand-eye coordination.
- Set Composition: The set typically includes 16 pairs of flat prisms with a range of powers to help assess and treat patients effectively. Common powers in such a set might include 0.25, 0.50, 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 25, 28, and 30 prism diopters (PD).
| Topic | Discription |
| Purpose / Target Users | While you know it’s for vision therapy/orthoptic prism use, the listing does not specify detailed target users (e.g., children vs adult) or exact clinical applications (diagnostic vs therapeutic). |
| Optotypes / Symbols | No information about printed optotypes, symbols, or letters on the lenses themselves; only prism powers listed. |
| Scaling / Spacing | The prism powers are listed (0.25–30D) but there is no detail on spacing in terms of visual tasks or how to use the increments for therapy protocols. |
| Range of Acuity / Line Sizes | Not specified—there is no stated visual acuity range or specific line sizes related to using these prisms. |
| Testing Distance | No information about recommended working/viewing distance for using the prism set (near, intermediate, distance). |
| Physical Size & Dimensions | The listing does not provide lens diameter, rim outer diameter, thickness of lenses, frame size, or weight specifications for this kit. |
| Mounting / Display Features | It is not clearly specified whether a mounting frame is included, nor how the prisms are mounted, nor whether the frame is adjustable (PD, nose‐pad, strap) or display features like base direction compass. |
| Included Accessories / Extras | The listing does not mention included accessories beyond the prisms themselves (e.g., case, frame, cleaning cloth, manual). |
| Durability / Material Qualities | The lens substrate (glass vs plastic), coatings (anti‑scratch, anti‑reflective), rim/frame materials, warranty or durability data are not given. |
| Usability / Marker of Quality | There is no explicit mention of optical tolerances (prism power accuracy, base direction accuracy), certifications (e.g., CE), user reviews or compatibility notes beyond the basic listing. |
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