An overall diameter measures across an outline. A location statement says where a region is; its area says how much space it occupies. Two equal outer circles can contain inner regions with different areas.
Prepared 11 November 2026 · PokerMagicShop.
PokerMagicShop operates the linked commercial catalog. This first-party comparison and its original illustrations were prepared with AI assistance. The circular examples are mathematical constructions, not products or tests.
The optical marked cards category lists “Polymacon thin-membrane soft lens, 14.2mm diameter” under Lens Type. That is a category-level descriptor; it is not a diameter assigned here to a particular SKU.
The separate Oculus Luminous Contact Lenses record describes commercial contact lenses with a “specialized spectrum filter on the pupil area.” This is a location statement. It supplies no diameter, shape or area for that region.
Keep the scopes separate: the category’s 14.2 mm is not being transferred to Oculus. The product’s location phrase is not a numerical size. These are the two different kinds of information the models help distinguish.
Use 14.2 mm as the stipulated outer diameter of both model circles, prompted only by the category number. Independently assume concentric circular inner regions of 4 mm and 6 mm diameter. These assumptions describe neither a curved lens surface nor an eye or an actual product region.
For a flat disk, area = π × (diameter ÷ 2)².
Model A: outer diameter 14.2 mm; assumed inner diameter 4 mm. The inner radius is 2 mm, so its area is π × 2² = 4π mm².
Model B: outer diameter 14.2 mm; assumed inner diameter 6 mm. The inner radius is 3 mm, so its area is π × 3² = 9π mm².
Original AI-assisted planar-circle illustration at one common scale. The category number prompts the model outer diameter; both inner diameters are assumptions. No product geometry or optical result is depicted.
Divide the exact inner areas: 9π ÷ 4π = 9/4 = 2.25. The model’s second inner region has 2.25 times the first region’s area, while the outer diameter remains unchanged.
When recording the catalog information, retain three separate questions: What dimension is stated, at what source scope? Where is the region described? What, if anything, supplies its extent? The two records answer different parts; the invented circles do not fill a missing product specification.
The 2.25 ratio compares flat areas only. It is not a ratio of transmitted light, field of view, spectral response, recognition performance or product quality, and it provides no fitting, wearing or medical advice.