The diameter of a contact lens typically ranges between 13.80 and 14.50 millimeters (mm), with 14.00 mm and 14.20 mm being the most common sizes for commercially sold soft contact lenses.
Understanding Contact Lens Diameter
The diameter of a contact lens, just like in geometry, represents the length of one edge of the contact lens to the other. This measurement is crucial as it affects how the lens fits on the cornea and covers the eye. It is measured in millimetres (mm).
According to the reference provided:
- Typical Range: The diameter usually ranges between 13.80 and 14.50 mm.
- Most Common Sizes: For commercially sold soft contact lenses, the most common diameters are 14.00 mm & 14.20 mm.
Here's a quick look at the common diameter specifications:
| Characteristic | Measurement (mm) |
|---|---|
| Typical Diameter Range | 13.80 to 14.50 |
| Most Common Diameters | 14.00 & 14.20 |
Selecting the correct diameter is essential for comfortable wear and proper vision correction. An eye care professional determines the appropriate diameter during a contact lens fitting based on the size and shape of your eye.
