Eye care
How single-vision lenses work and how they compare with progressives and bifocals.
Last updated November 3, 2026 · General information only, not medical advice. Please see a licensed eye-care professional for your prescription and eye health.
Single-vision lenses have one prescription power across the whole lens. They are the most common lens type and can correct nearsightedness, farsightedness and astigmatism.
| Lens type | Zones | Typical use |
|---|---|---|
| Single vision | One | Distance or reading only |
| Bifocal | Two, with visible line | Distance + near |
| Progressive | Gradual, no line | Distance, intermediate and near |
Single-vision lenses suit most frame shapes, including those with shallow lens heights.
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