SVD glasses, according to the provided reference, refers to Single Vision Distance glasses, designed for distance vision correction only.
In simpler terms, SVD glasses are eyeglasses prescribed to help you see objects that are far away more clearly. They are a type of single vision lens, meaning the entire lens has the same corrective power. This differs from multifocal lenses like bifocals or progressives, which have different powers for different distances.
Understanding Single Vision Lenses
Single vision lenses, in general, are prescribed for one specific visual need. The reference also mentions Single Vision Near (SVN) glasses. Here’s a comparison:
| Feature | SVD Glasses (Single Vision Distance) | SVN Glasses (Single Vision Near) |
|---|---|---|
| Purpose | Correcting distance vision | Correcting near vision |
| Use Case | Driving, watching TV, seeing far objects | Reading, close-up work |
| Lens Power | Single corrective power for distance | Single corrective power for near |
Importance of Pupillary Distance (PD)
The reference also highlights the importance of Pupillary Distance (PD). It states that "PD – Pupillary Distance, or the distance between the centers of the two pupils between the eyes. This measurement is essential to designing glasses that are comfortable to wear."
Therefore, when you get SVD glasses (or any glasses), your PD is a crucial measurement to ensure proper lens alignment and comfortable vision.
Key Takeaways about SVD Glasses:
- They are specifically for correcting distance vision.
- The entire lens has one power for distance correction.
- Accurate pupillary distance (PD) measurement is crucial for comfortable wear.
- Examples of use: driving, seeing street signs, watching movies in a theater
