Bifocal Glasses +3

 Composition:

1. **Lens Material:**

• **Plastic (CR-39):** Lightweight and offers good optical clarity.
• **Polycarbonate:** Impact-resistant and thinner than standard plastic.
• **High-Index Plastic:** Thinner and lighter for stronger prescriptions.

2. **Lens Design:**

• **Bifocal Segment:** Typically includes a distinct line separating the distance vision (upper part) and near vision (lower part) segments.
• **Add Power:** The lower segment is usually +3.00 diopters for near vision tasks.

3. **Coatings:**

• **Anti-Reflective Coating:** Reduces glare and improves visual clarity.
• **Scratch-Resistant Coating:** Enhances durability.
• **UV Protection:** Shields eyes from harmful ultraviolet rays.

### Dosages:

• **Distance Vision:** The upper part of the lens is typically set for distance vision, which may vary based on individual needs (e.g., -1.00 to -3.00 diopters).
• **Near Vision:** The lower segment is specifically designed for near vision tasks, set at +3.00 diopters.

### Indications:

Bifocal glasses with a +3 diopter strength are indicated for:

1. **Presbyopia:** Commonly prescribed for individuals over 40 who have difficulty focusing on close objects.
2. **Reading:** Ideal for activities such as reading, sewing, or any task requiring close-up vision.
3. **Computer Use:** Beneficial for those who spend extended periods working on computers, as they provide a clear view of the screen and nearby documents.
4. **General Daily Activities:** Suitable for individuals who need to switch between distance and near vision throughout their daily routines.

### Conclusion:

Bifocal glasses with a +3 diopter strength are an effective solution for individuals experiencing presbyopia, allowing for clear vision at both distance and near ranges. It is essential for users to have a comprehensive eye examination to determine the appropriate prescription and lens type for their specific needs.