Bifocal Glasses +1.5
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, suitable for stronger prescriptions.
2. **Lens Design:**
- **Bifocal Segment:** The lower part of the lens is designed for near vision, typically with a +1.5 diopter addition.
- **Distance Vision Segment:** The upper part of the lens is for distance vision, which may have a different prescription or be plano (no correction).
3. **Coatings:**
- **Anti-Reflective Coating:** Reduces glare and improves visual clarity.
- **Scratch-Resistant Coating:** Enhances durability.
- **UV Protection:** Shields eyes from harmful ultraviolet rays.
### Dosage:
- **Lens Strength:** +1.5 diopters for the near vision segment.
- **Distance Vision Segment:** This may vary based on the individual's distance vision needs, which could be plano or another prescription.
### Indications:
1. **Presbyopia:**
- Commonly prescribed for individuals over the age of 40 who have difficulty reading or seeing objects up close.
2. **Visual Acuity Needs:**
- Suitable for those who require correction for both distance and near vision, allowing for seamless transition between different focal lengths.
3. **Occupational Use:**
- Beneficial for individuals who engage in activities that require both near and distance vision, such as reading, computer work, and driving.
4. **Convenience:**
- Ideal for patients who prefer not to switch between multiple pairs of glasses for different tasks.
### Conclusion:
Bifocal glasses with a +1.5 diopter strength are an effective solution for individuals experiencing presbyopia, providing clear vision for both near and far distances. It is essential for users to have a comprehensive eye examination to determine the appropriate prescription and lens design tailored to their specific visual needs.