Progressive lenses are becoming more popular among middle - aged and elderly people. However, for first - time wearers, adapting to them can be a challenge. Progressive lenses have different zones, and using the right zone is key to clear and comfortable vision.
The adaptation period for progressive glasses is usually about 1 - 2 weeks. Wearers need patience and practice to master the usage.
- For long - distance viewing: Define the far - vision range. Look straight ahead with both eyes, not to the side. Start by watching TV indoors.
- For short - distance viewing: Define the near - vision range. Slightly tuck in the chin without lowering the head, and look down. Place a newspaper flat on the table and look down at it to find a clear view.
- For medium - distance viewing: Define the middle - vision range. Look straight ahead and then slowly look down, using the middle transition zone. This zone is for distances like 80cm - 1.5m, such as when using a computer or playing cards.
Avoid using the peripheral zone by turning the head instead, as it may cause visual distortion and dizziness.
- Walking / Going up and down stairs: Use the upper far - vision zone and slightly lower the head to see the ground. When going up or down stairs, lower the head rather than looking down with the eyes. Never use the lower near - vision zone to look at the steps.
- Driving: Use the far - vision zone when looking at the road; lower the eyes slightly to use the middle - lower zone when looking at the dashboard. When looking at the rear - view mirror or the side, turn the head and always use the central far - vision zone.
- Office work / Reading: Adjust the screen height to align with the middle transition zone when using a computer. When reading a phone or a book, avoid excessive head - lowering and use the lower near - vision zone.
- Sports: Avoid strenuous exercise as the peripheral vision distortion may affect balance.
- Adaptation process: Adapt in a calm environment first, then in a dynamic one. Start indoors and then move outdoors.
- Importance of optometry: Precise measurement of pupil height and distance is crucial. Choose a professional institution for fitting.
- Spare glasses: It's advisable to wear single - vision glasses for long - term focus on a specific distance.
- Regular check - ups: Check the prescription annually and adjust the lenses in time.
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