What does [ADD] in contact lenses mean?

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What does [ADD] in contact lenses mean?

The [ADD] number is required when ordering multifocal/bifocal contact lenses for presbyopia.
The figure determines the amount of correction you need to be able to see clearly at a close distance. The Addition figure is a positive number between +0.50 and +3.00, which some contact lens brands refer to as a high, medium or low.
Find out more about Multifocal Contact Lenses.

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  • You will earn 1 point for every $5 you purchase.
  • When you write your review for your purchased product, you will receive 10 points (one review per product only).
  • 1 Point will be worth $0.10 (eg 100 points＝$10).
  • The point will be calculated for the total amount of your order (including the Shipping fee).
  • If you use a coupon code, the point will be calculated for the total amount after using the coupon (discounted amount).
  • Points will be added after your payment is confirmed. You can use the points for your next purchase.
  • There is no expiry date for your points.
  • There is no minimum point spent when you use your points.
  • You can not redeem your points toward the Shipping fee.
  • If you cancel your order, your points will be deducted from the refunded amount.
  • You can see your points balance on "My Points".
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