There are 10 optical voucher values. The value of a voucher ranges from £42.40 to £233.56, depending on the strength of the lenses you need.

If, for clinical reasons, you need tints or prisms in your glasses, the value of the voucher will be higher to reflect this.

If you receive an NHS optical voucher, you're free to take it to any supplier of your choice, provided they accept NHS optical vouchers. They'll ask you to show proof of your entitlement to optical vouchers.

If your glasses or contact lenses cost more than the value of your voucher, you'll have to pay the difference.

Some vouchers cannot be issued if there is no change to your prescription and your current glasses are in good condition.