If you want to claim a refund, ask the person who supplies your glasses or contact lenses for a receipt. This receipt must show how much you paid and the date of payment. If you're claiming because of low income, use form HC5 available from Jobcentre Plus offices, NHS hospitals, or your optician may have one.
Complete the HC5 form and send it off, making sure you enclose your optical prescription and your receipt. The form tells you what to do. The maximum refund you get back will be the voucher value that matches your prescription.
If you've already used a voucher towards the cost of your glasses or contact lenses you can't get a refund, unless it was only a “complex lens” voucher. You can't claim for a refund of the difference between the voucher value and the actual cost of your glasses or lenses, even if they cost more than the voucher value.
If you want to claim for a reason other than low income, you'll need to send Practitioner Services a letter, enclosing your receipt.
How to contact Practitioner Services
Lost or damaged glasses or contact lenses
If your glasses or contact lenses have been lost or damaged and you pay for replacement or repairs, you'll only be considered for a refund if the loss or damage was due to illness or disability.