Safety Glasses Process Flow Email firstname.lastname@example.org to request your safety glasses voucher specifying whether you need bifocals. HR Services will send you the appropriate e-vouchers via email or hard copy if requested. This will include an eye test voucher if you have not requested one in the last 6 months. Go into any Specsavers branch to use your voucherswww.specsavers.co.uk We recommend that you have a new eye test if your prescription is more than 6 months old so that your safety glasses are correct. You will be able to select a free pair of glasses from the Specsavers safety eyewear range.