The charity, whose annual income is £10.5m, has not actively recruited any donors for five years. It currently relies on legacies for 75 per cent of income.
Sally Cornish, interim head of fundraising and communications at the organisation, said the charity would be focusing on direct marketing, major donors and trust fundraising in order to diversify.
"We will be seeking to replace the donors we have lost over recent years," she said.
The charity will begin advertising the posts, which are for positions ranging from assistant fundraising director to more junior positions, next month.
St Dunstan's was formed in 1915 and now has about 300 staff in total. It changed its policy seven years ago - it now offers services not onlyto those blinded in action, but also to ex-service personnel who lose their sight at any time.