The optician held credentials meetings with a number of undisclosed agencies this week.
DFGW has held the business since January 2002, when it took the account from Lowe without a pitch.
Last year, D&A spent £2.8 million above the line and £5.6 million below the line.
Its presence has been dwarfed by its Specsavers rival, which spent £21 million above the line in the same period.
Alison Portes, D&A's marketing director, denied she was holding a pitch for the business, adding that the company had no intention of changing its ad agency this year.