Voltaren Ophtha Eye Drops (Single dose units). Voltaren Ophtha Eye Drops (Single dose units) is a brand of medicine containing the active ingredients diclofenac sodium (eye medicines-decongestants, anaesthetics and anti-inflammatories (topical)) .Find out more about active ingredients.oltaren Ophtha Eye Drops (Single dose units). Voltaren Ophtha Eye Drops (Single dose units) is a brand of medicine containing the active ingredients diclofenac sodium (eye medicines-decongestants, anaesthetics and anti-inflammatories (topical)) . Find out more about active ingredients.