The Drug Tariff only lists the five eye drop dispensers below:
ComplEye, EyGuide, Opticare, Opticare Arthro 5, Opticare Arthro 10  

Other products cannot be prescribed on NHS FP10 prescriptions. Eye drop dispensers are classed as medical appliances and therefore must be included in Part IXA of the Drug Tariff to be allowable on an NHS prescription. Other eye drops dispensers are available, but cannot be prescribed on NHS prescriptions. When recommending eye drop dispensers it is important to ensure that the eye drops and the eye drop dispenser are compatible. They are particularly useful for the elderly, visually impaired, arthritic, or otherwise physically limited patients.

See BNF for general guide on administration of drugs to the eye
https://bnf.nice.org.uk/treatment-summaries/eye/