The First (89/48/EEC) and Second (92/51/EEC) European General Directives on the Mutual Recognition of Professional and Vocational Qualifications allow:
to apply to another EU/EEA Member State (e.g. UK) to have their qualifications recognised for practice in that Member State. The applicant's post qualification practical experience must also be taken into account.
Under the Directives, the General Optical Council (GOC) is what is termed the UK "designated authority" for optics. The role of a designated authority is to consider applications under the Directives. The Council must decide whether there are any significant differences between the applicant's training and education in optics and that which is required of a UK qualified optician (either a dispensing optician or optometrist). Follow this link to the GOC website
for more information on the EU/EEA route to registration as an optometrist or dispensing optician.
Once eligibility for registration as an optometrist is achieved via this route, you may practice, but only when you have registered with the GOC. Once on the register you must renew your registration annually in order to maintain your license to practice.