Optician, Optometrist or Ophthalmologist?
Understanding the Differences and Knowing Who to Consult
When it comes to eye care, many people feel confused by the different professionals involved: opticians, optometrists, and ophthalmologists. Their roles sometimes seem to overlap, their titles sound similar, and it is not always clear who to consult for an eye exam, an emergency, or eyewear adjustments. Here, we clarify once and for all the differences between these three experts so you know exactly who does what and when to consult each of them.
The Optician: The Specialist in Eyewear, Visual Comfort, and Adjustments
An optician is an eye care professional specialized in the fabrication, fitting, and optimization of eyewear. Contrary to what some people believe, their role goes far beyond simply selling frames.
✔ Main Responsibilities
Interpreting Prescriptions Issued by an Optometrist or Ophthalmologist
The optician analyzes the prescription, selects the appropriate lens technology, and helps you understand what you truly need (thinner lenses, anti-reflective coatings, progressive lenses, specialty filters, etc.).
Recommending Frames Adapted to Your Face and Prescription
They evaluate:
- the shape of your face,
- pupillary distance,
- nose structure,
- temple width,
- lifestyle habits,
- and frame-to-lens compatibility.
Performing Precise Adjustments
A proper adjustment changes everything: comfort, vision, stability, posture, and more.
The optician adjusts the temples, lens angle, height, and fit on the nose.
Advising on Lens Treatments
Anti-reflective coatings, blue-light filters, sunglasses, polarized lenses, transition lenses…
They explain the benefits and limitations of each option.
Performing Repairs and Maintenance
Frame straightening, screw tightening, post-purchase adjustments, cleaning, and polishing.
✔ What an Optician Does NOT Do
- They do not perform eye exams.
- They do not diagnose eye diseases.
- They do not prescribe medication or medical treatments.
In summary, the optician is the expert in everyday visual comfort, eyewear selection, and glasses fitting.
The Optometrist: The Professional for Eye Exams and Primary Eye Care
The optometrist is the first professional people consult when they want to check their vision or obtain a prescription.
✔ Main Responsibilities
Performing Comprehensive Eye Exams
They evaluate:
- distance and near vision,
- focusing ability,
- eye coordination,
- astigmatism,
- presbyopia,
- and the general health of the eye (retina, cornea, lens).
Detecting Eye Diseases
Such as:
- cataracts,
- glaucoma,
- macular degeneration (AMD),
- eye infections,
- severe dry eye,
- corneal abnormalities.
Prescribing Glasses and Contact Lenses
The optometrist determines the exact prescription and recommends the best visual solution based on your needs.
Treating Certain Eye Conditions
As a primary care professional, they may treat:
- dry eye,
- conjunctivitis,
- eye allergies,
- mild inflammation,
- superficial injuries.
Referring Patients to an Ophthalmologist When Necessary
If surgery, advanced treatment, or complex disease management is required, the optometrist refers the patient to an ophthalmologist.
✔ What an Optometrist Does NOT Do
- They do not perform surgeries.
- They do not treat advanced eye diseases.
- They do not perform laser or medical surgery.
In summary, the optometrist is the expert in eye exams, primary diagnosis, and personalized vision solutions.
The Ophthalmologist: The Medical Eye Specialist and Surgeon
An ophthalmologist is a medical doctor (MD) who has completed several years of specialized training in ophthalmology. They treat complex eye diseases and perform surgical procedures.
✔ Main Responsibilities
Diagnosing and Treating Confirmed Eye Diseases
They are responsible for managing conditions such as:
- glaucoma,
- cataracts,
- AMD,
- diabetic retinopathy,
- uveitis,
- keratoconus,
- severe infections.
Performing Surgeries
For example:
- cataract surgery,
- glaucoma surgery,
- refractive surgery (LASIK, PRK),
- corneal transplants,
- traumatic eye repairs.
Prescribing Specialized Medications
Steroid eye drops, strong antibiotics, immunological treatments, intravitreal injections, etc.
Monitoring Chronic Eye Conditions
Many patients with eye diseases require ongoing follow-up care.
✔ What an Ophthalmologist Generally Does NOT Do
- They do not adjust eyeglasses.
- They do not usually perform routine eye exams (except in special cases).
- They do not select frames or lens treatments.
In summary, the ophthalmologist is the expert in advanced eye medicine and surgery.
Who Should You Consult? (A Simple and Clear Guide)
Here is the summary everyone should know:
⭐ You should consult an optician if:
- your glasses give you headaches,
- your glasses slide, pinch, or cause discomfort,
- you want advice choosing frames,
- you need an adjustment or repair,
- you want to optimize the quality of your lenses.
⭐ You should consult an optometrist if:
- your vision changes,
- you need an eye exam,
- your eyes sting, burn, or water,
- you think you may have an infection or dry eye,
- you want contact lenses,
- you experience vision-related headaches,
- your vision becomes blurry, double, or weaker than before.
⭐ You should consult an ophthalmologist if:
- you have a diagnosed eye disease,
- you require surgery,
- you experience significant vision loss,
- you see flashes, shadows, or a dark curtain,
- you have a serious or traumatic eye emergency.
A Complementary Trio Serving Your Vision
Throughout a patient’s eye care journey, all three professionals may play a role. However, in an optical store, you will generally only encounter the optician and the optometrist. The ophthalmologist works primarily in medical clinics or hospitals when advanced diagnosis or medical intervention is necessary. The optometrist performs the eye exam and disease screening. The optician then takes over to optimize your prescription and ensure your everyday comfort. If a more serious eye condition is suspected, the optometrist will refer you to an ophthalmologist. This distinction is important because each professional plays a complementary role, but not in the same practice setting.
Conclusion: Three Professionals, Three Complementary Areas of Expertise
Understanding who does what helps avoid confusion, saves time, and allows you to make better decisions for your eye health.
- The optician: the expert in eyewear, adjustments, visual comfort, and optical advice.
- The optometrist: the specialist in eye exams, eye disease screening, and primary eye care — also working in optical clinics.
- The ophthalmologist: the medical specialist and eye surgeon, consulted in medical clinics or hospitals when advanced treatment is required.
Knowing who to consult at the right time is key to protecting your vision long term.
At Les Branchés Lunetterie, our team is here to support you through every step of your visual health journey — whether you need help choosing glasses suited to your lifestyle, personalized advice, or a comprehensive eye exam with an optometrist.
Visit us in-store and let us help you find the perfect solution for your eyes… and your style.