Many people don't know whether to see an ophthalmologist, an optometrist, or an oculist when they have vision problems. Although the three terms are related to eye care, each one serves a different role.
In this article, we will explain what each specialist does, their differences, and when it is advisable to consult each one.
1. What is an ophthalmologist and what do they do? What is an ophthalmologist and what do they do?

An ophthalmologist is a doctor specialized in the diagnosis, treatment, and prevention of eye diseases. Their academic training includes studies in general medicine and a specialization in ophthalmology, which allows them to treat complex conditions and even perform surgeries.
Main duties of an ophthalmologist
- Diagnose and treat diseases such as cataracts, glaucoma, and conjunctivitis.
- Prescribe medications and perform medical or surgical procedures on the eyes.
- Perform corrective surgeries such as laser surgery for myopia or corneal transplant.
- Evaluate ocular health in people with systemic diseases such as diabetes or hypertension.
When to see an ophthalmologist?
A consultation is recommended if symptoms such as:
- Sudden or progressive vision loss.
- Eye pain, inflammation, or extreme sensitivity to light.
- Flashes of light or spots in the visual field.
- Diagnosis of an eye disease that requires treatment or surgery.
2. What is an optometrist and what is their role? What is an optometrist and what is their role?
An optometrist is a visual health professional specialized in the evaluation and correction of refractive problems, such as myopia, hyperopia, and astigmatism. Unlike an ophthalmologist, the optometrist is not a doctor, but is trained to perform visual exams and prescribe glasses or contact lenses.
Main duties of an optometrist
- Perform visual exams to detect refractive problems.
- Prescribe and fit contact lenses and glasses.
- Detect vision abnormalities and refer to an ophthalmologist if necessary.
- Provide visual therapy in certain cases, such as focus or eye coordination problems.
¿Cuándo acudir a un optometrista?
- When a visual exam is needed to get glasses or contact lenses.
- In case of visual fatigue, difficulty focusing, or frequent headaches while reading.
- If there is a noticeable deterioration in vision and a new prescription is required.
While the optometrist can detect vision problems, in the case of eye diseases, they must refer the patient to an ophthalmologist.
3. What is an ophthalmologist? What is an oculist? Is it the same as an ophthalmologist?
The term "oculist" is commonly used as a synonym for ophthalmologist, but in some countries, it is colloquially used to refer to any visual health professional, including optometrists.
Diferencias clave
- Ophthalmologist: Doctor specialized in the treatment of eye diseases and surgery.
- Optometrist: Professional who focuses on visual correction with glasses or contact lenses.
- Ophthalmologist: Colloquial term that can refer to any of the above.
If a medical diagnosis or surgery is needed, it is best to see an ophthalmologist. If you only need a visual assessment to correct your prescription, you can go to an optometrist.
4. Who should I turn to regarding my vision problem?
To make it easier to choose the right specialist, here is a practical guide:
| Symptom or need | Recommended specialist |
|---|---|
| Blurred vision, visual fatigue | Optometrist |
| Need for glasses or contact lenses | Optometrist |
| Eye pain or eye pressure | Ophthalmologist |
| Diagnosis and treatment of diseases | Ophthalmologist |
| Eye surgery or advanced procedures | Ophthalmologist |
| General consultation for visual review | Optometrista u oftalmólogo |
For example, if you need to renew your glasses, an optometrist can help. But if there is eye pain, double vision, or vision loss, it is advisable to see an ophthalmologist.
5. Conclusión
Understanding the differences between an ophthalmologist, an optometrist, and an oculist is key to seeing the right specialist according to each need.
- The ophthalmologist is a doctor who diagnoses and treats eye diseases, in addition to performing surgeries.
- The optometrist is responsible for evaluating vision and prescribing corrective lenses.
- The oculist is a colloquial term that is sometimes used to refer to the ophthalmologist or the optometrist.
If there are concerning symptoms or a professional evaluation is needed, it is advisable to consult an ophthalmologist to receive an accurate diagnosis and ensure proper eye care.


