Blurred vision is one of the most common visual symptoms that prompts patients to seek ophthalmological care. It can develop gradually or suddenly, affect one or both eyes, and be indicative of a minor problem or a more serious ocular or systemic condition.
At Clínica Nivaria , we address blurred vision with a personalized and multidisciplinary approach, seeking not only to improve the patient's visual quality, but also to identify its underlying cause and treat it effectively.
What is blurred vision?
Blurred vision is the loss of sharpness or clarity in vision . People who experience it describe seeing objects as indistinct, out of focus, or as if they are covered by a haze. It can affect distance vision, near vision, or both, depending on the cause.
This symptom can appear in the following ways:
- Gradual , as occurs with uncorrected refractive errors or eye aging.
- Sudden onset , which may be a sign of an ophthalmological emergency, such as a retinal detachment, optic neuritis, or vascular occlusion.
Main causes of blurred vision
Below, we explain the most common causes of blurred vision, differentiating between those of ocular origin and those of systemic or neurological origin.
1. Refractive errors
They are the most frequent cause and are due to an irregular shape of the eye that prevents light from focusing correctly on the retina:
- Myopia : blurred vision at a distance.
- Hyperopia : blurred vision up close (and sometimes at a distance).
- Astigmatism : distortion at all distances.
- Presbyopia : difficulty focusing up close with age (usually from 40-45 years old).
2. Waterfalls
A cataract is the progressive clouding of the lens , the eye's natural lens. It is a common cause of blurred vision in older adults and can be accompanied by glare, difficulty driving at night, and frequent changes in prescription.
3. Dry eye syndrome
Dry eye is a multifactorial condition that affects the stability of the tear film, causing fluctuating or blurred vision, burning, grittiness, or photophobia. It is very common in people who spend many hours in front of screens.
4. Age-related macular degeneration (AMD)
It affects the macula, the central part of the retina responsible for detailed vision. It causes central vision loss, metamorphopsia (seeing distorted lines), and progressive blurred vision. It is one of the leading causes of legal blindness in people over 65.
5. Glaucoma
Glaucoma is a disease of the optic nerve associated with elevated intraocular pressure. It often progresses without symptoms, but in advanced stages it can cause blurred peripheral vision, tunnel vision, or irreversible vision loss.
6. Diabetic retinopathy
Patients with diabetes can develop damage to the blood vessels of the retina, leading to blurred vision, hemorrhages, or even retinal detachment. Proper metabolic control and regular eye exams are essential.
7. Retinal detachment
It is an ophthalmological emergency. It usually begins with flashes of light, floaters, and a shadow in the field of vision , followed by blurred vision. If left untreated, it can cause permanent vision loss.
8. Optic neuritis
Inflammation of the optic nerve, often associated with neurological diseases such as multiple sclerosis. It can cause blurred vision, loss of central vision, and eye pain when moving the eye.
9. Eye infections
Conjunctivitis, keratitis, or uveitis can cause temporary blurred vision along with redness, discharge, or photophobia. Some infections can compromise vision if not treated promptly.
10. Migraines with aura
Some migraines are preceded by visual disturbances (aura), such as blurred vision, flashing lights, or temporary loss of the visual field. These usually resolve within minutes or hours.
When is it urgent to consult an ophthalmologist?
If you experience sudden blurred vision , especially if accompanied by the following symptoms, you should see an ophthalmologist immediately :
- Sudden loss of vision in one or both eyes.
- Intense eye pain.
- Severe photophobia.
- See flashes or moving shadows.
- Double vision.
- Eye trauma.
At Clínica Nivaria , we are prepared to handle ophthalmological emergencies with advanced technology and a highly qualified team.
Diagnosis of blurred vision
The evaluation of blurred vision requires a complete ophthalmological examination which may include:
- Detailed medical history : duration of the symptom, whether it affects one or both eyes, whether it varies during the day, personal or family history.
- Visual acuity : to quantify vision loss.
- Refraction : to detect refractive errors.
- Biomicroscopy : slit-lamp evaluation of the anterior segment of the eye.
- Fundus examination : to analyze the retina, optic nerve and macula.
- Optical coherence tomography (OCT) : detailed study of the retina and optic nerve.
- Visual field testing : to assess the visual field, especially useful in cases of glaucoma or neurological diseases.
Depending on the case, collaboration with other specialties such as neurology, internal medicine, or endocrinology may be required.
Treatment for blurred vision
The treatment will depend directly on the identified cause:
Cause | Treatment |
Refractive errors | Glasses, contact lenses, or refractive surgery (laser, intraocular lenses) |
Waterfalls | Cataract surgery with intraocular lens implant |
Dry eye | Artificial tears, eyelid hygiene, pulsed light treatments, or autologous serum |
AMD | Intravitreal injections, antioxidant supplements (in selected cases) |
Glaucoma | Hypotensive eye drops, laser, or filtering surgery |
Diabetic retinopathy | Glycemic control, laser, injections, or vitrectomy surgery |
Retinal detachment | Urgent surgery |
Optic neuritis | Corticosteroids and neurological monitoring |
Infections | Antibiotics or antivirals depending on the germ |
Migraines | Preventive and symptomatic medication, neurological monitoring |
At Clínica Nivaria, each treatment is personalized after an individual assessment. Our goal is to always offer the safest, most effective option tailored to each patient's needs.
Prevention and tips to take care of your visual health
Although blurred vision cannot always be prevented, there are habits that help maintain good eye health:
- Get regular eye exams , even if you have no symptoms.
- It controls systemic diseases such as diabetes, hypertension, or cholesterol.
- Don't overuse screens : follow the 20-20-20 rule (every 20 minutes, look at something 20 feet away for 20 seconds).
- Hydrate your eyes if you work in dry or air-conditioned environments.
- Use certified sunglasses to protect yourself from UV radiation.
- Do not self-medicate your eyes . If you experience any discomfort, consult a specialist.
Blurred vision: When should you worry?
It's normal to experience blurred vision occasionally, especially after many hours in front of a screen or due to eye strain. However, if the symptom is persistent, recurring, or sudden , it could be a sign of a more serious condition.
At Clínica Nivaria, we recommend that you don't ignore these visual changes. Early detection can make the difference between a simple solution and irreversible vision loss.
Why choose Clínica Nivaria?
At Clínica Nivaria , located in Santa Cruz de Tenerife, we have a team of ophthalmologists specializing in different areas of vision, state-of-the-art diagnostic technology, and a firm commitment to medical and human excellence.
Patients from all the islands trust us because of our comprehensive approach, personal treatment, and high-quality clinical results.
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📍 Nivaria Clinic – Your vision, in the best hands.
