What's wrong with blurry eyes?

In daily life, many people have experienced blurry vision. Generally speaking, there are many reasons for blurry vision. One possibility is that the body lacks vitamin A, which leads to liver and kidney deficiency, resulting in blurred vision. Another possibility is that it is caused by chronic conjunctivitis. But no matter which situation causes it, you must not be careless if you have symptoms of blurry vision. Timely treatment is very important.

Vision refers to the ability to distinguish small or distant objects and fine details. A visual acuity below 1.0 is considered impaired vision, and a visual acuity below 0.3 is considered low vision, which manifests as blurred vision. The lesions that cause blurred vision are located in a wide range of areas, so the causes of blurred vision are also varied.

1. Inflammation is the most common cause of blurred vision

(1) Infectious: keratitis, corneal ulcer, iridocyclitis, choroiditis, endophthalmitis, panophthalmitis, orbital cellulitis, etc. caused by bacteria, viruses, chlamydia, fungi, parasites, etc.

(2) Non-infectious: bullous stromal keratitis, uveitis (including iridocyclitis and choroiditis), sympathetic ophthalmia, Harada disease, etc.

2. Refractive error

Myopia, hyperopia, astigmatism, presbyopia.

3. Strabismus and amblyopia

4. Eye injury

Eye perforation, blunt trauma, explosion injury, chemical burns, radiation injury, etc.

5. Glaucoma

6. Sequelae caused by various eye diseases

Corneal scar, pupil occlusion, pupil closure, vitreous opacities.

7. Systemic circulatory disorders, metabolic disorders and genetic diseases

Hypertensive retinopathy, diabetic retinopathy, nephritic retinopathy, pregnancy-induced hypertension retinopathy, hematologic retinopathy, retinitis pigmentosa, macular degeneration, ischemic optic neuropathy, Leber's disease and other fundus lesions, cataracts.

8. Retinal vascular disease and retinal detachment

Retinal artery occlusion, retinal vein occlusion, central cardiac serous chorioretinopathy, retinal vasculitis, retinal detachment, etc.

9. Senile and degenerative diseases

Senile cataracts, corneal degeneration, age-related macular degeneration.

10. Tumors

Intraocular tumors, orbital tumors, or eyelid tumors that invade the eyeball, etc.

11. Others

Visual pathway lesions.

12. Eye fatigue

Unhygienic use of eyes or eye malnutrition, etc.