What causes blurred vision and how to treat it

Sep 13, 2024 Source: Cainiu Health

Dr. Wang Shuai

Introduction

Blurry vision may be caused by eye strain, bright light irritation, refractive errors, presbyopia, glaucoma, or other reasons. To prevent blurry vision, we should avoid staring at screens for prolonged periods in daily life, ensure adequate rest and relaxation for the eyes, avoid extended exposure to bright light, wear appropriate protective eyewear, take care to protect our eyes, and have regular vision checkups.

Under normal circumstances, blurred vision may be caused by eye strain, strong light exposure, refractive errors, presbyopia, glaucoma, or other conditions. If discomfort occurs, timely medical consultation is recommended. Specific analyses are as follows:

1. Eye Strain

Prolonged focus on screens such as computers or smartphones, or reading in poorly lit environments, can lead to eye fatigue. This may reduce the eye's ability to adjust focus, making it difficult to clearly see objects at near or far distances, resulting in blurred vision. Taking regular breaks during visual tasks can help relieve eye strain.

2. Strong Light Exposure

Extended exposure to intense light, such as staring directly at sunlight or reflected light from snow, can irritate the eyes. Strong light causes the pupils to constrict to reduce light entry, but prolonged constriction may disrupt the eye’s focusing mechanism, leading to blurred vision. Avoiding strong light exposure and wearing protective eyewear outdoors can help prevent this.

3. Refractive Errors

Abnormalities in the cornea or lens of the eye can prevent light from forming a clear image on the retina, making it difficult to focus clearly on distant or nearby objects and causing blurred vision. This condition may also be accompanied by symptoms such as eye fatigue and headaches. It is recommended to follow medical advice and use medications such as atropine sulfate eye drops, compound tropicamide eye drops, or Mingmu Dihuang Pills as adjunctive treatments.

4. Presbyopia

With aging, the eye's ability to adjust focus gradually declines, making it difficult to clearly see close objects. Presbyopia causes blurriness when viewing near objects, leading to symptoms such as blurred vision and eye fatigue. Under a doctor’s guidance, medications such as Qiju Dihuang Pills, Shihu Yeguang Pills, or vitamin A softgels may be used as supportive treatments.

5. Glaucoma

Glaucoma is a condition in which elevated intraocular pressure damages the optic nerve. This damage affects vision and may cause blurred vision, often accompanied by decreased vision and eye pain. Treatment should follow medical recommendations and may include medications such as timolol maleate eye drops, pilocarpine nitrate eye drops, or acetazolamide tablets.

In daily life, ensure adequate rest and relaxation for the eyes, avoid prolonged exposure to strong light, take measures to protect your eyes, and have regular vision check-ups.

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Can people with pinguecula receive vaccines?

Whether patients with pinguecula can receive vaccines depends on their ocular condition and the type of vaccine. Vaccination can proceed normally if the pinguecula is not inflamed and the vaccine does not have ocular contraindications. However, if the pinguecula is in an acute inflammatory phase, vaccination should be postponed. Patients should monitor their eye condition before and after vaccination, avoid rubbing their eyes, maintain good ocular hygiene, and minimize exposure to irritants such as dust and ultraviolet light.