What Causes Dry Eyes and Blurred Vision?
Jul 07, 2026
Source: Cainiu Health
Dr. Li Feng
Introduction
In general, dry eyes and blurred vision may result from prolonged eye strain, dry environmental conditions, dry eye syndrome, conjunctivitis, or refractive errors. If you experience discomfort, it is advisable to seek timely medical evaluation and treatment at a reputable hospital. In daily life, adopt scientifically sound eye-care habits—avoid prolonged near-vision tasks and maintain a clean, adequately humidified living environment.
Generally, dry eyes and blurred vision may result from prolonged eye strain, dry environmental conditions, dry eye syndrome, conjunctivitis, or cataracts. If you experience discomfort, it is advisable to seek timely evaluation and treatment at a reputable hospital. A detailed analysis follows:
1. Prolonged Eye Strain
Extended screen time (e.g., computers, smartphones) or reading reduces blink frequency, accelerates tear evaporation, and causes sustained ciliary muscle spasm—leading to dryness and blurred vision. To alleviate symptoms: take regular breaks to gaze into the distance, consciously blink more frequently, limit continuous near-work duration, and perform daily eye exercises.
2. Dry Environmental Conditions
Spending prolonged periods in air-conditioned rooms or windy, dusty environments accelerates tear film loss from the ocular surface, depriving the eyeball of adequate moisture and resulting in dryness and transient blurring of vision. Use a humidifier to improve ambient humidity; wear wind-protective eyewear outdoors; and avoid direct exposure to cold drafts.
3. Dry Eye Syndrome
Inadequate tear production or abnormal tear composition reduces ocular surface lubrication, causing persistent dryness and blurred vision—often more pronounced upon waking. Under medical guidance, topical treatments such as sodium hyaluronate eye drops, polyethylene glycol eye drops, or sodium carboxymethylcellulose eye drops may be prescribed.
4. Bacterial Conjunctivitis
Bacterial invasion of the conjunctiva triggers inflammation, leading to conjunctival hyperemia and edema. Excessive discharge obstructs vision while simultaneously disrupting tear film homeostasis, thereby inducing dryness and blurriness. Antibiotic eye drops—including levofloxacin, tobramycin, or chloramphenicol—may be prescribed per physician instructions.
5. Cataracts
Lens opacification alters light refraction, progressively impairing visual clarity. Additionally, lens clouding interferes with intraocular metabolic processes, indirectly contributing to ocular dryness. In early stages, medications such as pirenoxine eye drops, glutathione eye drops, or Shizhu Mingmu eye drops may be used under medical supervision. Advanced cases require surgical intervention—phacoemulsification combined with intraocular lens implantation.
In daily life, adopt scientifically sound eye-use habits, maintain ocular hygiene, avoid extended exposure to dry environments, and promptly undergo ophthalmologic evaluation if ocular discomfort persists—enabling targeted management of underlying ocular pathology.
