The eye normally contains a specific and essential amount of fluid to maintain its function. However, excessive fluid accumulation can signal serious eye conditions and affect vision if not treated early. Fluid in the eye supplies oxygen, nutrients, and removes waste. When the drainage system malfunctions or blood vessels in the eye are damaged, fluid can leak or accumulate abnormally, indicating underlying health issues.

Several conditions can cause fluid to accumulate in the eye:

Macular edema leads to fluid buildup in the macula, the central retinal area responsible for detailed vision. This often stems from damaged and leaking retinal blood vessels. Patients may experience blurred vision or see distorted, wavy images in their central vision.

Diabetic retinopathy, a complication of diabetes, damages small retinal blood vessels, causing fluid or blood to leak into the eye. Patients may experience blurred vision, double vision, and vision impairment if blood sugar is not well controlled.

Central serous retinopathy is a condition where fluid accumulates under the retina due to leaking blood vessels. Individuals affected may experience blurred vision, distorted images, or perceive straight lines as curved.

Glaucoma occurs when the eye's drainage system is blocked or the eye produces too much fluid, leading to increased intraocular pressure. Over time, this pressure can damage the optic nerve, resulting in vision loss. Some cases progress silently in their early stages, making regular check-ups vital.

Choroidal effusion involves fluid accumulation between the choroid – the vascular layer above the retina – and the sclera, the outer white layer of the eyeball. This can be a complication after various eye surgeries, particularly glaucoma surgery. It can also result from injury or eye inflammation. While some individuals remain asymptomatic, others may experience vision loss, severe eye pain, nausea, or vomiting. Severe cases can lead to retinal detachment, which occurs when the retina separates from the underlying supportive tissue. Retinal detachment requires early treatment to prevent blindness.

A retinal tear happens when the vitreous (the gel-like substance behind the eye) abnormally pulls on the retina, causing it to tear. Fluid can then pass through the tear, causing further damage or leading to retinal detachment. Signs of a retinal tear include sudden flashes of light, floaters, shadowy areas in peripheral vision, and a sensation of a curtain-like shadow obscuring part of the vision. Age is the greatest risk factor for this condition.

Experts recommend eye exams when symptoms such as persistent blurred vision, eye pain, red eyes, swollen eyelids, continuous tearing, or sudden vision changes appear. Fluid retention in the eye can sometimes stem from lack of sleep, high sodium intake, or allergies and may improve on its own. However, if symptoms persist or are accompanied by pain or vision loss, a specialist examination is necessary to rule out serious conditions. Treatment depends on the cause of fluid accumulation. Doctors may prescribe eye drops, anti-inflammatory medication, intraocular injections, laser, or surgery in severe cases. Early detection helps reduce the risk of permanent vision damage.

Bao Bao (According to Verywell Health)