Cataracts are one of the leading causes of vision impairment and blindness worldwide. The condition is most commonly seen in people aged 50 and older as part of the natural aging process. However, cataracts can also occur in younger adults and even children due to various causes. Early detection and timely treatment play a crucial role in preserving vision and improving quality of life.

What Is the Lens of the Eye?

The clouding of the eye’s natural lens prevents light from reaching the retina properly
 

The lens is a transparent structure located behind the iris. Its primary function is to focus light onto the retina, allowing us to see clear and sharp images. The lens also helps the eye adjust its focus when viewing objects at different distances.

A healthy lens is clear and allows light to pass through easily. Over time or due to other factors, the lens may become cloudy, affecting visual clarity.

What Are Cataracts?

A cataract is a condition in which the eye’s natural lens becomes cloudy and loses its transparency. As a result, light cannot pass through the lens normally to reach the retina, causing blurred or hazy vision.

Cataracts usually develop gradually and, if left untreated, can lead to significant vision loss and even blindness.

Causes of Cataracts

Cataracts can develop for a variety of reasons, including:

Natural Aging

This is the most common cause. As people age, proteins within the lens gradually break down and clump together, causing the lens to become cloudy.

Systemic Diseases

Certain chronic health conditions can increase the risk of developing cataracts, including:

• Diabetes mellitus
• Hypertension
• Metabolic disorders
• Obesity

Eye Injuries

Trauma caused by accidents, blunt force injuries, or foreign objects entering the eye can lead to cataract formation either immediately or years later.

Long-Term Medication Use

Prolonged use of corticosteroid medications may increase the risk of cataracts.

Environmental Factors

Frequent exposure to ultraviolet (UV) rays, X-rays, welding light, or other forms of radiation can negatively affect lens health.

Congenital Cataracts

Some children are born with cataracts due to genetic factors or maternal illnesses during pregnancy that affect fetal eye development.

Symptoms of Cataracts

Cataracts usually develop slowly and are typically painless. Common symptoms include:

Blurred Vision

People with cataracts often experience blurred vision, as if looking through a foggy or misty veil

Objects may appear unclear or out of focus, as though viewed through a foggy window or mist.

Glare and Light Sensitivity

The eyes may become more sensitive to bright lights, especially sunlight or headlights when driving at night.

Double Vision

Some individuals may see two images of a single object, even when using only one eye.

Changes in Color Perception

Colors may appear faded, dull, or more yellow than usual.

Gradual Vision Loss

Daily activities such as reading, using a smartphone, driving, or recognizing faces may become increasingly difficult.

If you experience any of these symptoms, it is important to visit an eye care specialist for a comprehensive examination and appropriate treatment recommendations.

Cataract Treatment

In the early stages, doctors may recommend updating eyeglass prescriptions or making lifestyle adjustments to improve vision. However, when cataracts begin to interfere with daily activities, surgery becomes the most effective treatment option.

Phacoemulsification (Phaco) – A Modern Treatment Method

Phacoemulsification (Phaco) is a modern cataract treatment that enables rapid visual recovery and improved quality of vision

Phacoemulsification is a surgical technique that uses ultrasound energy to break up the cloudy lens, which is then removed and replaced with an artificial intraocular lens (IOL).

Benefits of Phaco Surgery

• Short surgical procedure.
• Small incision with minimal discomfort and bleeding.
• Rapid visual recovery.
• Reduced risk of complications.
• Most patients can return home on the same day, following medical advice.

Today, Phaco surgery is considered the gold standard for cataract treatment and is widely performed in modern ophthalmology centers.

Preventing Cataracts

Although the natural aging process cannot be stopped, the risk of cataracts can be reduced by:

• Having regular eye examinations, especially after the age of 50.
• Effectively managing chronic conditions such as diabetes and hypertension.
• Wearing UV-protective sunglasses outdoors.
• Maintaining a healthy diet rich in vitamins and antioxidants.
• Avoiding smoking and limiting alcohol consumption.
• Exercising regularly and maintaining a healthy lifestyle.

When Should You See an Eye Doctor?

Regular eye examinations help detect cataracts and other eye conditions at an early stage

You should seek an eye examination if you experience persistent blurred vision, unusual glare sensitivity, progressive vision loss, or difficulties performing daily activities. Early diagnosis and timely treatment can help preserve vision and prevent complications associated with cataracts.

The Ophthalmology Department at Hoan Hao General Hospital will soon launch cataract screening, consultation, and treatment services using advanced Phacoemulsification technology, helping patients restore clear vision and improve their quality of life.