HEALTH ARTICLE

Understanding Cataract’s Causes, Symptoms, Treatment and Prevention

บทความโดย: วันที่อัพเดท: 14 May 2569

Cataract

The development of a cataract is one of the most common yet significant challenges to our sight as we age. It is a condition that can slowly dim the vibrancy of your daily experiences if left unaddressed. We are here to guide you through every step of understanding, preventing, and treating this condition with the warmth and expertise you deserve.


Highlight

  • Cataracts, a common age-related condition, cause the eye's natural lens to become cloudy, diminishing vision.
  • Risk factors of cataracts include aging, diabetes, UV exposure, smoking, and long-term steroid use.
  • The only definitive treatment is surgery, such as Phacoemulsification, which replaces the cloudy lens with a clear Intraocular Lens (IOL).
  • Cataract prevention involves wearing UV-blocking sunglasses, maintaining a healthy diet, and managing underlying health conditions.
  • Timely consultation and treatment at Samitivej Chinatown can restore clarity and significantly improve your quality of life.

Table of Contents


What is Cataract? 

A cataract is a common eye condition characterized by the clouding of the eye's natural lens, which is normally clear to allow light to pass through to the retina. This clouding occurs because the protein structures within the lens begin to change and clump together, causing the lens to become hard and opaque rather than remaining flexible and transparent. 

A cataract typically develops slowly over several years and is a leading cause of vision impairment among older adults, often affecting both eyes, though the severity may differ between them.


What Are the Causes of Cataract?

The most prevalent cause of a cataract is simply the natural aging process, with the condition most frequently appearing in individuals aged 50 to 60 and older.

Beyond age, several health factors can increase your risk of developing a cataract such as:

  • Type 2 diabetes
  • High blood pressure
  • Thyroid issues
  • Obesity
  • Family history of cataracts
  • Previous eye injuries and surgeries

External factors and lifestyle choices also play a significant role in the acceleration of lens clouding:

  • Prolonged exposure to intense ultraviolet (UV) light from the sun without protective eyewear
  • Exposure to bright light from welding
  • Excessive mobile phone use at night
  • Habitual smoking
  • Heavy alcohol consumption
  • Long-term use of certain medications, particularly steroids

What Are the Symptoms of Cataract?

symptoms of cataract

Recognizing the symptoms of a cataract early is essential for timely treatment, although the signs often develop so gradually that they might go unnoticed at first. 

  • Blurred or cloudy vision (feeling like a permanent fog).
  • Difficulty seeing in low-light conditions (e.g., at night).
  • Colors appearing faded or yellowish (especially shades of blue).
  • "Halos" or glowing rings around bright lights.
  • Eyes becoming uncomfortably sensitive to glare (from the sun or oncoming headlights).
  • Double vision in a single eye (as the condition progresses).
  • Need to change glasses prescription more frequently than usual (as the condition progresses).
  • Almost entirely opaque lens, significantly hindering daily activities like reading or watching television (mature cataract stage).

Treatment for Cataracts

Surgery

  • Extracapsular Cataract Extraction

Extracapsular Cataract Extraction is a traditional method which involves a slightly larger incision (about 6 to 10 mm) to remove the hardened center of the lens in one piece. This technique is often reserved for very advanced or "ripe" cataracts where the lens has become too hard for other methods. While it is highly effective, it generally requires a longer recovery period and stitches. 

  • Phacoemulsification

Phacoemulsification, or phaco is the most modern and widely used technique today. which uses ultrasound waves to break the cloudy lens into tiny fragments that are then gently vacuumed out through a much smaller incision of only about 3 mm. This cataract surgery is known for its rapid recovery time, often requiring only a week of rest before resuming normal activities.

During these surgeries, the surgeon inserts IOLs (Intraocular Lenses), which are permanent artificial lenses designed to stay in your eye for life. These lenses can be customized to correct other vision issues you may have, such as nearsightedness, farsightedness, or astigmatism. 

Non Surgery

In the very early stages of a cataract, surgery may not be immediately necessary if the symptoms are mild and do not significantly impact your daily routines. 

  • Use stronger prescription glasses or bifocals, especially for reading.
  • Increase the brightness of lighting in your home and workspace to improve clarity and reduce eye strain.
  • Regular check-ups are essential so that your specialist can advise you on the optimal time for surgery before the lens becomes too hard or complications arise.

These measures help maintain independence while your eye doctor monitors the condition.


How to Prevent Cataracts?

Cataract Preventions

While aging is inevitable, you can slow cataract progression and protect eye health through lifestyle choices.

  • Wear high-quality, UV-blocking sunglasses outdoors.
  • Maintain a healthy diet rich in Vitamins A, C, and E, prioritizing whole foods over supplements.
  • Make positive lifestyle changes, such as quitting smoking and reducing alcohol.
  • Manage underlying conditions like diabetes or high blood pressure.
  • Exercise caution with certain medications, especially steroids, and always consult a doctor before using long-term eye drops.
  • Schedule regular annual eye examinations for early detection and timely care of cataracts and other eye conditions.

Conclusion

Your vision is a precious gift that allows you to experience the beauty of the world and connect with those around you. Understanding that a cataract is a manageable part of life's journey can take away the fear and empower you to seek the care you need. 

At Samitivej Chinatown, we are dedicated to providing a warm, friendly environment where your health is our priority. Whether you are in the early stages of cataract or require advanced surgical intervention, we are here to support you with a neighborly care approach that makes every visit comfortable and reassuring. Don't let cloudy vision hold you back. Reach out to us today and let's work together to bring clarity back to your life.

Contact Samitivej Chinatown:

  • Line: @samitivejchinatown
  • Tel: 02-118-7893 (Available 24 hours)

Frequently Asked Questions (FAQs)

How do cataracts affect your life?

Cataracts gradually diminish your quality of life, making everyday tasks difficult and potentially dangerous. Clouded vision impairs activities like reading, cooking, recognizing faces and driving at night. It could eventually lead to sight loss without a proper treatment. 

When to see a doctor?

Consult an optician or eye specialist for vision changes like persistent blurring, difficulty with low light, or reduced effectiveness of current glasses. Prompt professional advice is especially important if vision impacts daily activities or causes discomfort in bright light. 

Early consultation is crucial for timely monitoring and effective treatment, preventing the cataract from progressing to a harder-to-treat stage.

How do I know if I have cataracts?

The most accurate cataract diagnosis requires a comprehensive eye exam, as early cataract symptoms are often subtle. Suspect a cataract if vision seems foggy or dirty, you see double, colors appear dull, your prescription changes often, you need brighter reading light, or you see halos around lights at night. These signs strongly indicate a need for an eye check.