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Understanding Posterior Subcapsular Cataract

In the realm of eye health, understanding the nuances of various conditions is vital. One such condition that demands attention is the Posterior Subcapsular Cataract. This type of cataract primarily affects the posterior or back portion of the crystalline lens, leading to a significant reduction in vision. Let’s delve deeper into this topic to equip you with comprehensive knowledge about this condition.

Symptoms of Posterior Subcapsular Cataract

Posterior Subcapsular Cataract develops at a faster pace compared to other types of cataracts. Hence, being vigilant about the symptoms is crucial. Here are the common symptoms you might encounter:

  • Blurred vision that reduces visual clarity
  • Experiencing glare and halos, particularly when exposed to bright lights such as headlights at night
  • Defective near vision, affecting your ability to see objects up close
  • Instances of diplopia or polyopia in certain cases
  • A noticeable reduction in contrast sensitivity

Unveiling the Causes of Posterior Subcapsular Cataract

Before considering treatment options, understanding the underlying causes is essential. This not only guides effective treatment but also aids in preventing the onset of such cataracts in the future. The common causes include:

  • Ageing, which is a natural process that can affect eye health
  • Long-term exposure to steroid medications
  • Experiencing blunt trauma to the eye
  • Intraocular inflammation, a condition that affects the internal structures of the eye
  • Uncontrolled diabetes, which can have several repercussions on eye health
  • Skin disorders, including conditions like atopic dermatitis

Risk Factors Associated with Posterior Subcapsular Cataract

Certain risk factors can increase the likelihood of developing this type of cataract. These include:

  • Diabetes, especially in individuals with allergic disorders necessitating steroid use
  • Atopic dermatitis, a type of skin condition
  • Asthma, a respiratory condition that can have implications on eye health
  • Autoimmune disorders, where the body’s immune system attacks its own tissues

Strategies for Posterior Subcapsular Cataract Prevention

While it is not possible to completely prevent the onset of cataracts, certain strategies can help in reducing the risk. These include:

  • Avoiding the long-term use of steroids
  • Maintaining strict control over blood sugar levels
  • Taking measures to protect the eye from blunt ocular trauma

Grading of Posterior Subcapsular Cataract

At present, the prevention of cataracts is not feasible. However, advancements in technology have facilitated the restoration of vision through surgery. The World Health Organisation (WHO) has simplified the grading process to encourage studies by ophthalmologists. In the case of Posterior Subcapsular Cataract, the grading is done based on the vertical diameter of the most clearly visible opacities with distinct borders.

Diagnosis and Treatment of Posterior Subcapsular Cataract

The diagnosis of this condition is best conducted through a slit-lamp examination. Additionally, an ophthalmoscopic examination can also be utilized for diagnosis.

When it comes to treatment, surgery remains the primary option. Phacoemulsification surgery is commonly used, wherein an ultrasonic probe breaks the cataract and removes the lens material through a small incision. Following this, a foldable intraocular lens is implanted inside the eye. In very early cases, spectacles may provide some relief, albeit to a limited extent.