Cataract Surgery

  Introduction Clear vision is essential for reading, driving, recognising faces, and carrying out everyday activities. However, as people age, the natural lens inside the eye can become cloudy, leading to a condition known as a cataract. Cataracts may cause blurred vision, glare from bright lights, difficulty seeing at night, and faded colours. If left untreated, they can significantly affect a person’s quality of life. Cataract surgery is a common eye procedure in which the cloudy natural lens is removed and usually replaced with an artificial intraocular lens (IOL). Modern surgical techniques can help restore clearer vision and improve daily functioning. Understanding the cataract surgery procedure, available lens options, benefits, possible risks, recovery time, and cost can help patients make informed decisions about their eye health. People seeking eye care at Brij Lal Hospital can consult an eye specialist to understand their condition and explore suitable treatment options. What Is a Cataract? A cataract develops when the natural lens inside the eye becomes cloudy. The lens normally focuses light onto the retina, allowing the brain to form clear images. When the lens becomes cloudy, light cannot pass through it properly, resulting in reduced or blurred vision. Cataracts most commonly develop with age, but they can also occur because of eye injuries, certain medical conditions, long-term use of particular medicines, or previous eye surgery. In some cases, cataracts may be present from birth. Common types of cataracts include: Nuclear cataracts: Develop in the central part of the lens and are commonly associated with ageing. Cortical cataracts: Begin around the outer edges of the lens and may cause glare. Posterior subcapsular cataracts: Develop near the back of the lens and may affect reading vision and sensitivity to bright light. Congenital cataracts: Present at birth or develop during childhood. The symptoms and progression vary from person to person. An eye examination is necessary to determine whether a cataract is responsible for vision problems.   Cataract symptoms often develop gradually, so some people may not notice significant changes during the early stages. 1. Blurred or Cloudy Vision One of the most common symptoms is vision that appears foggy, hazy, or unclear. Reading, watching television, and recognising faces may become more difficult. 2. Difficulty Seeing at Night Cataracts can reduce visibility in low-light conditions. Driving at night may become more challenging, particularly when approaching headlights create glare. 3. Sensitivity to Bright Light Bright sunlight, vehicle headlights, and indoor lighting may cause discomfort or glare. 4. Faded Colours Colours may appear dull, yellowish, or less vibrant than before. 5. Frequent Changes in Glasses Prescription Some people experience changes in their glasses prescription as cataracts progress. New glasses may help temporarily, but they cannot remove the cataract. 6. Double Vision in One Eye A cataract may occasionally cause double or ghosted images in the affected eye. If you experience sudden vision loss, severe eye pain, flashes of light, or a sudden increase in floaters, seek urgent eye assessment. These symptoms should not automatically be attributed to cataracts. What Causes Cataracts? Ageing is the most common cause of cataracts, but several other factors can contribute to their development. These include: Increasing age. Diabetes and certain other medical conditions. Previous eye injuries or inflammation. Long-term use of corticosteroid medicines. Excessive exposure to ultraviolet radiation over time. Smoking. Previous eye surgery. Genetic factors and congenital conditions. Not everyone with these risk factors will develop cataracts. Regular eye examinations can help identify lens changes and other conditions that may affect vision. When Is Cataract Surgery Necessary? Cataract surgery is generally recommended when the cloudy lens begins to interfere significantly with everyday activities and the expected benefits of surgery outweigh the risks. An eye specialist may recommend surgery if cataracts make it difficult to: Read books, documents, or mobile phone screens. Drive safely, especially at night. Recognise faces or watch television. Work or perform household activities. Manage routine tasks independently. Surgery is not always necessary immediately after a cataract is diagnosed. The decision depends on the degree of visual impairment, the patient’s needs, the health of the retina and other eye structures, and the results of the eye examination. Cataract Surgery Procedure Modern cataract surgery is usually performed as a short procedure, often under local anaesthesia using eye drops or an injection around the eye. The exact technique depends on the patient’s condition and the surgeon’s assessment. Step 1: Pre-Surgery Eye Examination The eye specialist checks visual acuity, examines the lens, measures eye pressure when appropriate, and evaluates the retina and other eye structures. Measurements of the eye are also taken to calculate the appropriate power of the artificial intraocular lens. Step 2: Anaesthesia and Preparation The eye is cleaned and prepared for surgery. Anaesthetic drops or another appropriate anaesthetic method help minimise discomfort during the procedure. Patients should follow instructions about fasting and medicines if these are provided by their surgical team. Step 3: Removal of the Cloudy Lens The most common technique is phacoemulsification. The surgeon makes a small incision and uses an ultrasound instrument to break the cloudy lens into small pieces, which are then removed. In selected cases, other surgical techniques may be recommended. Step 4: Insertion of the Artificial Lens An artificial intraocular lens is usually inserted into the natural lens capsule, where it helps focus light onto the retina. Step 5: Post-Operative Monitoring After surgery, the patient is monitored before discharge. Many people return home the same day, depending on their condition and the hospital’s instructions. The surgeon provides eye-drop instructions, activity precautions, and a schedule for follow-up visits. Lens Options for Cataract Surgery Choosing an appropriate intraocular lens is an important part of planning cataract surgery. Different lenses offer different visual benefits, and the best option depends on eye health, lifestyle, budget, and visual expectations. 1. Monofocal Lens A monofocal lens is designed to provide clear vision at one main distance, usually distance vision. Patients may still need glasses for reading or other close-up activities. Monofocal lenses are widely used and may be suitable … Read more