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Key Takeaways:
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Our eyes play a vital role in how we experience the world. Much like a natural camera, light enters the eye and is focused by a clear, transparent lens onto the retina, enabling the brain to form sharp and detailed images. When this process functions normally, vision remains crisp and comfortable across different lighting conditions and distances.
However, changes within the eye can gradually disrupt this clarity. One such change is the development of a cataract, which causes progressive clouding of the eye’s natural lens. As this clouding increases, the amount and quality of light reaching the retina reduces, leading to blurred, dim, or distorted vision. In the early stages, these changes may be subtle and easy to overlook. Over time, however, cataracts can significantly interfere with daily activities such as reading, writing, recognising faces, and driving, particularly at night.
Temporary measures like updated spectacles or improved lighting may offer limited relief initially. As the condition progresses, these adjustments become insufficient, making surgical intervention necessary to restore functional vision.
What is a Cataract?
A cataract is a condition in which the eye’s natural lens becomes cloudy due to the gradual breakdown and clumping of proteins within the lens. In a healthy eye, the lens remains clear and allows light to pass through efficiently. When a cataract forms, this clarity is compromised, resulting in hazy or blurred vision, often described as looking through fogged or frosted glass.
Cataracts usually develop slowly and may affect one or both eyes. Because the progression is gradual, many individuals do not notice significant visual impairment initially. As the cataract advances, however, vision deterioration becomes more pronounced, underscoring the importance of timely evaluation and appropriate treatment.
Before exploring the different types of cataract surgery available today, it is important to understand the causes and symptoms that signal the progression of cataract.
Cause of Cataracts
Cataracts most commonly develop as a part of the natural ageing process, as the proteins within the eye’s lens gradually break down over time. However, ageing is not the only factor that can lead to cataract formation. Several other conditions and exposures can accelerate or trigger this change in the lens. Common causes and risk factors include:
- Ageing: Natural lens changes over time
- Diabetes: Elevated blood sugar accelerates lens clouding
- Prolonged steroid use: Oral or topical steroids can sometimes lead to cataract
- Excessive UV exposure: Long-term sunlight exposure without eye protection can cause cataract
- Eye injury or trauma: Even injuries from years earlier can lead to cataract formation
- Congenital or childhood cataracts: Though it is a rare cause but can affect children
Symptoms of Cataract
If left untreated, cataracts can worsen over time and may eventually lead to severe visual impairment or blindness. Recognising the symptoms early allows for timely diagnosis and intervention.
Common cataract symptoms include:
- Hazy or blurred vision
- Reduced vision in low-light or night-time conditions
- Colours appearing faded or yellowish
- Halos or glare around lights
- Increased sensitivity to bright light
If these symptoms begin to interfere with daily life or worsen noticeably, it may indicate that the cataract is progressing. At this stage, consulting an ophthalmologist is essential. Based on clinical evaluation, the doctor may recommend cataract extraction surgery, a safe and highly effective procedure to restore visual clarity.
What is Cataract Extraction Surgery?
Cataract extraction surgery involves removing the eye’s cloudy natural lens and replacing it with an artificial intraocular lens (IOL). The procedure is one of the most commonly performed surgeries worldwide and has a high success rate.
Before surgery, your ophthalmologist will assess your eye health and discuss the most suitable IOL options based on your vision needs, lifestyle, and any pre-existing conditions. Let’s now understand types of Intraocular Lenses (IOLs) used in cataract patients.
- Monofocal IOLs: Monofocal IOLs provide clear vision at a single focal distance, usually for far vision. Patients may still require glasses for reading or close work.
- Multifocal IOLs: Multifocal IOLs are designed with multiple corrective zones, similar to bifocal or trifocal glasses. They help correct both near and distance vision, reducing dependence on spectacles.
- Extended Depth-of-Focus (EDOF) IOLs: EDOF IOLs offer an extended range of vision, particularly for intermediate and distance tasks. Many patients experience reduced need for reading glasses with these lenses.
- Toric IOLs: Toric IOLs are specifically designed for patients with astigmatism. They correct both cataract-related vision loss and astigmatism, often reducing the need for corrective eyewear.
Once the IOL is selected, the next step is choosing the appropriate surgical technique.
Types of Cataract Extraction Surgery
Modern ophthalmology offers more than one approach to cataract removal. Your doctor will recommend the most suitable option for cataract extraction surgery based on eye condition, cataract severity, and lifestyle needs. This can be either phaco surgery or laser surgery.
Phacoemulsification (Phaco Surgery)
Phacoemulsification is the most widely performed cataract extraction surgery. The procedure typically takes 15–30 minutes. The surgical steps in phacoemulsification follow these steps:
- A small incision is made at the edge of the cornea under local or topical anaesthesia
- An ultrasonic probe breaks the cloudy lens into tiny fragments
- The fragments are gently suctioned out
- The IOL is inserted through the same incision
Phaco surgery is safe, minimally invasive, and allows for quick recovery.
Femto-Assisted (Laser) Cataract Surgery
Femto-assisted cataract surgery, often referred to as bladeless or robotic cataract surgery, uses a femtosecond laser to perform key steps of the procedure with high precision.
Benefits include:
- Greater accuracy and predictability
- Reduced manual intervention
- Potential correction of mild astigmatism
- Faster healing in selected cases
When comparing phaco vs laser cataract surgery, both techniques are effective. Laser-assisted surgery may offer added precision in certain cases, but the final decision depends on individual clinical needs and surgeon recommendation.
Conclusion
If you are experiencing symptoms of cataract, early consultation with an eye specialist is strongly recommended. Cataract extraction surgery is a safe, proven procedure that successfully restores vision in the vast majority of patients.
For advanced cataract care, Centre for Sight offers comprehensive evaluation, modern cataract surgery options, and access to advanced femtosecond laser platforms such as Catalyst and LenSx. Backed by experienced eye surgeons and standardised care protocols, Centre for Sight focuses on safe surgery, precision, and long-term visual clarity. Book your consultation today!
FAQs
What is cataract extraction surgery?
It is a surgical procedure in which the cloudy natural lens is removed and replaced with an artificial intraocular lens to restore clear vision.
Which type of cataract surgery is best?
There is no single “best” option for everyone. The choice depends on cataract severity, eye health, lifestyle needs, and surgeon recommendation.
What is the difference between phaco and laser cataract surgery?
Phaco uses ultrasonic energy to break the lens, while laser surgery uses a femtosecond laser for greater precision in selected steps. Both are safe and effective.
Is cataract surgery painful?
No. The procedure is performed under local or topical anaesthesia and is generally painless.
How long does recovery take after cataract surgery?
Most patients resume normal activities within a few days, with full visual stabilisation over a few weeks.
