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Laser Cataract Surgery: Procedure, Benefits, Cost and Side Effects

Last Updated: Jul 07, 2023

What is cataract surgery?

Cataract surgery is a common and safe surgical procedure that deals with the removal of a cloudy lens and replacing it with an artificial one, called an intraocular lens (IOL) for improved vision. The three types of IOL available are fixed strength (monofocal) or toric lenses used in the majority of cataract surgery usually set for distance vision; accommodating lenses focus on both distant and near objects like natural lens does and multifocal lenses also for near and distant vision.

The procedure takes about 30-45 mins and is usually carried out under local anaesthesia. The accommodating and multifocal lenses come with the advantage of reducing the need to use reading glasses post-surgery. But despite the type of lenses, most people do require reading glasses after surgery.

Cataract treatment assisted with laser surgery is used for making extremely accurate incisions in very less time. So, improved accuracy is characteristic of laser-assisted surgery, giving a high correction degree for refractive error like astigmatism or myopia or hyperopia.

How is Cataract Surgery done?

In Laser cataract surgery, a camera or ultrasound imaging device is positioned over the affected eye to plot the surface of the lens and get its information for the corneal incision with a sophisticated 3-D eye imaging known as OCT (Optical Coherence Tomography). The device then procures precise size, depth and location of the incisions from a computer that programs the laser irrespective of the surgeon’s experience and expertise.

This type of incision comes with the advantage of self-sealing after the operation reducing the possibility of infection. A femtosecond laser is used for anterior capsulotomy for precision and reproducibility.

The laser softens the cataract, makes the corneal incision, then opens into the lens capsule, the ultrasound probe breaks the lens thereby sucking it out in pieces and finally IOL implant is carried out. Studies have shown that opening with the help of this technology is about 10 times more accurate than done with hand held devices.

With the help of laser technology, less energy is required for the process of lens and cataract fragmentation and therefore reduced chance of twisting and burning the incision. Just before the surgery, the pupil is dilated (widened) with the help of an eye drop and is numbed with a local anaesthetic. So, femtosecond laser technology brings new levels of accuracy, predictability and safety.

Who is eligible for Cataract Surgery?

Every person with cataract does not need surgery. People with cataract also get double visions, have problem to read and work on computer, have poor night vision, find it difficult to drive in the dark. Also those who fail in the driver’s vision test, or ones who are more sensitive to the sun’s glare, and for whom playing sports like golf are difficult, are eligible for laser cataract surgery. Added to this, if you also suffer from astigmatism and wish for a refractive error correction during cataract surgery, laser assisted surgery can be preferred.

Who is not eligible for Cataract Surgery?

People with minor cataract can be fine with their sight if they use a magnifying lens or wear a prescript reading glass or even bright light. Also, if you have irregularly shaped or too thin corneas, dry eyes, existing unstable vision, physiological factors such as pregnancy, heightened refractive error and existing degenerative disorders.

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Are there any side effects of Cataract Surgery?

Side-effects due to laser cataract surgery are rare to happen, although some of them that have been reported are dry eyes. About 50 percent of laser eye surgery patients come across eye syndrome which can be corrected with the aid of eye drops. Patients also complain of minor discomfort and visual disturbances with mild irritation, halos, glares and hazy vision that are mostly temporary. Eye infection can also occur in few patients, in some cases, they can also require wearing glasses or contacts, and some may complain about flap complications. There can be temporary, mild subconjunctival haemorrhage in some operated ones.

What are the post-treatment guidelines?

You will be prescribed with eye drops to avoid infection. Putting any pressure on your eyes, picking up heavy objects, driving or bending over to anything must be avoided. Your doctor will suggest you to put on an eye-shield for the first few days while sleeping. It takes about 8 weeks for your eyes to heal completely and around 90 percent of people have improved eyesight after the surgery. Glasses or contact may still be required to be worn even after the surgery. Clear vision after few hours of surgery may be seen in few patients and each one heals in one’s own pace and may require a week or even two to view sharpest images.

How long does it take to recover from Cataract Surgery?

The surgery recovers within about a month with the eye completely healed up.

What is the cost of cataract surgery in India?

The cost of laser cataract surgery is between Rs. 25,000 to Rs. 35,000 but it totally depends upon the surgeon and the hospital.

Are the results of the Cataract Surgery permanent?

Yes, the results of laser cataract surgery are mostly permanent and may last a lifetime although the person is required to wear glasses post-surgery for protection and sharp vision.

References

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Written ByDr. Ruchi MBBS Bachelor of Medicine and Bachelor of Surgery,DOMS,MBBSOphthalmology
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Reviewed ByDr. Bhupindera Jaswant SinghMD - Consultant PhysicianGeneral Physician
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