14 Questions answered

How long should I allow for my vision to stabilise after LASIK before going for LASIK enhancement?

Hi Elaine It is important to consider if one’s vision has stabilized after the original LASIK surgery before undergoing LASIK enhancement. There is NO definite duration of time, but in general at least 3 months after LASIK, would be the approximate period. Nevertheless, the duration after the initial LASIK surgery, is not the most important factor to consider. If there are still changes seen in the spectacles prescription after 3 months, it will not be advisable to undergo LASIK enhancement despite the time duration.

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Answered By

Dr Jimmy Lim Wei Kheong

Ophthalmologist

When should a cataract surgery be avoided?

First and foremost, there must always be an indication for cataract surgery. Cataract surgery should be performed when the patient’s vision is being affected by cataract, and/or when the cataract is dense and affecting the patient’s daily living activities. Surgery should also be performed in instances where poor vision poses danger, such as an elderly patient with the risk of falling and/or patients who drive frequently and have difficulty seeing street signs and other cars when they are on the road.

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Answered By

Dr Jimmy Lim Wei Kheong

Ophthalmologist

How does a doctor choose the best intraocular lens (IOLs) for me?

Hi Yee Min, Thank you for the D2D. With so many types of intraocular lens techonologies, it can be confusing which lens one should choose. As an experienced cataract and refractive surgeon, one of the most important information I need in order to ascertain the best lens for the patient is to understand his daily activities, occupation, hobbies and visual needs. As each patient’s needs are different, I will personalize the management of their eye conditions and customize their visual requirements with the appropriate lens.

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Answered By

Dr Jimmy Lim Wei Kheong

Ophthalmologist

What are the best ways to take care of a patient after a cataract surgery?

Thanks for theD2D. It is very important to follow the post-operation instructions given by the surgeon to ensure a smooth and speedy recovery. Patients should maintain strict compliance to the post-surgery medications provided and ensure that their eyes and eyelids are always kept clean and water does not enter the eye. At my clinic, we provide our patients with a “care pack” containing the necessary medication, accessories and instructions for post-surgery care.

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Answered By

Dr Jimmy Lim Wei Kheong

Ophthalmologist

Will I be able to have cataract surgery after LASIK?

D2D. Yes, many patients who had LASIK performed when they were younger develop cataracts as they age. They will certainly be able to undergo cataract surgery to improve their vision. However, as LASIK changes the curvature and power of the cornea, conventional biometric measurements of the eye very often lead to inaccurate refractive outcomes for this group of patients after cataract surgery.

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Answered By

Dr Jimmy Lim Wei Kheong

Ophthalmologist

Are glasses necessary after cataract surgery?

Hi Chee Meng, D2D. Using advanced biometric technologies and the latest equipment at our centre, my objective is for every patient to be independent of spectacles after they undergo cataract surgery. At my clinic, our team goes through a very stringent and meticulous process of measuring the biometry of each patient’s eye. We use multiple different types of formulae to choose the most appropriate lens for the patient’s needs.

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Answered By

Dr Jimmy Lim Wei Kheong

Ophthalmologist

Will cataract surgery improve my night vision?

D2D. If your poor night vision is due to a dense or mature cataract, your night vision will certainly be improved after cataract surgery. However, if you have already been experiencing poor night vision even before the development of cataracts, then your poor night vision may be due to a problem in your retinal as opposed to the cataract. For cases of this nature, cataract surgery will NOT be able to improve your night vision. Hope this helps!

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Answered By

Dr Jimmy Lim Wei Kheong

Ophthalmologist

Can untreated cataracts cause long-term damage to the eye?

Thanks for D2D. Yes, this is true although the likelihood is uncommon in a developed country like Singapore where healthcare is accessible to the population. If cataracts become “hard” or dense, it can block the patient’s vision resulting in poor vision or “blindness”, but this condition can potentially be corrected with cataract surgery. However, when the cataract becomes “intumescent”, “swollen” or “hypermature”, it may result in inflammation or very high eye pressure.

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Answered By

Dr Jimmy Lim Wei Kheong

Ophthalmologist

What are the different types of cataracts?

Thanks for the D2D. Indeed, there are many different types of cataracts. Some cataracts are related to genetics (congenital cataracts) while some are brought about by trauma and injury. Other cataracts may be associated with the use of medication such as steroids. However, the most common cataracts that we see are related to degeneration from aging.

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Answered By

Dr Jimmy Lim Wei Kheong

Ophthalmologist

Can cataract surgery fix Astigmatism?

D2D. Yes. Over the years, many different surgical techniques have been employed to correct astigmatism during cataract surgery. Current intraocular lens technology corrects low to high astigmatism with much precision using Toric (astigmatic) intraocular lenses. In order to place these lenses accurately, we use advanced technologies and the latest equipment at our centre to map out the curvature of the cornea and measure the astigmatism of the eye. These measurements enable the precise placement of the lens in the correct axis and thus reduces the astigmatic power of the eye.

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Answered By

Dr Jimmy Lim Wei Kheong

Ophthalmologist

Why am I seeing floaters after my cataracts surgery?

Thanks for the D2D. Floaters are very common symptoms in many people’s eyes. The most common cause of floaters is degeneration of the vitreous gel and posterior vitreous detachment. As patients with cataracts have poorer vision, it is common that they are unable to detect floaters in their field of view. However, after the patient undergoes cataract surgery, his vision improves and floaters in his eyes become more visible. It is very important to let your eye surgeon know about your symptoms.

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Answered By

Dr Jimmy Lim Wei Kheong

Ophthalmologist

What can I do to decrease my risk of getting cataracts?

Hi Hwee Leng, Thank you for your D2D. Yes, there are some scientific discussions on the prevention of cataract through the use of anti-oxidants and ultraviolet (UV) protection. Close up of cataract during eye examination Other preventive measures include wearing protective eye wear when playing racquet games such as squash and badminton to shield your eyes from any accidental injuries. I often advise my patients to wear sunglasses with UV protection when outdoors to decrease exposure to the harmful UV rays and protective eyewear at work where they are exposed to heat and particles.

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Answered By

Dr Jimmy Lim Wei Kheong

Ophthalmologist

What are the different types of intraocular lens (IOLs) available in Singapore?

Thanks for D2D. There are many types of intraocular lens (IOLs) to cater for different refractive needs of the patients. The following are the different lens technologies available: Monofocal Lenses (Aspheric/Non Aspheric) which corrects the patient’s short-sightedness (myopia) or far-sightedness (hyperopia). Toric Monofocal Lenses which corrects the patient’s short-sightedness (myopia) or far-sightedness (hyperopia) and in addition, corrects the patient’s astigmatism.

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Answered By

Dr Jimmy Lim Wei Kheong

Ophthalmologist

What happens if my vision becomes cloudy again after cataract surgery?

D2D. Patients experiencing cloudy vision again after cataract surgery are likely to have posterior capsular opacities or “after cataracts”. This refers to the regeneration of cells along the “bag” or membrane that is left behind to contain the intraocular lens. This is not a complication from the initial cataract surgery, but it can happen to some patients months or years after a successful cataract surgery. This condition can be managed effectively by undergoing a laser procedure known as YAG capsulotomy.

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Answered By

Dr Jimmy Lim Wei Kheong

Ophthalmologist

Practice

6 Napier Road #07-10 Gleneagles Medical Centre Singapore 258499

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* This profile has been last updated on May 22, 2020.