When is cataract surgery required, and how is it performed?

Cataract surgery is one of the most commonly performed and successful eye procedures worldwide. Cataracts develop when the eye’s natural lens becomes cloudy, leading to blurred vision, glare, difficulty with night driving, and reduced colour clarity. Surgery is recommended when these symptoms begin to interfere with daily activities such as reading, driving, or recognising faces.

The procedure involves removing the clouded natural lens and replacing it with an artificial intraocular lens (IOL). Cataract surgery is typically performed as a day-case procedure under local anaesthetic and usually takes less than 10-15 minutes. Most patients notice an improvement in vision within a few days, with gradual stabilisation over the following weeks.

There are several types of intraocular lenses available, and one advanced option is the premium multifocal lens. Unlike standard monofocal lenses, which are designed to focus at a single distance, multifocal lenses allow vision at multiple ranges. This means patients may be able to see clearly at near, intermediate, and distance levels without relying heavily on glasses.

Multifocal lenses work by distributing light to different focal points, enabling the brain to adapt and select the clearest image depending on the visual task. For many patients, this can reduce dependence on spectacles for activities such as reading, using digital devices, and driving. However, not everyone is an ideal candidate. Some individuals may experience visual side effects such as halos or glare, particularly at night.

A thorough pre-operative assessment is essential to determine suitability for multifocal lenses. Factors such as eye health, lifestyle needs, and visual expectations all play an important role in lens selection. With appropriate patient selection and expert surgical care, cataract surgery combined with multifocal lenses can offer excellent visual outcomes and greater freedom from glasses.