Cataracts have been a leading cause of vision problems for many years, affecting a significant portion of the population and leading to blindness if left untreated. The problem is caused by changes in the protein structure of the lens in the eye, which makes it opaque and blocks light, resulting in decreased vision. In the past, cataract surgery only improved distance vision and required patients to wear glasses for close-up activities. However, recent advancements in technology have brought about refractive phaco, allowing patients to see clearly at all distances after surgery.
According to Nguyen Van Sanh, Director of Hanoi High-Tech Eye Hospital, cataracts are becoming increasingly prevalent among younger people, with over 60% of blindness cases being attributed to this condition. Several factors can cause cataracts, including harmful substances from within the body or the external environment. The most effective treatment for cataracts is artificial lens replacement surgery where an intraocular lens (IOL) is used to replace the cloudy natural lens.
There are different types of IOLs available, including monofocal and multifocal lenses. Monofocal lenses focus light at a single point, usually for distance vision while multifocal lenses allow for clear vision at multiple distances including near, intermediate and far. The latest generation of multifocal IOLs such as asymmetric rotating refractive lenses provide significant advantages by allowing patients to see clearly at all distances without requiring glasses.
With advancements in technology, cataract patients now have access to high-quality lenses that improve their quality of life and help them perform daily activities without reliance on glasses. The use of asymmetric refractive multifocal IOLs is becoming increasingly common with over 60% of patients at Hanoi High-Tech Eye Hospital benefiting from these lenses. Additionally, these lenses enable patients with combined eye fundus disease to undergo examinations and interventions without any hindrances.
In conclusion, cataracts are still a common cause of vision problems but advancements in technology have made it possible for patients to see clearly at all distances after surgery. With different types of IOLs available and increasing use of asymmetric refractive multifocal lenses, cataract patients can now improve their quality of life and perform daily activities without relying on glasses.