Multifocal Intraocular Lenses for Cataracts: Say Goodbye to Reading Glasses in One Surgery, Regain Clear Vision

Introduction

Cataracts are the leading cause of blindness worldwide, and surgery is the only effective treatment. While traditional monofocal intraocular lenses can restore distance vision, patients still need reading glasses afterward, which disappoints many. Today, the advent of multifocal intraocular lenses makes it possible to address both cataracts and presbyopia in a single surgery. Data shows that over 20 million cataract surgeries are performed globally each year, with the use of multifocal lenses steadily rising, accounting for more than 30% of all IOLs in Europe and the United States. For middle-aged and older patients seeking high-quality vision, multifocal lenses are undoubtedly a choice worth understanding.

Multifocal Intraocular Lenses: Principles and Types

Multifocal intraocular lenses use special optical designs to distribute incoming light across multiple focal points, allowing the brain to process images at distance, intermediate, and near ranges simultaneously. Current mainstream types include:

Diffractive multifocal lenses (e.g., Alcon PanOptix): Utilize stepped diffractive rings to achieve extended depth of focus, with excellent intermediate vision (60-80 cm), suitable for those who use computers and smartphones.

Regional refractive lenses (e.g., Oculentis): Feature a design with distance vision in the upper zone and near vision in the lower zone, resulting in fewer visual disturbances and better contrast, though night halos may occur.

Extended depth of focus (EDOF) lenses (e.g., Vivity): Not truly multifocal, but by stretching the depth of focus, they provide smooth intermediate vision with less nighttime glare, ideal for patients with high visual quality demands.

The choice of lens depends on individual visual habits, pupil size, corneal conditions, and budget. For example, frequent drivers may prefer EDOF lenses, while retirees who enjoy reading might opt for diffractive lenses.

Surgical Procedure and Recovery Time

Multifocal IOL implantation is performed as part of cataract surgery, with a process similar to standard cataract procedures:

Comprehensive preoperative examination: Includes corneal topography, axial length measurement, and fundus examination to ensure the eye is suitable for multifocal lenses. If patients have severe dry eye or macular pathology, these must be treated before surgery.

Surgical steps: Under local anesthesia, the surgeon creates a 2-3 mm micro-incision, uses phacoemulsification to remove the cloudy lens, and then implants the folded multifocal IOL. The entire procedure takes about 15-20 minutes, requires no sutures, and does not necessitate hospitalization.

Recovery time: Most patients experience improved vision on the day of surgery, but full adaptation takes 1-3 months. During this period, visual phenomena such as glare and halos may occur, which the brain gradually adapts to, typically resolving within 3 months. In the first week post-surgery, patients should avoid rubbing the eyes and bending down, and use antibiotic and steroid eye drops as prescribed.

Compared to monofocal lenses, the recovery period for multifocal lenses is slightly longer, but the final outcomes are better, with patient satisfaction rates exceeding 90%.

Who Is Suitable for Multifocal Lenses?

Not all cataract patients are candidates for multifocal lenses. Ideal candidates include:

Active individuals over 50 years old whose cataracts affect daily life and who wish to be free from glasses after surgery.

Those with regular corneas and no significant astigmatism (or correctable during surgery).

Individuals without glaucoma, retinal diseases, or macular degeneration that affect central vision.

Patients with good psychological health and realistic visual expectations, who can accept initial postoperative visual phenomena.

Contraindications include severe dry eye, post-corneal transplant status, abnormal capsular tension, and those with extremely high visual quality demands who cannot tolerate any halos. Therefore, preoperative evaluation is critical, and patients are advised to communicate thoroughly with their doctor and complete detailed examinations.

How International Patients Can Choose and Seek Care

For overseas patients, choosing multifocal lenses involves considering:

Medical standards: Ensure the hospital uses internationally certified surgical equipment and lenses, and that surgeons have extensive experience with multifocal IOL implantation, which can be verified through case studies and patient reviews.

Cost and insurance: Multifocal lenses are premium materials, typically costing 2-5 times more than monofocal lenses, and most insurance plans do not cover them. However, considering their long-term value, they remain highly cost-effective.

Language and follow-up: Choose medical institutions that offer Chinese translation services and postoperative follow-up to ensure seamless communication.

We at MedBridge specialize in connecting international patients with top-tier ophthalmic resources in Shanghai, providing full-service support from preoperative consultation and surgery scheduling to postoperative follow-up. Our partner hospitals are equipped with world-leading diagnostic tools such as the Zeiss IOL Master 700 and have expert teams with over 10,000 cases of multifocal IOL implantation experience. If you would like to know specific costs, you can use our cost estimator tool or directly contact us for professional advice.

Recommendations for International Patients

Early evaluation: Complete initial ophthalmic examinations in your home country (or locally), and bring corneal topography, refraction reports, and other data to help Shanghai specialists make precise judgments.

Communicate expectations: Clearly inform your doctor of your visual needs (e.g., driving, reading, using electronic devices) and understand the limitations of multifocal lenses, such as nighttime halos.

Allow recovery time: Plan to stay in Shanghai for at least one week post-surgery for follow-up checks to ensure stable recovery. Most patients can resume normal activities within two weeks, but flying is recommended after one week.

Long-term follow-up: After returning home, have annual fundus examinations. Multifocal lenses do not interfere with future retinal disease treatments, but eye protection and avoiding trauma are important.

One surgery not only eliminates cataracts but may also eliminate the need for reading glasses—a blessing of modern medicine. Choosing a professional team brings clear vision within reach.