Monofocal Lens For Cataract Surgery in Delhi

What are Monofocal Lens

Monofocal lenses are intraocular lenses used in cataract surgery and refractive lens exchange procedures. Monofocal lenses provide clear vision at only one distance—usually either near, intermediate, or far. Patients typically choose the distance that best suits their lifestyle and visual needs prior to surgery. While monofocal lenses can significantly improve vision after cataract removal, they may still require the use of glasses for tasks requiring different focal distances.

Monofocal intraocular lenses are typically more affordable than other types of lenses, such as bifocals and trifocals. They are also easier to care for because they do not require special cleaning solutions or techniques; these lenses can be cleaned with regular soap and water.

If you are considering mono-focal lenses, talk to the best ophthalmologist in delhi at Pristyn Care about which type of lens is right for you. Generally, these are safe and effective ways to improve your vision. With the right pair of monofocal lenses, you can see clearly at all distances.                                                                  

What are the Types of Monofocal Lens?

Spherical Monofocal Lens – A spherical monofocal lens is a type of intraocular lens used in cataract surgery and refractive lens exchange procedures. It corrects vision at a single focal point, typically either for distance or near vision. Unlike toric or multifocal lenses, spherical monofocal lenses do not correct astigmatism or provide multiple focal points. Patients may still require glasses for tasks with different focal distances depending on the chosen focal point of the lens.

Aspheric Monofocal Lens – Aspheric monofocal lenses are a specialized type of intraocular lens used in cataract surgery and refractive lens exchange procedures. Unlike traditional spherical lenses, aspheric lenses have a more natural shape that mimics the curvature of the eye’s surface. This design reduces spherical aberration, improving contrast sensitivity and image quality, especially in low-light conditions. Aspheric monofocal lenses can offer clearer vision at one focal distance, typically either for distance or near vision, but may still require glasses for other distances. 

Toric Monofocal Lens – Toric monofocal lenses are intraocular lenses designed to correct astigmatism in addition to addressing cataracts or refractive errors. Unlike traditional spherical monofocal lenses, toric lenses have additional astigmatism correction built into their design, helping to improve overall visual acuity. While toric monofocal lenses offer clear vision at a single focal distance, typically either for distance or near vision, they are specifically tailored to correct astigmatism, reducing the need for glasses or contact lenses post-surgery for patients with astigmatism.

Get in touch with Pristyn Care to speak to the best eye surgeon in delhi for cataract removal surgery and the best monofocal lens.

How Does Monofocal Lens Help in Cataract Treatments?

Cataracts occur when the natural lens inside the eye becomes cloudy, leading to blurred or dim vision. This cloudiness typically develops gradually over time due to changes in the proteins within the lens, aging, or other factors like injury, genetics, or medical conditions such as diabetes.

During cataract suregry, the cloudy lens is surgically removed and replaced with an artificial lens called an Intraocular Lens (IOL). Monofocal lenses are a type of IOL used in cataract surgery. They have a single fixed focal point, meaning they provide clear vision at one specific distance, either for distance vision such as driving, watching TV or near vision such as reading a book or using a smartphone.

The monofocal lens is implanted into the eye to replace the cloudy natural lens. Once the lens is implanted, it helps to focus light properly onto the retina, restoring clear vision at the chosen distance. While monofocal lenses effectively treat the cloudy vision caused by cataracts, they do not correct other vision issues like presbyopia or astigmatism.

Pros and Cons of Monofocal Lens

Pros:

Monofocal lenses provide clear vision at one specific distance, either for distance or near vision, depending on the patient’s choice. 

Monofocal lenses are typically less expensive than premium lenses such as multifocal or toric lenses, making them a more cost-effective option for many patients.

The performance of monofocal lenses is well-established, and the outcomes are generally predictable, with high rates of success in restoring vision after cataract surgery.

Monofocal lenses may have a lower risk of causing visual disturbances such as glare, halos, or reduced contrast sensitivity, particularly in low-light conditions, compared to other types of lenses.

Cons:

Monofocal lenses provide clear vision at only one specific distance, meaning patients may still require glasses or contact lenses for tasks requiring other focal distances, such as reading or driving at night.

Patients with monofocal lenses may still need to rely on glasses or contact lenses to correct other vision issues such as presbyopia or astigmatism.

Monofocal lenses do not restore the eye’s ability to focus on objects at different distances.

While monofocal lenses offer clear vision at either distance or near, they may not adequately address intermediate vision tasks such as computer work or viewing objects at arm’s length.

Risks and Complications of Monofocal Lens

Monofocal lenses, while generally safe and effective, carry certain risks and potential complications:

• Visual Distortions and Halos – Some patients may experience minor visual distortions or halos around lights, though this risk is typically low with monofocal lenses.
• IOL Decentration – In rare instances, the intraocular lens (IOL) may tilt or shift slightly after surgery, affecting vision quality.
• Need for Additional Surgery – Incorrect lens sizing or lens dislocation may necessitate further surgical intervention to correct.
• Refractive Surprise – Occasionally, the patient’s postoperative refractive error (how clearly they see without glasses) may differ significantly from pre-surgery predictions, particularly in cases of severe myopia or hyperopia.
• Increased Intraocular Pressure – Monofocal IOLs can sometimes irritate intraocular structures, leading to elevated pressure within the eye.
• Posterior Capsule Opacification (PCO)This common complication, also known as secondary cataract, involves the clouding of the capsule behind the implanted lens. Laser treatment can effectively manage PCO.
• Risk of Infection – Signs of infection post-surgery may include pain, redness, and vision disturbances, necessitating prompt medical attention.
• Bleeding – Although rare, bleeding between the cornea and iris following lens implantation can lead to increased intraocular pressure and requires immediate medical intervention.

Best Monofocal Lens Brands

Global Brands:

• Alcon
• Johnson & Johnson Vision
• Bausch + Lomb
• Zeiss
• HOYA Surgical Optics

Indian Brands:

• Appasamy Associates
• Aurolab
• Care Group
• Micro Labs
• EyeKon Medical