What is an EDOF Lens?
An Extended Depth of Focus (EDOF) lens is a type of intraocular lens (IOL) which plays a vital role in procedures like cataract surgery and refractive lens exchange. What makes it unique is its capability to offer clear vision across multiple distances, thereby reducing one’s reliance on glasses or contact lenses post-surgery.
Here’s what you need to know about EDOF lenses:
- Their primary feature is the creation of a single elongated focal point, unlike multifocal lenses that have multiple discrete focal points. This extended focus helps achieve greater depth of focus than traditional monofocal lenses.
- The elongation of the focus ensures there’s no overlap between near and distant images, minimising visual disturbances such as halos and glare that are common with multifocal lenses.
- EDOF lenses are designed to offer a smooth range of vision from near to intermediate to far-off distances. This enhances contrast sensitivity and further reduces your dependence on corrective eyewear.
- One should be aware that there might be a slight decrease in overall retinal image quality compared to monofocal lenses if the aberrations are high.
- Diverse types of EDOF lenses exist, each utilising different optical principles like modifying spherical aberration or adopting a small aperture design. The ultimate goal is attaining a balance between an extended depth of focus and good visual quality.
Overall, EDOF lenses are an innovative technology that opens new doors for patients undergoing cataract and refractive surgeries by offering an alternative to traditional mono-focal and multifocal lens options.
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Cost of EDOF Lens in India
The cost of Extended Depth of Focus (EDOF) lenses varies across India, ranging approximately from ₹80,000 to ₹130,000 per eye. This variation largely depends on the specific brand and technology used in the lens.
Here’s a brief breakdown:
- Imported EDOF Lenses: Priced higher, typically between ₹40,000 to ₹60,000 per lens.
- Indian EDOF Lenses: More economical options fall within the bracket of ₹30,000 to ₹60,000 per lens.
- Premium Brands: Alcon’s Vivity is an example of a premium lens that can fetch up to ₹100,000 per lens.
- Affordable Options: Brands like Aurolab’s Vivid Lens are more budget-friendly at around ₹55,000.
The total expense also incorporates the surgeon’s fees and the charges levied by the hospital or clinic where you undergo cataract surgery. Compared to traditional mono-focal lenses that cost between ₹20,000 to ₹35,000, EDOF lenses are a pricier alternative. However, they offer enhanced vision benefits such as a wider range of clear vision and reduced glasses dependency making them worth the additional cost for many patients.
Top EDOF Lens Brands in India and Their Costs
When it comes to EDOF (Extended Depth of Focus) lenses, several brands stand out in India due to their quality and performance. Let’s look at some of them:
- Alcon Vivity IOL: Part of the offerings from global giant Alcon, these lenses come with a price tag between ₹100,000 to ₹150,000 per lens. The high cost is justified by their ability to provide a broad depth of focus for near, intermediary and long-distance vision, with minimal visual disturbances like glare and halos.
- Johnson & Johnson Eyhance IOL: Manufactured by another internationally renowned company, Johnson & Johnson, these lenses are priced at ₹40,000 – ₹60,000 per lens. They deliver a continuous range of vision and reduce reliance on spectacles due to their advanced wavefront technology.
- Aurolab Vivid Lens: Proudly Indian, Aurolab’s Vivid Lens costs around ₹55,000 per lens offering a more economical option. Despite the lower price tag, they’re designed to deliver an extended depth of focus.
- Tecnis Symfony IOL: Another EDOF lens from Johnson & Johnson, this one uses Echolette design to extend focus. Priced similarly at ₹40,000 – ₹60,000 per lens, they can significantly lessen the need for glasses post-cataract surgery.
- Softec HD by Bausch + Lomb: With prices ranging between ₹12,000 – ₹25,000 per lens and available in both monofocal and toric versions, they ensure good visual clarity and contrast sensitivity.
While EDOF lenses are considerably costlier than traditional monofocal lenses (₹20,000 to ₹35,000 per lens), they compensate for their price with a broader range of clear vision and reduced dependency on glasses.
How to Choose the Best EDOF Lens?
When it comes to eye health, ensuring you choose the right lens is crucial. If you’re considering an EDOF (Extended Depth of Focus) lens, there are several factors you need to consider.
- Assess Your Visual Needs and Lifestyle: Understand what you prioritise- distance, intermediate, or near vision. Consider your daily activities like working on a computer, driving and hobbies that require a specific vision range. Discuss these needs with your ophthalmologist to ensure a suitable EDOF lens selection.
- Lens Technology and Design: Familiarise yourself with various EDOF technologies- small aperture, wavefront-shaping and enhanced mono-focal designs. Evaluate factors like visual disturbances (halos, glare), contrast sensitivity and rotational stability. Newer non-diffractive EDOF lenses tend to have fewer side effects compared to older diffractive models.
- Surgeon Experience: The expertise of your cataract surgeon plays a crucial role in the success of EDOF lens implantation. Ensure they’ve experience implanting a variety of EDOF lenses and discuss their outcomes based on your individual needs.
- Cost and Insurance Coverage: Generally, EDOF lenses are pricier than traditional monofocal lenses with prices in India ranging from ₹30,000 to ₹150,000 per lens. It’s important to check if your insurance covers part of this cost.
- Set Realistic Expectations: No lens can offer perfect vision at all distances. EDOF lenses aim for a wider clear vision range but may not eliminate the need for glasses.
By keeping these factors in mind and maintaining an open dialogue about your expectations with your ophthalmologist, you can make an informed choice about the best EDOF lens for your visual needs, lifestyle and budget.
Benefits of EDOF Lens
EDOF (Extended Depth of Focus) lenses have many benefits that can significantly improve your quality of life.
- Enhanced Range of Vision: EDOF lenses provide an extended range of clear vision, from near to far distances, reducing your dependence on glasses or contact lenses. Unlike multi-focal lenses which create multiple focal points, EDOF lenses make a single elongated focal point for a broader field of view.
- Improved Visual Quality: With EDOF lenses, common visual disturbances like glare and halos are minimised. They also help maintain contrast sensitivity, ensuring that objects stand out distinctly against backgrounds.
- Seamless Transition Between Distances: The distinctive design of EDOF lenses allows for a smooth transition between near, intermediate and distant vision. This reduces the need for constant adjustments, especially beneficial during activities that require alternating between close-up and distant viewing.
- High Patient Satisfaction: Studies reveal high levels of patient satisfaction with EDOF lenses. Also, patients enjoy more spectacle independence and report having clear and comfortable vision at all distances.
- Suitable for Many Patients: EDOF lenses are appropriate for a broad spectrum of patients – those with cataracts, presbyopia or those seeking refractive lens exchange. They can offer significant benefits to those wishing to reduce their dependence on glasses.
It’s crucial to note that while EDOF lenses offer numerous advantages, they may not be suitable for everyone. Outcomes can vary based on individual eye health and visual preferences.
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FAQs Related to EDOF Lens Cost
Who is a good candidate for an EDOF lens?
Good candidates for EDOF lenses are individuals undergoing cataract surgery who desire improved vision at multiple distances and are looking to reduce their reliance on glasses, especially for activities such as reading or using digital devices.
Are there any risks or side effects associated with EDOF lenses?
As with any surgical procedure, there are potential risks and side effects, including glare, halos around lights, and difficulty seeing in low-light conditions. However, these effects are generally temporary and diminish over time.
How does an EDOF lens compare to a monofocal lens?
A mono-focal lens provides clear vision at a single distance (usually far), requiring glasses for other distances. In contrast, an EDOF lens extends the range of clear vision, reducing or eliminating the need for glasses for intermediate and some near tasks.
What is the typical recovery time after receiving an EDOF lens?
Recovery time varies, but most patients experience significant improvement in vision within a few days to a few weeks. Full adaptation to the EDOF lens may take a few months.
What activities can I expect to do without glasses after EDOF lens implantation?
After EDOF lens implantation, many patients can perform activities such as reading, using a computer, driving, and watching TV without the need for glasses
Can EDOF lenses be implanted during cataract surgery?
Yes, EDOF lenses are often implanted during cataract surgery. They replace the eye’s natural lens which has become cloudy due to cataracts, providing improved vision at various distances.
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