Compare Monofocal, EDOF, Multifocal, RayOne Galaxy & TECNIS Odyssey intraocular lens (IOL) Options available at Harley Vision in London
Last Updated: October 2025 | Harley Vision – Serving London & Southeast England
Quick Answer: Which IOL is Best?
The best intraocular lens (IOL) depends on your lifestyle and visual priorities:
- Monofocal: Best for night driving clarity and very crisp distance vision quality (reading glasses required)
- EDOF/Premium Monofocal: Ideal for computer users who want distance + intermediate vision (readers for fine print). Can be an excellent choice for those who play golf, tennis or padel.
- Multifocal/Trifocal: Maximum glasses independence across all distances (some halos at night)
- RayOne Galaxy: Full range of vision with minimal night-time halos (best of both worlds)
- TECNIS Odyssey: Premium full-range lens optimized for low-light conditions and digital lifestyles
Over 95% of our patients achieve 20/25 vision or better with their chosen lens.
Understanding Cataract Surgery vs. Lens Replacement Surgery (RLE)
The surgical procedure is identical—both involve removing your natural lens and replacing it with an artificial intraocular lens (IOL). The difference lies in the reason for surgery:
Cataract Surgery
Performed when your natural lens has become cloudy (cataract), causing blurred vision. Cataract surgery is when the cloudy lens in your eye is replaced with an intraocular lens implant that restored your vision.
Learn more about Cataract Surgery
Lens Replacement Surgery (Refractive lens exchange, RLE)
RLE is an elective procedure before cataract forms to correct presbyopia and refractive errors. The natural lens of the eye is replaced, often with a multifocal implant, to give lifelong freedom from reading glasses. Learn more about RLE
All premium IOL options discussed below are available for both procedures. Your choice of lens—not the procedure type—determines your visual outcome.
Our Results
- 10,000+ Procedures by Our Surgeons
- 98.5% Patient Satisfaction

At-a-Glance IOL Comparison: Vision Range & Trade-Offs
| Lens Type | Vision Category | Near Vision | Night Driving/Contrast | Halos & Glare | Glasses Dependency |
| Monofocal | Single Focus | ★☆☆☆☆ | Excellent | Lowest | Reading glasses for all tasks |
| Premium Monofocal | Increased Range of Vision | ★★☆☆☆ | Excellent | Very Low | Readers needed for fine print |
| EDOF | Increased Range of Vision | ★★★½☆ | Very Good | Low-Moderate | Occasional readers for small print |
| Multifocal (Trifocal) | Full Range of Vision | ★★★★½ | Good (slightly reduced) | Highest (more halos) | Minimal or None |
| RayOne Galaxy | Full Range of Vision | ★★★★½ | Very Good | Low (reduced night halos) | Minimal or None |
| TECNIS Odyssey | Full Range of Vision | ★★★★½ | Very Good (Optimized) | Low-Moderate (Optimized) | Maximum independence |
Important: Star ratings are general guides based on typical performance. Above ratings are a rough guide and not exact. Actual visual outcomes vary based on your unique eye optics, specific IOL model, and surgeon’s refractive target. Toric options available across all categories to correct astigmatism.
How Each Lens Type Works: The Optics Explained
Monofocal Lenses (Single Focus)
How it works: These lenses focus light to one clear point, offering the crispest contrast at that distance (usually far).
Best for: Patients who prioritize exceptional night driving vision, have subtle eye health concerns, or prefer simplicity.
Advantages:
- Sharpest contrast and clarity
- Best night driving performance
- Minimal visual side effects
- Proven reliability
Trade-offs:
- Reading glasses required
- Glasses needed for intermediate tasks
- No near vision without correction
Increased Range of Vision Lenses
These options expand the single focal point to provide clearer vision across a broader range, improving everyday functionality.
Premium Monofocal Lenses
How it works: Gently expands the focal range to include intermediate distances with minimal optical compromise.
Best for: Those wanting excellent distance vision plus computer-range clarity without significant side effects.
Advantages:
- Improved computer/dashboard vision
- Excellent contrast preservation
- Minimal halos or glare
- Natural visual quality
Trade-offs:
- Reading glasses still needed
- Fine print requires correction
EDOF Lenses (Extended Depth of Focus)
How it works: Extends focus smoothly from distance through intermediate range, creating a continuous visual zone.
Best for: Active individuals who need clear distance and intermediate vision for daily activities.
Advantages:
- Strong intermediate vision (3.5-star near vision rating)
- Good distance clarity
- Low to moderate glare risk
- Glasses-light lifestyle
Trade-offs:
- Occasional readers for fine print
- May need glasses in low light
Full Range of Vision Lenses
Designed to provide simultaneous clarity at near, intermediate, and far distances—maximizing spectacle independence.
Multifocal & Trifocal Lenses
How it works: Splits incoming light into separate, distinct focal points for near, intermediate, and distance vision.
Best for: Patients prioritizing maximum glasses independence who can adapt to potential halos.
Advantages:
- Robust near vision (4.5 stars)
- Excellent reading ability
- All-distance clarity
- Minimal glasses dependence
Trade-offs:
- Higher risk of halos/starbursts
- Adaptation period required
- Slightly reduced contrast
- Not ideal for professional night drivers
RayOne Galaxy (AI-Designed Lens)

How it works: Uses a revolutionary non-diffractive AI-designed spiral optic that provides continuous focus from distance to near without splitting light.
Best for: Patients wanting full range of vision with minimal night-time halos—the best of both worlds.
Advantages:
- Full range of vision (4.5 stars)
- Low risk of night-time halos
- Excellent contrast preservation
- Smooth, continuous focus
- Minimal glasses dependency
Trade-offs:
- Premium pricing
- Newer technology (though extensively tested)
Learn more about Rayner RayOne Galaxy
TECNIS Odyssey (Premium Hybrid Lens)

How it works: Engineered with optimized diffractive technology and InteliLight™ system to deliver exceptional clarity across all distances while improving low-light performance.
Best for: Patients with active digital lifestyles seeking maximum spectacle independence with superior contrast sensitivity.
Advantages:
- Exceptional near, intermediate, and distance (4.5 stars)
- Optimized for low-light conditions
- Enhanced contrast sensitivity
- Reduced visual disturbances
- Maximum independence across all distances
Trade-offs:
- Premium pricing
- Low-moderate glare (though optimized)
Learn more about J&J TECNIS Odyssey lens
Choosing the Right IOL: Matching Lens to Lifestyle
The best lens for you depends on your daily visual demands, tolerance for optical phenomena, and desire for spectacle independence.
Decision Framework
Choose Monofocal (Single Focus) if:
- Night driving quality is your top priority
- You prefer the simplest, most proven visual outcome
- You don’t mind wearing reading glasses
- You have subtle eye health concerns
Choose Increased Range (Premium Monofocal/EDOF) if:
- You spend significant time on computers or digital devices
- You want improved intermediate vision (dashboard, cooking, shopping)
- You’re willing to use readers occasionally for fine print
- You want minimal optical side effects
Choose Full Range (Multifocal/Galaxy/Odyssey) if:
- Minimal glasses dependence is your primary goal
- You want to read menus, phones, and books without glasses
- You’re comfortable with an adaptation period
- Your profession doesn’t involve frequent night driving
- Galaxy specifically: You want full range vision but need excellent night driving
- Odyssey specifically: You need superior performance in varying light conditions
Suitability Considerations
Good candidates for premium lenses typically have:
- Healthy macula and optic nerve
- Manageable dry eye symptoms
- Regular corneal shape
- Realistic expectations about visual outcomes
We may recommend Single Focus or Increased Range lenses if you have:
- Significant dry eye disease
- Notable macular degeneration or macular disease
- Advanced glaucoma
- Very large pupils (increasing halo risk)
- Zero tolerance for night-time visual phenomena
Note: The RayOne Galaxy’s non-diffractive design may make Full Range of Vision accessible to some patients previously limited by concerns over traditional multifocal halos.
Correcting Astigmatism for Optimal Results
Even mild astigmatism can blur vision across all lens types. At Harley Vision, we address astigmatism through:
Toric IOL Implants: Specialized lenses with built-in astigmatism correction, available across all six lens categories.
Our comprehensive diagnostic approach ensures your chosen lens performs at its absolute best.
IOL Cost & Investment Information
Understanding the investment in your vision:
Cataract Surgery & RLE
Comprehensive package pricing includes pre-operative assessment, surgery, lens implant, surgeon fees, facility fees, and aftercare.
- Monofocal IOL: From £2,500 per eye
- Premium Monofocal/EDOF: From £2,900 per eye
- Multifocal/Trifocal: From £3,600 per eye
- RayOne Galaxy: From £3,600 per eye
- TECNIS Odyssey: From £3,600 per eye
What’s included: Comprehensive diagnostic testing, surgical procedure, premium IOL implant, surgeon fees, facility fees, and 12 months of post-operative care.
💡 Cost Perspective: Premium IOLs are a one-time investment that lasts a lifetime. When compared to decades of purchasing glasses, contact lenses, and reading glasses (estimated £200-500/year), many patients find premium lenses cost-effective over time.
The Harley Vision Difference: Why Patients Choose Us
Our personalised, data-driven approach ensures you receive the lens that’s genuinely right for your eyes and lifestyle.
Not Tied to Any Company—We Choose What’s Best for Your Eyes
We don’t have special deals with any companies forcing us to use specific lasers or implants. Although this is more expensive for us because we don’t benefit from economies of scale like many other clinics, we simply don’t care.
What we do care about is having the flexibility to use whatever lens implant or laser technology we think is best for the patient. Rest assured that at Harley Vision, we will offer you what we believe is the best choice for your eyes, rather than what we are ‘forced’ to use.
The UK is one of the best possible places in the world to have the latest technology in eye surgery, because we have more laser and lens implant choices than many other countries around the world.
Other reasons to choose Harley Vision:
- Expert Clinical Director: UK and Canada trained refractive, cataract and corneal surgeon, known for delivering outstanding outcomes with premium lenses. One of the few ophthalmic surgeons in the world certified in the UK, USA, Canada, Europe.
- Advanced Diagnostics: We use AI-powered lens planning tools and precise biometry to select the ideal IOL for each patient.
- Early Access to Innovation: As one of the first UK clinics to offer newest IOLs like Galaxy and Odyssey lenses, we have deep experience with its benefits and suitability criteria.
- Hospital-Based Surgery: Procedures are performed at top-rated CQC-registered London hospitals (including the Hospital of St John and St Elizabeth, and King Edward VII’s Hospital).
- Patient-Centred Care: From initial consultation to post-op care, we ensure your treatment is tailored, comfortable, and transparent.
Learn more about Why Harley Vision
Our 6-Step Process
- Measure: Comprehensive diagnostics including biometry (multiple formulae), corneal topography, aberrometry, tear-film analysis, and macular OCT to build your precise optical profile.
- Match: Structured lifestyle conversation mapping your visual priorities—night driving, digital work, hobbies, reading needs—to the lens class that fits best.
- Model: In-clinic simulations of blended vision or halo patterns to help you preview expected outcomes before surgery.
- Agree: We present 2-3 well-matched options with transparent pros, cons, and expected glasses use—never pushing the most expensive option.
- Optimise: Pre-treat ocular surface issues, apply precision toric planning, deliver expert surgery, and provide thorough aftercare.
- Audit: Continuous tracking of refractive accuracy, visual quality, and patient satisfaction to maintain our high standards.
What to Expect: Recovery Timeline After IOL Surgery
Whether you’re having cataract surgery or RLE, the recovery process is remarkably quick and comfortable.
Typical Recovery Timeline:
- Day 1: Vision begins improving immediately; mild discomfort or grittiness is normal
- Week 1: Most patients return to normal activities; vision continues to stabilize
- 1 Month: Vision largely stabilized; most patients experience significant improvement
- 3-6 Months: Final visual outcome achieved; brain fully adapts to new lens (especially with multifocal/EDOF)
Second eye: Typically performed 1-2 weeks after the first eye for optimal binocular vision.
Post-operative care includes: Eye drops (typically 4 weeks), protective eyewear during sleep (1 week), follow-up appointments at 1 day, 1 week, 1 month, and 3 months.
Hear From Our Patients: Harley Vision Reviews
Our patients consistently share their positive experiences at Harley Vision. Here are a few examples from Trustpilot:
“I recently had bilateral phacoemulsification and Trifocal lens implants done by Mr Bizrah. From start to finish the process was seamless. I was well looked after and I felt confident in Mr Bizrah’s ability to deliver a good result – and he delivered. As an Ophthalmologist myself, I know the pressure I was putting on a colleague asking him to do my eyes, and worse still use a lens he wasn’t familiar with. Nothing fazed him. Now 4 weeks later – I can see 6/5 N5 both eyes. I’ve been operating without any issues. I knew there would be glare and halos but they are worth it for the clarity of vision and spectacle independence.”
– Dr Hove, UK
“I am a consultant surgeon and I needed an important eye operation (cataract). The team at harley vision are exceptional in terms of organisation, communication, efficiency professionalism and overall care. Dr Bizrah is a fantastic doctor and world class ophthalmologist. Outstanding care and result!”
– Dr Alex, UK
“Found all of staff to be very friendly and accommodating like the fact that they knew who I was, called me by my Name when I arrived. As for the treatment got exactly what was said on the tin. Every thing I was told about the treatment and what would happen would unfold as describe, so no surprises. Day of the operation staff where very good, professional and friendly made me feel very relaxed. Already recommending them to others.”
“It’s like magic! I can see…… no more glasses! The journey was seamless. Dr Bizrah not in anyway pushy & explained everything I needed to know. The surgery itself was no problem & not once was I uncomfortable or scared or in any discomfort. Can’t express how happy I am to have unaided sight again!!”
– Sarah, UK
“This is the ultimate experience in ocular precision. Wonderful treatment. Wonderful result. How technology has progressed. Dr Bizrah deserves to receive all the credit he gets.”
– Raymond, UK
Frequently Asked Questions About IOL Lenses
What is the difference between Cataract Surgery and Lens Replacement Surgery (RLE)?
The surgical procedure is identical—both remove your natural lens and replace it with an intraocular lens (IOL). Cataract Surgery is performed when the lens has become cloudy, causing vision problems. RLE (Refractive Lens Exchange), also known as lens replacement surgery, is an elective procedure performed before a cataract forms, specifically to correct presbyopia and achieve freedom from reading glasses. Both procedures use the same premium IOL options.
Are premium IOLs only for cataract patients?
No. All premium IOLs (Increased Range and Full Range lenses) are available for both Cataract Surgery and Refractive Lens Exchange (RLE). Many patients in their 50s and 60s choose RLE to proactively address presbyopia before cataracts develop.
What’s the difference between “Increased Range” and “Full Range” vision?
Increased Range (Premium Monofocal/EDOF) provides clear distance vision plus good computer or arm’s-length vision, but you’ll almost certainly still need readers for fine print. Full Range (Multifocal/Galaxy/Odyssey) corrects vision for all three distances (near, intermediate, far), resulting in minimal or no dependence on glasses for daily tasks.
How does the RayOne Galaxy minimize night-time halos?
The RayOne Galaxy uses a revolutionary non-diffractive spiral optic designed with artificial intelligence. Unlike traditional multifocal lenses that split incoming light (causing halos), the Galaxy creates a smooth, continuous transition of focus, significantly reducing halos and glare.
Will I still need glasses after premium IOL surgery?
It depends on the lens type. Monofocal: Yes, for reading and intermediate tasks. Premium Monofocal/EDOF: Occasionally for fine print or prolonged reading. Full Range lenses (Multifocal/Galaxy/Odyssey): Most patients achieve minimal or no glasses dependence for daily activities, though some may still prefer readers for very small print in low light.
Can IOL lenses be replaced or removed if I’m not happy?
Yes, IOLs can be exchanged, though this is rare (less than 1% of cases). Most adaptation issues resolve within 3-6 months as the brain adjusts to the new optics. At Harley Vision, our comprehensive pre-operative assessment and lens-matching process minimizes the risk of dissatisfaction. We also provide thorough aftercare to optimize your visual outcome.
How long do IOL implants last?
IOL implants are designed to last a lifetime. Unlike natural lenses, artificial IOLs do not develop cataracts or degrade. Once implanted, they provide permanent vision correction without the need for replacement under normal circumstances.
Am I too young or too old for lens replacement surgery?
RLE is typically recommended for patients over 50 who are experiencing presbyopia. There’s no upper age limit—we’ve successfully treated patients well into their 80s and 90s. The key factors are overall eye health and realistic expectations. A comprehensive assessment will determine your suitability.
What is the TECNIS Odyssey lens best for?
The TECNIS Odyssey is ideal for patients seeking maximum spectacle independence across all distances, particularly those with active digital lifestyles. Its InteliLight™ technology optimizes performance in varying light conditions, providing superior contrast sensitivity and reduced visual disturbances compared to traditional multifocals. It’s an excellent choice for patients who need crisp vision for computer work, reading, and distance viewing.
Your Journey to Clearer Vision Starts Here
Choosing the right IOL is a personal decision that impacts your vision for life. At Harley Vision, we’re committed to helping you make an informed choice based on your unique eyes and lifestyle.
What Happens Next?
- Initial Consultation: Discuss your vision goals and lifestyle requirements (30-45 minutes)
- Comprehensive Eye Assessment: Advanced diagnostic testing to build your optical profile
- Personalized Lens Recommendation: We’ll present 2-3 options matched to your needs with clear pros/cons
- Surgery Planning: Once you’ve chosen your lens, we’ll schedule your procedure and provide detailed preparation guidance
- Life-Changing Surgery: State-of-the-art procedure performed by experienced surgeons (15-20 minutes per eye)
- Ongoing Care: Comprehensive aftercare and support throughout your recovery
Related Resources
- Complete Cataract Surgery Guide – Everything you need to know about cataract treatment
- Refractive Lens Exchange (RLE) – Freedom from reading glasses and presbyopia
- Toric IOL Lenses for Astigmatism – Correcting astigmatism during lens surgery
- RayOne Galaxy Lens Technology – Next-generation AI-designed vision correction
- J&J TECNIS Odyssey lens technology – Seamless transition of vision
Ready to Transform Your Vision?
Harley Vision London
Experience clearer, more independent vision with Harley Vision’s expert care
Contact Information:
📍 Location: Central London locations including Harley Street
📞 UK: 0207 030 3181
🌍 International: +44 207 030 3181
📧 Email: [email protected]



















