Measures More
INNOVEYES SightMap captures multiple measurements of the eye, including information about the cornea, wavefront, and internal optical structures.
WaveLight Plus LASIK
Modern LASIK at Zhu Vision
WaveLight Plus LASIK in Orange County
A new level of personalized laser vision correction, designed around the unique optical system of your eyes.
Dr. Dagny Zhu is among a select group of U.S. refractive surgeons offering WaveLight Plus LASIK.
The most advanced form of laser vision correction today—Wavelight Plus offers personalized laser vision correction, designed around the unique optical system of your eyes, delivering more “better than 20/20 vision” than ever before.
Harvard
Medical School
Bascom Palmer
Cornea & Refractive Fellowship
Board-Certified
Ophthalmologist
Zhu Vision
Founder & Medical Director
Personalized Vision Correction
LASIK Designed Around Your Eyes
Your eyes are not identical to anyone else’s. WaveLight Plus moves beyond treatment planning based primarily on a glasses prescription by analyzing the complete optical system of your eye.
Models Your Eye
Ray-tracing technology uses detailed measurements to create a three-dimensional Digital Eye Twin representing how light travels through your individual optical system.
Personalizes Treatment
The system creates and virtually evaluates a customized treatment profile before your personalized laser correction is delivered.
How WaveLight Plus Works
Measure. Personalize. Deliver.
WaveLight Plus combines advanced diagnostics, optical ray tracing, and precise laser treatment planning into one highly individualized process.
1
Measure
Build Your Digital Eye Twin
SightMap evaluates the optical system using multiple measurements rather than relying on a prescription measurement alone.
2
Personalize
Virtually Plan Your Treatment
Ray tracing models how light travels through your eye and helps create a treatment profile tailored to your individual optical anatomy.
3
Deliver
Perform Your Customized LASIK
The personalized correction is delivered using the WaveLight laser platform with the goal of precise refractive correction and high-quality vision.
Beyond a Prescription
Why a Digital Eye Twin Matters
A traditional vision prescription describes nearsightedness and astigmatism, but the optical system of the eye is more complex than a glasses prescription alone.
WaveLight Plus measures and models additional optical characteristics that may influence visual quality.
Its ray-tracing system calculates how light travels through the eye and uses that information to develop a personalized treatment profile.
WaveLight Plus evaluates:
- ✓ Ocular wavefront measurements
- ✓ Anterior corneal shape
- ✓ Posterior corneal information
- ✓ Corneal thickness
- ✓ Anterior chamber depth
- ✓ Lens position
- ✓ Axial length of the eye
Inside the Digital Eye Twin
From Detailed Measurements to a Virtual Model of Your Eye
The Digital Eye Twin is not simply a picture of the eye. INNOVEYES™ SightMap gathers multiple types of diagnostic information about the optical system and combines those measurements with ray-tracing software to build a three-dimensional model used for personalized treatment planning.
Anterior Eye Imaging
Scheimpflug imaging captures detailed information about the front of the eye, including the cornea, pupil, anterior chamber, and crystalline lens.
Axial Eye Dimensions
Coherence interferometry provides axial measurements that help define the geometry and dimensions of the eye as part of the complete optical model.
Wavefront Aberrations
Hartmann-Shack wavefront technology measures optical aberrations that are not fully described by a standard glasses prescription alone.
Virtual Ray-Tracing Plan
The combined measurements are used to model how light travels through your eye. The personalized treatment profile can then be designed and virtually evaluated before laser delivery.
Why This Level of Detail Matters
Going Beyond Sphere and Cylinder
WaveLight Plus is designed to account for subtle optical imperfections including higher-order aberrations. These complex imperfections may influence visual quality and can be associated with symptoms such as nighttime halos, starbursts, or double vision. Unlike Contoura LASIK which treats only irregularities on the front surface of the eye, Wavelight Plus customizes treatment to the entire optical system of the eye. Treating these aberrations allows for a more individualized laser treatment plan that gives the highest chance of achieving better than 20/20 vision and reducing nighttime symptoms.
Modern LASIK
WaveLight Plus vs. Basic Traditional LASIK
Both approaches use laser technology to correct refractive error. WaveLight Plus adds a deeper level of individualized measurement and treatment planning.
| Feature | Basic traditional LASIK | WaveLight Plus |
|---|---|---|
| Prescription-based correction | Yes | Yes |
| Multiple optical measurements | Limited | Comprehensive |
| 3D Digital Eye Twin | — | ✓ |
| Optical ray-tracing planning | — | ✓ |
| Higher-order optical characteristics | Not specifically | ✓ |
| Virtual treatment optimization | — | ✓ |
Published WaveLight Plus Data
Vision Beyond the Traditional 20/20 Benchmark
Studies referenced by Alcon have reported high levels of visual acuity following WaveLight Plus treatment.
Visual-acuity results above are published WaveLight Plus data referenced by Alcon and are not Zhu Vision-specific outcomes. The 99% satisfaction figure is from a referenced clinical study using PROWL questionnaire responses at 3 months post-op (n=106). Individual results vary and no specific visual outcome can be guaranteed.
Treatment Day & Early Recovery
What Patients Often Want to Know About WaveLight Plus
The customized treatment profile is only one part of the LASIK experience. Your surgeon will explain the complete procedure, comfort measures, recovery plan, medications, and follow-up schedule based on your individual eyes.
Laser Treatment in Seconds
Alcon reports that the WaveLight® EX500 Excimer Laser can perform the personalized laser treatment in just a few seconds per eye for typical myopia treatment parameters. Your total procedure and appointment time will be longer.
Designed for Comfort
The WaveLight Plus treatment uses a cool ultraviolet excimer laser. Numbing eye drops are used as part of the procedure to help keep patients comfortable. Your surgeon will review the complete surgical steps with you before treatment.
Vision Can Change Early
Alcon notes that some patients may begin noticing visual changes from the first day. Vision can continue to fluctuate or improve as the eyes heal, so follow-up care and adherence to post-operative instructions remain important.
Your Refractive Surgeon
Advanced Technology in Experienced Hands
Dagny Zhu, M.D.
Cornea, Cataract & Refractive Surgeon
Founder & Medical Director, Zhu Vision
Dr. Dagny Zhu is a Harvard-trained, board-certified ophthalmologist who completed ophthalmology residency training at USC/Doheny Eye Institute and fellowship training in cornea and refractive surgery at the renowned Bascom Palmer Eye Institute.
Her clinical career has focused on advanced laser vision correction, refractive surgery, cataract surgery, premium lens technology, and emerging ophthalmic innovation.
At Zhu Vision, advanced technology supports — rather than replaces — surgical judgment. Dr. Zhu evaluates each patient’s eyes, visual goals, anatomy, and lifestyle before recommending WaveLight Plus or another vision-correction option.
Harvard Medical School
Bascom Palmer Eye Institute
Board-Certified Ophthalmologist
Cornea & Refractive Fellowship
Meet Dr. Dagny Zhu →
Is It Right for You?
Who May Be a Candidate for WaveLight Plus?
Candidacy can only be determined after a comprehensive refractive evaluation.
Your prescription, corneal shape, ocular health, visual goals, and other clinical factors must be evaluated before treatment can be recommended.
You may be evaluated if you:
- ✓ Are 18 years of age or older
- ✓ Have had a stable vision prescription
- ✓ Have nearsightedness with or without qualifying astigmatism
- ✓ Have healthy corneas appropriate for laser vision correction
- ✓ Want to reduce dependence on glasses or contact lenses
- ✓ Are interested in personalized LASIK treatment planning
WHY DR. ZHU CHOSE IT
Why Dr. Zhu Chose WaveLight Plus for Her Own Eyes
When an ophthalmologist chooses laser vision correction for herself, the technology matters. Dr. Dagny Zhu chose WaveLight Plus for her own eyes because of its highly personalized approach to vision correction and its ability to account for more of the eye’s unique optical characteristics.
Her personal decision reflects the same philosophy she brings to every patient: use advanced technology, detailed measurements, and individualized treatment planning to help achieve the best possible visual outcome.
Schedule a ConsultationYour Experience
What to Expect at Zhu Vision
Comprehensive Consultation
We evaluate your prescription, corneal health, eye anatomy, and visual goals.
Advanced Diagnostic Measurements
If appropriate, detailed measurements are used to build your individualized optical model.
Personalized Recommendation
Dr. Zhu reviews your results and determines whether WaveLight Plus is appropriate for your eyes and lifestyle.
Your LASIK Procedure
If you proceed, your customized treatment is delivered using the WaveLight platform.
Frequently Asked Questions
WaveLight Plus LASIK FAQ
What is WaveLight Plus LASIK? +
WaveLight Plus is a personalized LASIK treatment approach that combines detailed optical measurements with ray-tracing technology to create a three-dimensional Digital Eye Twin and individualized treatment plan.
How is WaveLight Plus different from traditional LASIK? +
WaveLight Plus adds detailed optical measurements, three-dimensional modeling, and ray-tracing-based planning to create a treatment profile based on the individual optical characteristics of your eye.
What is a Digital Eye Twin? +
A Digital Eye Twin is a three-dimensional virtual representation created from detailed measurements of your eye. It helps model how light travels through your individual optical system.
Can WaveLight Plus provide better than 20/20 vision? +
Some patients in studies referenced by Alcon achieved visual acuity better than 20/20. Individual outcomes vary, and no specific visual result can be guaranteed.
Is everyone a candidate for WaveLight Plus? +
No. LASIK is not appropriate for every patient. Corneal shape and thickness, prescription, ocular health, prescription stability, age, and other factors must be evaluated.
Why choose Dr. Dagny Zhu for WaveLight Plus LASIK? +
Dr. Zhu is a Harvard-trained, board-certified ophthalmologist and Bascom Palmer fellowship-trained cornea and refractive surgeon whose clinical work focuses on modern laser vision correction and advanced ophthalmic technology.
More About the Technology
Digital Eye Twin & WaveLight Plus Questions
What technology is used to build the Digital Eye Twin? +
INNOVEYES™ SightMap combines several types of measurements. According to Alcon’s product information, the system can use Scheimpflug imaging for the anterior segment, coherence interferometry for axial dimensions, and Hartmann-Shack wavefront technology to measure optical aberrations. These data help create the individualized optical model used for treatment planning.
Does the Digital Eye Twin copy the entire eye exactly? +
It is better understood as a three-dimensional optical model built from detailed diagnostic measurements. The purpose is to represent how light travels through your individual optical system so the treatment profile can be personalized and virtually evaluated before delivery.
What are higher-order aberrations? +
Higher-order aberrations are more complex optical imperfections than the nearsightedness or astigmatism described by a routine glasses prescription. They can influence quality of vision and may contribute to effects such as halos, starbursts, or double vision. WaveLight Plus measures optical aberrations so they can be considered in personalized treatment planning.
How long does the WaveLight Plus laser treatment take? +
Alcon states that the WaveLight® EX500 Excimer Laser can deliver the personalized treatment in just a few seconds per eye under typical myopia treatment parameters. This refers to laser treatment time, not the full LASIK visit or total surgical time.
When might I notice a change in my vision? +
Some patients may notice changes as early as the first day, but healing and visual recovery are individual. Vision can fluctuate during recovery, and your surgeon will give you specific post-operative instructions and follow-up recommendations.
What conditions is WaveLight Plus intended to treat? +
In the United States, Alcon’s product information describes WaveLight Plus treatment with the WaveLight EX500 and INNOVEYES SightMap for qualifying adults with myopia or myopia with astigmatism who meet the labeled prescription and stability criteria. A refractive evaluation is required to determine whether your eyes fall within the approved treatment range and whether LASIK is appropriate for you.
Live Life in Focus
Discover Whether WaveLight Plus Is Right for Your Eyes
Your vision is personal. Your LASIK treatment should be too.
Zhu Vision
1010 W La Veta Ave, Suite 615
Orange, CA 92868