We treated Keratoconus
patient, Steve Wozniak,
and saved his vision!

Keratoconus – Case Study

Keratoconus is the progressive degeneration and weakening of the structure of the cornea – the clear tissue that covers the front of the eye. Keratoconus symptoms affect everyday tasks like driving, watching television and reading. Patients with severe Keratoconus may barely achieve 20/200 vision even with glasses or contacts. In the past, this patient would likely require a corneal transplant to restore vision. This is a lengthy surgery with a moderate success rate, yearlong healing course and a potentially uncomfortable hard contact lens requirement.

Steve Wozniak -- Apple co-founder

Steve Wozniak
Apple co-founder

Patient Information and Diagnosis

  • Steve Wozniak had LASIK in 2000 when he was 49 years old.
  • After LASIK, he enjoyed 20/20 distance vision for about 8 years
  • In 2008, the vision in his right eye was found to be about 20/50. He was diagnosed with Ectasia, a rare form of Keratoconus.
  • By 2013, his right eye had deteriorated to 20/400 and his Ectasia had worsened. His vision could now only be corrected to 20/60 with glasses.
  • Stability of vision for 3 years

Keratoconus Treatment Recommendation and Procedure

Instead of a corneal transplant, I recommended three simultaneous procedures:

  • Corneal Cross Linking saturates the cornea with Vitamin B2 and exposes it to ultraviolet light. This causes the collagen to cross-link with adjacent collagen molecules, strengthening the cornea and preventing further deterioration.
  • Intacs, an FDA-approved plastic segment, are inserted into the cornea. This segment flattens the cornea thereby reducing nearsightedness.
  • Conductive Keratoplasty reshapes the cornea to reduce the astigmatism.


Steve was treated in April 2013. Two weeks after the procedure, his vision had improved from 20/400 (uncorrected) and 20/60 (uncorrected), to 20/30 (with glasses)!

Steve talks about his experience

Dr. Furlong and Steve WozniakWhy did you choose this treatment?
I chose this because I got a good recommendation and explanation from Dr. Furlong —  a doctor I trust. He also explained why it was a good idea and why my vision might get worse if I didn’t have the surgery.

How would you describe the overall experience?
Easy. It was very similar to having had LASIK. I had full confidence in the doctor and I was fully conscious during the procedure. Enjoyable. My wife enjoyed watching.

How would you describe your results?
Excellent. The recovery was longer than with LASIK, but I was prepared for that. It actually exceeded my expectations. I still would have been happy if my results were less than what they are.

With the advent of the recent FDA approval of a single treatment system and protocol, Dr. Furlong is not offering Corneal Cross Linking (CXL) at this time. He is researching several alternative treatment protocols that are being evaluated for patient comfort, recovery time and efficacy. Dr. Furlong will continue to examine and diagnose Keratoconus patients and offer Conductive Keratoplasty (CK) and Intacs treatments for those patients who will benefit from these procedures and will resume CXL treatment once he determines which protocol offers the best outcome and safety.

Leah F.
San Francisco, CA


Gotta pay my overdue Yelp gratitude here. Furlong has an all-star staff. Carol specifically is a wonderful human being and professional. They're prepared for every possible scenario. My story varies slightly from others in that I did experience bad halos/glares for roughly 2 weeks following surgery (which is...

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Matt C.
Fullerton, CA


Dr. Furlong was a recommendation from my optometrist. My first visit was fast and easy. My optometrist had already done my dilation so they just needed to take measurements and double check that I was a candidate. Everyone was very professional and friendly. I was nervous about everything but my patient counselor...

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Shilpi R.
Sunnyvale, CA


I recently had LASIK done with Dr. Furlong and it was an amazing experience. I wanted to have LASIK so that I could wake up first thing in the morning and not worry about contacts or glasses! As an optometrist myself I knew the ins and outs a little bit more but everything was on point! Their waiting room is always...

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Gabriel N.
Union City, CA


This has easily been one of the best decisions I have made in my life. After having glasses for most of my life, it's crazy to think I can now wake up and see clearly. I was referred here by my optometrist, Dr. Toy, in early 2016. I came for the free consultation where Dr. Furlong and his staff determined that I...

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Randy M.
San Jose, CA


Five stars.  Why?  I was suffering from rapidly progressing cataracts at the relatively young age of 37.  I was forced to take time off of work until the first surgery was complete.  My left eye had deteriorated from 20/300 in January to "hand motion (I could see light differences and movement only)" the day...

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Himi A.
Fremont, CA


My lasik surgery experience at the center was fabulous! The staff is very friendly, customer service is great! Interaction with Dr. Furlong was directly in the surgery room. Everything was very smooth and the location is super hygienic and has the top technology.

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Betty M.
San Francisco, CA


Just got my lasik surgery done last week by Dr. Furlong, and so far so good! I got referred to Dr. Furlong from my optometrist. A little pricier than competitors, but it's YOUR EYES, not the situation to be looking for a discount. They take a lot of time to make sure that you're comfortable and informed, and the...

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Jennifer H.
Fremont, CA


One of the best decisions I've made in my life! It took me about 2 years before I actually made a decision and not to sound super corny or anything... I should've done it sooner! It's definitely easier saying that knowing my LASIK surgery went well so I completely understand anyone's fear or hesitation with...

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A S.
Sunnyvale, CA


My mom had cataract surgery with with Furlong Vision this past month. It was a smooth experience.  She had one eye done first, followed by the second eye a few weeks later.  She saw Dr. Furlong for consultation in June.  He gave her a detailed exam and performed various scans.  She decided to go with femto laser...

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Leigh B.
Half Moon Bay, CA


Dr.Furlong did PRK for my insanely farsighted eyes in September 2016. I am now seeing 20/20!!! I couldn't be happier with the results. I also appreciated that he was honest when he didn't recommend PRK for my thin corneas... better safe than sorry! Thanks again, best money I could have spent on myself.

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Mike B.
Santa Cruz, CA


I rarely write reviews on Yelp, but for something as important as LASIK, I did a lot of research & visited several places in Silicon Valley. I recommend you do too! You get what you pay for...don't budget on your eyes! You want the best technology & an experienced & personable  Doctor. Dr. Furlong is...

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Yee L.
Palo Alto, CA


Super thorough and professional.  The staff accurately explained exactly what to expect and answered all my questions in an even-handed way with lots of detail about risks and benefits.

Theres no guarantee of results, but turns out my vision was corrected to better than 20/20 and I'm very happy with the results.

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Best Place for LASIK in Silicon ValleyVoted Best LASIK Doctor by Santa Cruz Good TimesTwice named a Premiere Cataract Surgeon by Ocular Surgery NewsSponsor of Santa Clara County Optometric SocietyJefferson Award - the "Nobel Prize" for community and public service for the Furlong Vision Correction Gift of Sight programOfficial laser vision correction and eye surgeon and Legacy Partner of the San Jose Earthquakes