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U.S. Department of Health and Human Services

MAUDE Adverse Event Report: VISXSTAR LASER

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VISX STAR LASER   Back to Search Results
Event Date 08/20/2001
Event Type  Injury   Patient Outcome  Required Intervention
Event Description

In 2001, i had lasik, first on one eye and then on the other eye one week later, at a clinic. I have struggled with dry eye ever since, ranging from mildly to severely annoying. Despite having tried punctal plugs, daily hot compresses, and doxycycline therapy, my meibomian glands have never returned to normal function. Of course, i have since learned this is considered a 'minor' lasik 'side effect', most likely due to the permanent nerve damage wrought by the microkeratome -hansatome- and excimer laser -visx- devices your agency has approved for medically unnecessary purposes. I observed my first floaters--signs of a posterior vitreous detachment--within weeks of the lasik surgery - reported september 2001. This i have learned is due to the high pressure caused by the suction ring used with the microkeratome, which your agency has approved for medically unnecessary purposes. I noticed double vision symptoms, especially at night, soon after the surgery. I was relieved in 2002 that i was able to get a prescription that seemed to relieve these symptoms. However, over the next several years, i went in for several more prescriptions, each proving a bit less satisfactory than the last. Finally, in 2007, i was diagnosed with post-lasik ectasia, as my corneal topographies showed the trademark sign of inferior steepening, which accounted for my increasing cylinder and increasing symptoms of double/multiple vision. I have thick corneas, had stable refraction for 2 years, and measurements of flap thickness with an artemis device showed no signs of a too-deep flap thickness. In other words, i was a 'perfect' candidate, whose preoperative topography -which showed ~0. 5 d of inferior steepening- would probably not be turned away today despite the new 'stricter' guidelines being suggested. The reality of course, is that nobody is a good candidate to have their corneal strength weakened by a third by a microkeratome, for no medically indicated purpose. However, this butchery remains approved by your agency. The reality is that keratoconus remains poorly understood. At this point, i'm still -barely- correctable to 20/20, so by some accounts i'm 'normal', despite the fact that one can see 20/20 -or 20/16- with significant irregular astigmatism that is anything but 'normal'. This has been known in the keratoconus literature for years. Yet your agency continues to employ outdated visual acuity measurements as the 'clinical outcome' measurement for approving devices. This is convenient for the doctors, especially so because '20/20' has been popularly misunderstood as 'perfect' vision, when it is anything but. In the last several years, i have read with interest about 'wavefront-guided' treatments, with an interest in reducing my irregular astigmatism. I have been shocked and appalled to see that devices marketed as being effective in reducing higher-order aberrations have actually shown no data to this effect, whatsoever. In fact, they merely reduce the amount of induced higher-order aberrations. They have reduced hoas in patients with initially high levels, but the reductions have been small. It's shocking that devices known to increase higher-order aberrations / on average/ are approved for general use. Should not people be warned that their hoas--their quality of vision--/ will/ be reduced? -though maybe not enough that they'll notice or care. Now i am considering a topography-guided ablation, as this is the only approach that has some track record of consistently reducing irregular astigmatism and hoas by significant amounts. Indeed, several doctors in another country have now several cases of improving forme fruste keratoconus patients' best-corrected vision. However, your agency has not seen fit to at least give humanitarian approval to the laser refractive surgery devices that /do/ have a record in reducing irregular astigmatism -e. G. The suite from ivis technologies and/or the topography-guided options from wavelight-, which is a legitimate medical purpose for refractive surgery. This of course would not be lasik, but rather surface ablation. It is unclear why lasik remains approved today despite the mounting evidence that surface ablation is much safer biomechanically. So i will have to leave this country, and visit another country instead, to have a chance to improve my vision and likely also do corneal collagen crosslinking, which was kept a well-hidden secret from us patients -frequently along with their ectasia/keratoconus condition itself, as doctors frequently don't diagnose what they can't effectively treat- for many years, by your agency. Ironically, i have been funded. In the past, during my phd work. I work as an optical engineer, developing adaptive laser scanning systems for neuroscience research. I've developed a cutting edge system, and might well have moved towards consideration for future funding, including the pioneer award. Of course, now it's difficult to work in the dark, so my scientific career prospects are significantly diminished. I am able to work for now under private funding. So, do consider that your agency's behavior has not only been reckless, but counterproductive. Dates of use: 2001. Diagnosis or reason for use: nominally a 'disease' called myopia.

 
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Brand NameSTAR LASER
Type of DeviceLASER
Manufacturer (Section F)
VISX
Manufacturer (Section D)
VISX
Device Event Key1021843
MDR Report Key1052221
Event Key1010372
Report NumberMW5007039
Device Sequence Number1
Product CodeLZS
Report Source Voluntary
Reporter Occupation BIOMEDICAL ENGINEER
Type of Report Initial
Report Date 05/25/2008
2 DeviceS WERE Involved in the Event:1 2 
1 Patient Was Involved in the Event
Date FDA Received05/25/2008
Is This An Adverse Event Report? No
Is This A Product Problem Report? Yes
Device Operator Health Professional
Was Device Available For Evaluation? No
Is The Reporter A Health Professional? No
Was the Report Sent to FDA? No
Was The Report Sent To Manufacturer? No
Is the Device an Implant? No
Is this an Explanted Device?

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