Meditec Mel 80 Excimer Laser: FDA Test Results
Device Trade Name:  MEL 80 Excimer Laser System
Applicant:  Carl Zeiss Meditec Inc, Dublin, California, USA.
Approved By The FDA: August 15, 2006
The Carl Zeiss Meditec MEL 80 Excimer Laser System has been marketed in the following countries: Australia, Austria, Belgium, Canada, Czech Republic, China, Croatia, Denmark, Egypt, Estonia, Finland, France, Germany, India, Iran, Italy, Japan, Kazakhstan, Kuwait, Latvia, Libya, Lithuania, Malaysia, Morocco, Mexico, Netherlands, Oman, Palestine, Portugal, Russia, South Africa, Slovenia, Spain, Switzerland, Thailand, Turkey, United Arab Emirates, and the United Kingdom. The Carl Zeiss Meditec MEL 80 Excimer Laser System has not been withdrawn from marketing for any reason relating to the safety and effectiveness of the device.
The Carl Zeiss Meditec MEL 80 Excimer Laser System is indicated for use in primary Laser Assisted In Situ Keratomileusis (LASIK) for:

*For the reduction or elimination of myopia of less than or equal to -7.0 D with or without refractive astigmatism of less than or equal to -3.0 D;

*In subjects with documentation of stable manifest refraction over the prior year;

*In subjects who are 21 years of age or older.
Summary Of Clinical Studies:
A total of 360 eyes were enrolled in this study.  Effectiveness results are provided for 354 eyes with at least six months of follow-up data.  Safety data are provided for all 360 eyes enrolled in the study. 
A. Study Objective
The objectives of this study was to evaluate the safety and effectiveness of the Meditec MEL 80 Excimer Laser System for the reduction or elimination of myopia of less than or equal to -10.00 D, and astigmatism less than or equal to -3.50 D at the spectacle plane, when used as part of the LASIK surgical procedure.
Patient Symptoms: % Worse At 3 Months: % Worse At 6 Months:
Light Sensitivity 16.6% 13.9%
Headaches 6.2% 5.4%
Pain/Burning 5.3% 4.3%
Dryness 40.7% 27.6%
Excessive Tearing 2.2% 1.7%
Gritty, Scratchy 10.7% 7.4%
Glare 21.1% 16.8%
Halos 24.4% 16.8%
Blurred Vision 17.4% 13.9%
Double Vision 9.0% 4.5%
Fluctuation Of Vision 19.9% 16.2%
Variation-Bright Light 8.7% 10.5%
Variation-Normal Light 7.3% 7.4%
Variation-Dim Light 17.1% 15.3%
Night Driving Vision 21.1% 15.1%
Patient Satisfaction:
Responses provided by the study participants at three and six months to three questions regarding their experiences with the laser surgery are provided at right.  These three questions related to: 1) the perceived overall quality of vision following surgery; 2) the participant's willingness to have the surgery again if he/she could make the choice over; and 3) the participant's overall satisfaction with the results of the surgical procedure.

Self Evaluation:

Overall Vision Quality:
Would Select Refractive Surgery Again:



At 3 Months:

At 6 Months:
No Improvement 0.6% 0.6%
Slight Improvement 1.1%
Moderate Improvement 1.1%
Marked Improvement 14.4%
Extreme Improvement 82.8%
No 1.1% 2.2%
Yes 94.4% 94.4%
Unsure 4.4% 3.4%
Very Satisfied 90.6% 88.8%
Moderately Satisfied 7.8% 8.4%
Neutral 0.6% 1.7%
Dissatisfied 1.1% 0.6%
Very Dissatisfied 0.0% 0.6%
At three months, the overall quality of vision was rated highly, with 99.4% of patients indicating that there was an improvement, while only 0.6% indicated that there was no improvement; 94.4% would elect to have the surgery again; 98.3% reported being satisfied, while 0.6% were neutral and 1.1% were dissatisfied.
Conclusions Drawn From The Clinical Study:

The data in this application provides reasonable assurance that the device is safe and effective when used in accordance with the directions for use.  The FDA issued its approval of the Meditec MEL 80 Excimer Laser System on August 15, 2006.
Meditec Mel 80 Excimer Laser Test FDA Results.
B. Study Design
This was a prospective, multicenter clinical trial in which a total of 360 eyes of consecutive patients at four clinical sites were enrolled, treated with the MEL 80 Excimer Laser, and followed for a six month period.  The pre-treatment condition of the eye was considered the control state for most comparisons.
Results Of The Study:
Adverse events and complications that occurred in the clinical study are shown below:
The demographics for this study are typical for a contemporary refractive surgery trial performed in the U.S. Of the 182 enrolled subjects, 55.5% were male, and 44.5% were female.  Caucasians made up 79.7% of the study participants, Blacks 3.3%, Asian 4.9%, Other 12.1%.  Ages ranged from 21-60 years, with the mean age at 33.5 years.
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