Flap creation is precise and reliable with 200 kHz laser

Article

Corneal flaps created with a 200 kHz femtosecond laser are safe, reliable and precise in LASIK procedures.

Corneal flaps created with a 200 kHz femtosecond laser are safe, reliable and precise in LASIK procedures, according to a paper in the European Journal of Ophthalmology.

Dr Ramin Khoramnia et al., Department of Ophthalmology, University of Heidelberg, Germany, performed femtosecond laser flap cutting on 36 porcine cadaver eyes using a prototype 200 kHz femtosecond laser.

Eyes were assigned to three thickness groups: 100 µm, 130 µm, or 180 µm cut depth. A micrometer gauge was used to measure the thickness and all flaps underwent histologic evaluation. Flap diameters ranged from 8.0 mm to 9.5 mm and were measured with a sliding calliper.

Mean flap thickness and standard deviation was 96.33±7.45, 134.67±4.96 and 174.59±9.35 for the 100 µm, 130 µm, or 180 µm cut depth, respectively. Mean flap diameter was 8.03±0.15, 8.56±0.10, 9.09±0.10 and 9.54±0.15 for 8.0 mm, 8.5 mm, 9.0 mm and 9.5 mm, respectively.

No complications were recorded and histologic evaluation demonstrated a smooth cut and little to no changes in the structure of the corneal stroma. Morphology and accuracy of the cuts proved to be reliable and precise.

Newsletter

Join ophthalmologists across Europe—sign up for exclusive updates and innovations in surgical techniques and clinical care.

Recent Videos
Christine Curcio, PhD, of the University of Alabama at Birmingham Heersink School of Medicine, shares histology update and revised nomenclature for OCT with Sheryl Stevenson of the Eye Care Network and Ophthalmology Times
SriniVas R. Sadda, MD, FARVO, shares key points from his retina presentation at the International SPECTRALIS Symposium
Robert Sergott, MD, describes fluorescence lifetime imaging ophthalmoscopy (FLIO) and the International SPECTRALIS Symposium – And Beyond (ISS) in Heidelberg, Germany.
Rayaz Malik, MBChB, PhD, a professor of medicine at Weill Cornell Medicine - Qatar, spoke with Ophthalmology Times Europe about his presentation. It's titled "An eye on neurodegenerative diseases: Challenging the dogma" at the International SPECTRALIS Sympsoium. In conversation with Hattie Hayes, Ophthalmology Times Europe
Anat Loewenstein, MD, describes her presentation on remote imaging for age-related macular degeneration and geographic atrophy at the International SPECTRALIS Symposium, in conversation with Hattie Hayes of Ophthalmology Times Europe
Tyson Brunstetter, OD, PhD, a US Navy Aerospace Optometrist at the NASA Johnson Space Center in Houston, Texas, shares key takeaways from his keynote at the International SPECTRALIS Symposium (ISS)
Rayaz Malik, MBChB, PhD, shares his presentation, titled An eye on neurodegenerative diseases: Challenging the dogma, at this year's International SPECTRALIS Symposium
At the Retina World Congress, Siegfried Priglinger, MD, speaks about ensuring the best outcomes for preschool-aged patients
At the 2025 ASCRS meeting, Robert Ang, MD said small aperture IOLs can benefit all patients, especially those with complex corneas or who have undergone previous corneal refractive surgery
Viha Vig, MBChB graduate student at the University of Auckland, New Zealand, discusses her poster presentation on the relationship between mitochondiral disease, Alzheimer disease, and other types of dementia.
© 2025 MJH Life Sciences

All rights reserved.