Corneal ring segments proving their worth

Article

Ferrara corneal rings are a useful tool in the treatment of keratoconus but long-term stability still needs to be established.

Ferrara corneal rings are a useful tool in the treatment of keratoconus but long-term stability still needs to be established, according to Akef El Maghraby and colleagues from the Magrabi Eye and Ear Center, Jeddah, Saudi Arabia.

In a prospective, non-comparative study, 100 corneas with keratoconus were implanted with Ferrara intracorneal ring segments. Uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), spherical equivalent, cylinder power, topographic average K readings and cylinder were measured preoperatively and at one week, one, three, six and nine months postoperatively.

By the first month, all parameters had improved significantly and 92% maintained or improved their BCVA. No case required explantation and neither cone nor the depth of the segments affected the outcomes. Results were stable through the duration of follow-up.

The results suggest that intracorneal ring segments are effective but more long-term follow-up is required to establish stability.

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.