|
مقاله
|
Abstract
|
|
|
|
Title:
|
Intracorneal ring segment depth in keratoconus patients: a long-term follow-up study
|
|
Author(s):
|
Saied Shahhoseini MD1, Hassan Hashemi MD2, Soheila Asgari PhD3
|
|
Presentation Type:
|
Oral
|
|
Subject:
|
Cornea and Anterior Segment
|
|
Others:
|
|
|
Presenting Author:
|
|
|
Name:
|
Saeid Shahhosseini
|
|
Affiliation :(optional)
|
Noor Ophthalmology Research Center, Noor Eye Hospital, Tehran, Iran, Noor Research Center for Ophthalmic Epidemiology, Noor Eye Hospital, Tehran, Iran. Department of Epidemiology and Biostatist
|
|
E mail:
|
sshahhoseini@noorvision.com
|
|
Phone:
|
77643720
|
|
Mobile:
|
09123793350
|
|
|
|
|
Purpose:
|
To compare the actual depth of the tunnel created with femtosecond laser for intracorneal ring segment (ICRS) implantation with the target depth in keratoconus patients.
|
|
Methods:
|
This mix design study included 30 eyes of 30 keratoconus patients who had ICRS implantation at least 6 months prior to study. Participants underwent anterior segment optical coherence tomography using Spectralis (Heidelberg Engineering GmbH, Heidelberg, Germany) for measurement of anterior corneal surface to anterior rim of the ring.
|
|
Results:
|
The mean age of the participants was 31.4 ± 7.9 years, and 58.6% were male. Mean follow-up time after ring implantation was 25.8 ± 10.0 (range, 7 to 41) months. Mean actual depth was 59.9% (42.4% to 86.8%) and the target depth was 85.0% (74.8% to 90.0%) (P<0.001). The ring was at a depth of less than 70% in 25 eyes of the 30 (83.3%) studied eyes.
|
|
Conclusion:
|
At two years after implantation, ring segments are placed at a shallower depth than originally intended. Therefore, although femtosecond laser technology is an acceptable method for the surgeon, it is necessary to revisit the depth calculator of the device.
Key words: Intracorneal ring segment; Femtosecond laser; Anterior OCT; Actual depth
|
|
Attachment:
|
|
|
|