Clinical Outcomes of Femtosecond Laser-assisted Implantation of 325-Degree Versus 340-Degree Arc Length Intracorneal Ring Segments in Naive Keratoconic Eyes
Abstract Purpose: To evaluate and compare clinical outcomes after femtosecond laser-assisted implantation of 325-degree versus 340-degree arc length intracorneal ring segments (ICRS) in eyes with keratoconus (KCN). Methods: In this prospective non-randomized interventional case series, 23 eyes of 21...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Knowledge E
2023-11-01
|
| Series: | Journal of Ophthalmic & Vision Research |
| Subjects: | |
| Online Access: | https://doi.org/10.18502/jovr.v18i4.14545 |
| _version_ | 1797361065003057152 |
|---|---|
| author | Amir Faramarzi Kiana Hassanpour Marjan Mazouchi Bahram Einollahi Sepehr Feizi Hamed Esfandiari Mohammad-Mehdi Sadoughi Majid Moshirfar |
| author_facet | Amir Faramarzi Kiana Hassanpour Marjan Mazouchi Bahram Einollahi Sepehr Feizi Hamed Esfandiari Mohammad-Mehdi Sadoughi Majid Moshirfar |
| author_sort | Amir Faramarzi |
| collection | DOAJ |
| description | Abstract Purpose: To evaluate and compare clinical outcomes after femtosecond laser-assisted implantation of 325-degree versus 340-degree arc length intracorneal ring segments (ICRS) in eyes with keratoconus (KCN). Methods: In this prospective non-randomized interventional case series, 23 eyes of 21 patients diagnosed with KCN, underwent femtosecond laser-assisted implantation of two types of ICRS, which included a 325-degree ICRS (Group 325) and a 340-degree ICRS (Group 340). The primary outcome measures were uncorrected distance visual acuity (UDVA), and the secondary outcome measures included corrected distance visual acuity (CDVA), sphere, cylinder, mean refractive spherical equivalent (MRSE), keratometry, vectorial change in corneal astigmatism, and the location of maximum keratometry relative to the corneal apex. The study groups were compared using the primary and secondary outcome measures obtained at postoperative months six and 12. Results: Groups 325 and 340 consisted of 10 and 13 eyes, respectively. The two groups were comparable in terms of parameters measured preoperatively. On comparison to the baseline values, both study groups exhibited a significant increase in UDVA and CDVA measured at postoperative month six (Ps < 0.05) and a significant decrease in the sphere, cylinder, spherical equivalent refraction, and keratometry readings measured at postoperative months six and 12 (Ps < 0.05). No significant differences were observed between the two groups in terms of visual, refractive, and keratometric outcomes at any time point. No intraoperative or postoperative complications were observed in any of the study groups. Conclusion: Both the 325-degree ICRS and the 340-degree ICRS effectively and equally improved visual, refractive, and keratometric outcomes in keratoconic eyes. |
| first_indexed | 2024-03-08T15:48:35Z |
| format | Article |
| id | doaj.art-3e442a48a0da43f884949dda30c1909c |
| institution | Directory Open Access Journal |
| issn | 2008-2010 2008-322X |
| language | English |
| last_indexed | 2024-03-08T15:48:35Z |
| publishDate | 2023-11-01 |
| publisher | Knowledge E |
| record_format | Article |
| series | Journal of Ophthalmic & Vision Research |
| spelling | doaj.art-3e442a48a0da43f884949dda30c1909c2024-01-09T07:54:41ZengKnowledge EJournal of Ophthalmic & Vision Research2008-20102008-322X2023-11-0118436937810.18502/jovr.v18i4.14545jovr.v18i4.14545Clinical Outcomes of Femtosecond Laser-assisted Implantation of 325-Degree Versus 340-Degree Arc Length Intracorneal Ring Segments in Naive Keratoconic EyesAmir Faramarzi0Kiana Hassanpour1Marjan Mazouchi2Bahram Einollahi3Sepehr Feizi4Hamed Esfandiari5Mohammad-Mehdi Sadoughi6Majid Moshirfar7 Ophthalmic Research Center, Research Institute for Ophthalmology and Vision Science, Shahid Beheshti University of Medical Sciences, Tehran, Iran Ophthalmic Research Center, Research Institute for Ophthalmology and Vision Science, Shahid Beheshti University of Medical Sciences, Tehran, Iran Ophthalmic Research Center, Research Institute for Ophthalmology and Vision Science, Shahid Beheshti University of Medical Sciences, Tehran, Iran Department of Ophthalmology, Labbafinejad Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran Ophthalmic Research Center, Research Institute for Ophthalmology and Vision Science, Shahid Beheshti University of Medical Sciences, Tehran, Iran Department of Ophthalmology, Northwestern University Feinberg School of Medicine, Chicago, USA Ophthalmic Research Center, Research Institute for Ophthalmology and Vision Science, Shahid Beheshti University of Medical Sciences, Tehran, Iran John A. Moran Eye Center, Department of Ophthalmology and Visual Sciences, Salt Lake City, UT, USAAbstract Purpose: To evaluate and compare clinical outcomes after femtosecond laser-assisted implantation of 325-degree versus 340-degree arc length intracorneal ring segments (ICRS) in eyes with keratoconus (KCN). Methods: In this prospective non-randomized interventional case series, 23 eyes of 21 patients diagnosed with KCN, underwent femtosecond laser-assisted implantation of two types of ICRS, which included a 325-degree ICRS (Group 325) and a 340-degree ICRS (Group 340). The primary outcome measures were uncorrected distance visual acuity (UDVA), and the secondary outcome measures included corrected distance visual acuity (CDVA), sphere, cylinder, mean refractive spherical equivalent (MRSE), keratometry, vectorial change in corneal astigmatism, and the location of maximum keratometry relative to the corneal apex. The study groups were compared using the primary and secondary outcome measures obtained at postoperative months six and 12. Results: Groups 325 and 340 consisted of 10 and 13 eyes, respectively. The two groups were comparable in terms of parameters measured preoperatively. On comparison to the baseline values, both study groups exhibited a significant increase in UDVA and CDVA measured at postoperative month six (Ps < 0.05) and a significant decrease in the sphere, cylinder, spherical equivalent refraction, and keratometry readings measured at postoperative months six and 12 (Ps < 0.05). No significant differences were observed between the two groups in terms of visual, refractive, and keratometric outcomes at any time point. No intraoperative or postoperative complications were observed in any of the study groups. Conclusion: Both the 325-degree ICRS and the 340-degree ICRS effectively and equally improved visual, refractive, and keratometric outcomes in keratoconic eyes.https://doi.org/10.18502/jovr.v18i4.14545intrastromal corneal ring segmentkeratoconusfemtosecond laser |
| spellingShingle | Amir Faramarzi Kiana Hassanpour Marjan Mazouchi Bahram Einollahi Sepehr Feizi Hamed Esfandiari Mohammad-Mehdi Sadoughi Majid Moshirfar Clinical Outcomes of Femtosecond Laser-assisted Implantation of 325-Degree Versus 340-Degree Arc Length Intracorneal Ring Segments in Naive Keratoconic Eyes Journal of Ophthalmic & Vision Research intrastromal corneal ring segment keratoconus femtosecond laser |
| title | Clinical Outcomes of Femtosecond Laser-assisted Implantation of 325-Degree Versus 340-Degree Arc Length Intracorneal Ring Segments in Naive Keratoconic Eyes |
| title_full | Clinical Outcomes of Femtosecond Laser-assisted Implantation of 325-Degree Versus 340-Degree Arc Length Intracorneal Ring Segments in Naive Keratoconic Eyes |
| title_fullStr | Clinical Outcomes of Femtosecond Laser-assisted Implantation of 325-Degree Versus 340-Degree Arc Length Intracorneal Ring Segments in Naive Keratoconic Eyes |
| title_full_unstemmed | Clinical Outcomes of Femtosecond Laser-assisted Implantation of 325-Degree Versus 340-Degree Arc Length Intracorneal Ring Segments in Naive Keratoconic Eyes |
| title_short | Clinical Outcomes of Femtosecond Laser-assisted Implantation of 325-Degree Versus 340-Degree Arc Length Intracorneal Ring Segments in Naive Keratoconic Eyes |
| title_sort | clinical outcomes of femtosecond laser assisted implantation of 325 degree versus 340 degree arc length intracorneal ring segments in naive keratoconic eyes |
| topic | intrastromal corneal ring segment keratoconus femtosecond laser |
| url | https://doi.org/10.18502/jovr.v18i4.14545 |
| work_keys_str_mv | AT amirfaramarzi clinicaloutcomesoffemtosecondlaserassistedimplantationof325degreeversus340degreearclengthintracornealringsegmentsinnaivekeratoconiceyes AT kianahassanpour clinicaloutcomesoffemtosecondlaserassistedimplantationof325degreeversus340degreearclengthintracornealringsegmentsinnaivekeratoconiceyes AT marjanmazouchi clinicaloutcomesoffemtosecondlaserassistedimplantationof325degreeversus340degreearclengthintracornealringsegmentsinnaivekeratoconiceyes AT bahrameinollahi clinicaloutcomesoffemtosecondlaserassistedimplantationof325degreeversus340degreearclengthintracornealringsegmentsinnaivekeratoconiceyes AT sepehrfeizi clinicaloutcomesoffemtosecondlaserassistedimplantationof325degreeversus340degreearclengthintracornealringsegmentsinnaivekeratoconiceyes AT hamedesfandiari clinicaloutcomesoffemtosecondlaserassistedimplantationof325degreeversus340degreearclengthintracornealringsegmentsinnaivekeratoconiceyes AT mohammadmehdisadoughi clinicaloutcomesoffemtosecondlaserassistedimplantationof325degreeversus340degreearclengthintracornealringsegmentsinnaivekeratoconiceyes AT majidmoshirfar clinicaloutcomesoffemtosecondlaserassistedimplantationof325degreeversus340degreearclengthintracornealringsegmentsinnaivekeratoconiceyes |