• Users Online: 268
  • Home
  • Print this page
  • Email this page
Home Current issue Ahead of print Search About us Abstracting and Indexing Editorial board Archives Submit article Instructions Subscribe Contacts Login 
ORIGINAL ARTICLE
Year : 2018  |  Volume : 13  |  Issue : 4  |  Page : 376-382

Visual and refractive outcomes and tomographic changes after femtosecond laser-assisted intrastromal corneal ring segment implantation in patients with keratoconus


1 Eye Research Center, Rassoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
2 Iranian Eye Clinic, Tehran, Iran
3 School of Pharmacy, International Campus, Tehran University of Medical Sciences, Tehran, Iran
4 Shahid Beheshti University of Medical Sciences, Tehran, Iran

Correspondence Address:
Seyed Javad Hashemian
Eye Research Center, Rassoul Akram Hospital, Iran University of Medical Sciences, No. 86, 10th Boostan St., Pasdaran Ave., Tehran 16667
Iran
Login to access the Email id

Source of Support: None, Conflict of Interest: None


DOI: 10.4103/jovr.jovr_42_17

Rights and Permissions

Purpose: To evaluate the visual, refractive, and tomography changes after femtosecond laser-assisted intrastromal corneal ring segment (ICRS; Intacs® SK) implantation in patients with keratoconus. Methods: In this prospective interventional case series, Intacs SK ICRSs were inserted using a femtosecond laser into eyes with stage I–IV keratoconus. Visual, refractive, and corneal tomography changes, along with surgical complications, were analyzed 1 week, 2 months, and 6 months postoperatively. Results: The study evaluated 71 eyes of 52 patients (mean age: 27.5 years). Six months postoperatively, the spherical equivalent, mean sphere, and mean cylinder were decreased by 2.07, 1.47, and 1.13 diopters (D), respectively. The mean preoperative uncorrected distance visual acuity (UDVA) increased from 0.87 ± 0.26 to 0.46 ± 0.19 LogMAR and the mean preoperative corrected distance visual acuity (CDVA) increased from 0.55 ± 0.21 to 0.28 ± 0.17 LogMAR (P < 0.001). Flat and steep keratometry decreased by a mean corneal power in the 3-mm zone, and mean anterior elevation decreased by 0.91 D, 2.52 D, and 1.03 microns (P < 0.001), respectively. Among all eyes, 93.0% gained one or more lines of CDVA. Mean internal anterior chamber depth decreased from 3.25 ± 0.33 to 3.14 ± 0.45 mm (P = 0.001), and mean irregularity in the 3-mm zone decreased from 5.63 ± 1.71 to 5.24 ± 1.82 (P = 0.006). However, mean posterior elevation and irregularity in the 5-mm zone did not change significantly. Conclusion: Implantation of one or two Intacs SK segments is safe and effective to treat keratoconus, leading to significant improvement in UDVA, CDVA, and refractive error.


[FULL TEXT] [PDF]*
Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)
 

 Article Access Statistics
    Viewed834    
    Printed93    
    Emailed0    
    PDF Downloaded183    
    Comments [Add]    

Recommend this journal