Clinical Outcomes After Implantation of 320°-Arc Length Intrastromal Corneal Ring Segments in Keratoconus

被引：29

作者：

Torquetti, Leonardo ^{[1
]}

Cunha, Priscila ^{[2
]}

Luz, Allan ^{[3
]}

Kwitko, Sergio ^{[4
]}

Carrion, Marcio ^{[5
]}

Rocha, Guilherme ^{[6
]}

Signorelli, Armando ^{[7
]}

Coscarelli, Sandro ^{[8
]}

Ferrara, Guilherme ^{[9
]}

Bicalho, Frederico ^{[2
]}

Neves, Renato ^{[10
]}

Ferrara, Paulo ^{[9
]}

机构：

[1] Ctr Excellence Ophthalmol, Para De Minas, Brazil

[2] HC UFMG, Hosp Sao Geraldo, Belo Horizonte, MG, Brazil

[3] Hosp Olhos Sergipe, Aracaju, Brazil

[4] Oftalmocentro, Porto Alegre, RS, Brazil

[5] Carr Eye Clin, Santo Angelo, Brazil

[6] Hosp Olhos Brasilia, Brasilia, DF, Brazil

[7] Ctr Campineiro Microcirurgia Ocular, Campinas, SP, Brazil

[8] Ennio Coscarelli Eye Clin, Belo Horizonte, MG, Brazil

[9] Paulo Ferrara Eye Clin, Belo Horizonte, MG, Brazil

[10] EyeCare, Sao Paulo, Brazil

来源：

CORNEA | 2018年 / 37卷 / 10期

关键词：

Ferrara ring; keratoconus; intrastromal ring segments; 320-ICRS; TERM-FOLLOW-UP; FEMTOSECOND LASER; INTRAOCULAR-LENS; INTACS; SINGLE;

D O I：

10.1097/ICO.0000000000001709

中图分类号：

R77 [眼科学];

学科分类号：

100212 ;

摘要：

Purpose:To evaluate the clinical outcomes after implantation of a new 320 degrees-arc length Ferrara intrastromal corneal ring segment (320-ICRS) in eyes of patients with keratoconus.Methods:A multicentric nonrandomized study was conducted in which a new 320-ICRS was placed in 138 eyes of 130 patients with keratoconus. Uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), keratometry, corneal volume, asphericity, lines of vision gain/loss, and vectorial analysis were assessed preoperatively and at the final follow-up visit after the procedure.Results:The mean follow-up time was 6.2 3.3 (SD) months (range 3-12 months). Mean UDVA improved from 20/250 to 20/60. Mean CDVA improved from 20/100 to 20/40. Mean Q improved from -1.12 +/- 0.49 preoperatively to -0.28 +/- 0.51 postoperatively (P < 0.001). Mean corneal volume increased from 56.2 +/- 4.28 mm(3) preoperatively to 57.6 +/- 4.74 postoperatively (P < 0.001). Mean Km reduced from 53.3 +/- 5.5 D preoperatively to 47.8 +/- 4.6 D postoperatively (P < 0.001). The change in UDVA, CDVA, and topographic astigmatism was statistically significant (P < 0.0001).Conclusions:The 320-ICRS can efficiently and safely improve visual acuity in keratoconus, modifying the corneal shape to a more physiologic, aspheric shape.

引用

页码：1299 / 1305

页数：7

共 25 条

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