Clinical Outcomes of Sequential Intrastromal Corneal Ring Segments and an Extended Range of Vision Intraocular Lens Implantation in Patients with Keratoconus and Cataract

Joint Authors

Sánchez-Ávila, Ronald Mauricio
Lisa, Carlos
Alfonso, Jose F.
Madrid-Costa, David
Zaldivar, R.
Fernández-Vega Cueto, A.

Source

Journal of Ophthalmology

Issue

Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-7, 7 p.

Publisher

Hindawi Publishing Corporation

Publication Date

2018-04-19

Country of Publication

Egypt

No. of Pages

7

Main Subjects

Medicine

Abstract EN

Purpose.

To evaluate efficacy, safety, and predictability of sequential Ferrara-type intrastromal corneal ring segments (ICRS) and an extended range of vision intraocular lens (IOL) implantation in patients with keratoconus and cataract.

Methods.

This study comprised patients with keratoconus and cataract that had ICRS implantation followed 6 months later by extended range of vision IOL implantation.

The uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), and residual refractive errors, analysed using vector analysis, were recorded preoperatively, 6 months after ICRS implantation, and 6 months after IOL implantation, respectively.

Results.

The study enrolled 17 eyes (11 patients).

The mean UDVA (logMAR scale) was 1.15 ± 0.67 preoperatively, 0.88 ± 0.69 six months after ICRS implantation (P=0.005), and 0.27 ± 0.18 six months after IOL implantation (P<0.0001).

The CDVA changed from 0.26 ± 0.15 (logMAR) before surgery to 0.17 ± 0.08 six months after Ferrara-type ICRS implantation (P=0.002) and to 0.07 ± 0.06 six months after IOL implantation (P<0.0001).

The spherical equivalent and the refractive cylinder declined steeply after IOL implantation (P<0.001).

The magnitude of depth of focus was 2.60 ± 1.02 D.

There were no statistically significant differences in visual acuity for a defocus range from +0.50 D to −0.50 D (P>0.1).

Conclusion.

Sequential Ferrara-type ICRS and an extended range of vision IOL implantation provided good visual and refractive outcomes, being an effective, safe, and predictable procedure for the treatment of selected cases of patients with keratoconus and cataract.

In addition, this approach provides an increase of tolerance to defocus.

American Psychological Association (APA)

Lisa, Carlos& Zaldivar, R.& Fernández-Vega Cueto, A.& Sánchez-Ávila, Ronald Mauricio& Madrid-Costa, David& Alfonso, Jose F.. 2018. Clinical Outcomes of Sequential Intrastromal Corneal Ring Segments and an Extended Range of Vision Intraocular Lens Implantation in Patients with Keratoconus and Cataract. Journal of Ophthalmology،Vol. 2018, no. 2018, pp.1-7.
https://search.emarefa.net/detail/BIM-1196982

Modern Language Association (MLA)

Lisa, Carlos…[et al.]. Clinical Outcomes of Sequential Intrastromal Corneal Ring Segments and an Extended Range of Vision Intraocular Lens Implantation in Patients with Keratoconus and Cataract. Journal of Ophthalmology No. 2018 (2018), pp.1-7.
https://search.emarefa.net/detail/BIM-1196982

American Medical Association (AMA)

Lisa, Carlos& Zaldivar, R.& Fernández-Vega Cueto, A.& Sánchez-Ávila, Ronald Mauricio& Madrid-Costa, David& Alfonso, Jose F.. Clinical Outcomes of Sequential Intrastromal Corneal Ring Segments and an Extended Range of Vision Intraocular Lens Implantation in Patients with Keratoconus and Cataract. Journal of Ophthalmology. 2018. Vol. 2018, no. 2018, pp.1-7.
https://search.emarefa.net/detail/BIM-1196982

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references

Record ID

BIM-1196982