Repository of Research and Investigative Information

Repository of Research and Investigative Information

Baqiyatallah University of Medical Sciences

Pre-operative factors influencing post-operative outcomes from MyoRing implantation in keratoconus

(2019) Pre-operative factors influencing post-operative outcomes from MyoRing implantation in keratoconus. Clinical and Experimental Optometry. pp. 394-398. ISSN 0816-4622

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Abstract

Background To identify pre-operative factors that influence post-operative performance of a full-ring intra-corneal implant (MyoRing) for the management of keratoconus. Method In a retrospective study, medical records of 70 keratoconus eyes of 70 consecutive surgical patients with a mean age of 28.54 +/- 6.52 years, who underwent MyoRing implantation using the PocketMaker microkeratome (Dioptex GmbH), were included and analysed before implantation and for visual outcome. Variables assessed included age, gender, keratoconus shape, uncorrected distance visual acuity, corrected distance visual acuity, spherical equivalent and keratometry reading. After the last follow-up, the eyes were graded for MyoRing implantation performance into worst, moderate and best subgroups. Results The mean values of uncorrected distance visual acuity, corrected distance visual acuity, spherical equivalent, manifest sphere and cylinder improved significantly post-operatively (p < 0.05). A statistically significant difference was found in the mean spherical equivalent (p = 0.046) and uncorrected distance visual acuity (p = 0.001) between moderate and best subgroups. No statistically significant correlation was found between age, sex, keratoconus shape, keratometric values, corrected distance visual acuity and visual outcome. Conclusions According to this new grading system for MyoRing implantation performance, pre-operative uncorrected distance visual acuity and spherical equivalent are considered as the most important indicators for surgical performance in MyoRing treatment of keratoconus.

Item Type: Article
Keywords: cornea intrastromal corneal ring keratoconus MyoRing performance index intracorneal ring segments corneal ring keratoplasty management disease pocket Ophthalmology
Divisions:
Page Range: pp. 394-398
Journal or Publication Title: Clinical and Experimental Optometry
Journal Index: ISI
Volume: 102
Number: 4
Identification Number: https://doi.org/10.1111/cxo.12859
ISSN: 0816-4622
Depositing User: مهندس مهدی شریفی
URI: http://eprints.bmsu.ac.ir/id/eprint/2493

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