May 2004
Volume 45, Issue 13
Free
ARVO Annual Meeting Abstract  |   May 2004
The Comparison of Visual and Refractive Changes Following Continuous Suture Removal in Penetrating Keratoplasty Patients with Disparate and Same Graft Size
Author Affiliations & Notes
  • T. Sumi
    Ophthalmology, Tokyo Dental College, Ichikawa, Japan
  • M. Dogru
    Ophthalmology, Tokyo Dental College, Ichikawa, Japan
  • M. Ishioka
    Ophthalmology, Ryogoku Eye Clinic, Tokyo, Japan
  • S. Shimmura
    Ophthalmology, Tokyo Dental College, Ichikawa, Japan
  • J. Shimazaki
    Ophthalmology, Tokyo Dental College, Ichikawa, Japan
  • K. Tsubota
    Ophthalmology, Tokyo Dental College, Ichikawa, Japan
  • Footnotes
    Commercial Relationships  T. Sumi, None; M. Dogru, None; M. Ishioka, None; S. Shimmura, None; J. Shimazaki, None; K. Tsubota, None.
  • Footnotes
    Support  none
Investigative Ophthalmology & Visual Science May 2004, Vol.45, 2917. doi:
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      T. Sumi, M. Dogru, M. Ishioka, S. Shimmura, J. Shimazaki, K. Tsubota; The Comparison of Visual and Refractive Changes Following Continuous Suture Removal in Penetrating Keratoplasty Patients with Disparate and Same Graft Size . Invest. Ophthalmol. Vis. Sci. 2004;45(13):2917.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Abstract: : Purpose:To study the effect of suture removal on visual acuity and refractive changes in penetrating keratoplasty (PK) patients with disparate and same size grafts. Methods:One hundred and ten eyes of 99 patients (25 females, 74 males; mean age: 44.0±21.5years) underwent PK with 10/0 nylon continuous suture. Best corrected visual acuities, keratometry, keratmetric astigmatism and spherical equivalent were measured and recorded preoperatively, 1month,3 and 6 months after surgery, as well as one month after suture removal. The recipient bed size was 7.5 mm in all patients. Patients were divided into three groups according to the differences in graft sizes as: Group1: 7.5mm, Group2: 7.75mm and Group 3: 8.0mm. The differences in keratometry, keratmetric astigmatism, spherical equivalent and best corrected visual acuity, were studied and compared between the groups. Patients with a rejection episode and any complications were excluded from this study. . Results:There were no significant shifts in mean keratometry, keratmetric astigmatism and spherical equivalent were observed in the 3 groups until suture removal. Mean keratometry was significantly higher in group 3 compared to group 1(p<0.01) after suture removal. Group 3 also had a significantly higher astigmatic shift following suture removal(p<0.01). There were no significant differences in relation to spherical equivalent values before and after suture removal in each group(p>0.05). Best corrected visual acuity improved in all groups with suture removal. Conclusion: Oversize grafts were associated with greater topographical and astigmatic changes without a profound impact visual acuity.

Keywords: cornea: clinical science • transplantation • astigmatism 
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