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Corneal biomechanical properties in eyes with no previous surgery, with previous penetrating keratoplasty and with deep anterior lamellar keratoplasty

  • Clinical Investigation
  • Published:
Japanese Journal of Ophthalmology Aims and scope Submit manuscript

Abstract

Purpose

To compare the biomechanical properties of the cornea in eyes with no previous surgery, with keratoconus with previous penetrating keratoplasty (PK) and with keratoconus with previous deep anterior lamellar keratoplasty (DALK) using the Reichert Ocular Response Analyzer (ORA).

Methods

One hundred twenty eyes of 120 patients were included in this prospective comparative study. Forty eyes were with no previous ocular surgery (group 1), 40 eyes were with previous PK for keratoconus (group 2), and 40 eyes were with previous DALK for keratoconus (group 3). Corneal hysteresis (CH) and the corneal resistance factor (CRF) were measured with ORA.

Results

The CH and CRF values in group 2 were significantly lower than in group 1 and group 3 (p = 0.001). The CH and CRF values were similar in group 1 and group 3. There was no statistically significant difference between group 1 and 3.

Conclusion

Although the post-PK keratoconus cornea has weaker biomechanical properties, post-DALK keratoconus cornea is similar to normal cornea. A cornea weakened by keratoconus can be strengthened with lamellar keratoplasty.

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Authors and Affiliations

  1. Ophthalmology Clinic, Department of Ophthalmology, Haydarpasa Numune Education and Research Hospital, Tibbiye cad. Uskudar, 34668, Istanbul, Turkey

    Banu Torun Acar & Suphi Acar

  2. Ophthalmology Clinic, Erzurum Education and Research Hospital, Erzurum, Turkey

    Mehmet Orcun Akdemir

Authors
  1. Banu Torun Acar
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  2. Mehmet Orcun Akdemir
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  3. Suphi Acar
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Correspondence to Banu Torun Acar.

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Acar, B.T., Akdemir, M.O. & Acar, S. Corneal biomechanical properties in eyes with no previous surgery, with previous penetrating keratoplasty and with deep anterior lamellar keratoplasty. Jpn J Ophthalmol 57, 85–89 (2013). https://doi.org/10.1007/s10384-012-0197-5

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  • DOI: https://doi.org/10.1007/s10384-012-0197-5

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