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Japanese Journal of Ophthalmology

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01-01-2013 | Clinical Investigation

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

Authors: Banu Torun Acar, Mehmet Orcun Akdemir, Suphi Acar

Published in: Japanese Journal of Ophthalmology | Issue 1/2013

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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Title: Corneal biomechanical properties in eyes with no previous surgery, with previous penetrating keratoplasty and with deep anterior lamellar keratoplasty
Authors: Banu Torun Acar
Mehmet Orcun Akdemir
Suphi Acar
Publication date: 01-01-2013
Publisher: Springer Japan
Published in: Japanese Journal of Ophthalmology / Issue 1/2013
Print ISSN: 0021-5155
Electronic ISSN: 1613-2246
DOI: https://doi.org/10.1007/s10384-012-0197-5

Keynote webinar | Spotlight on medication adherence

Springer Medicine

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

Abstract

Purpose

Methods

Results

Conclusion

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusion

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