TY - JOUR
T1 - Corneal biomechanical properties in 3 corneal transplantation techniques with a dynamic Scheimpflug analyzer
AU - Maeda, Naoyuki
AU - Ueki, Ryotaro
AU - Fuchihata, Mutsumi
AU - Fujimoto, Hisataka
AU - Koh, Shizuka
AU - Nishida, Kohji
N1 - Funding Information:
Acknowledgments Publication of this article was supported in part by a Grant-in-Aid for Scientific Research (no. 24592669; to Naoyuki Maeda) from the Japanese Ministry of Education, Culture, Sports, Science and Technology. The authors would like to thank Duco Hamasaki, PhD, for the English language review.
Publisher Copyright:
© 2014, Japanese Ophthalmological Society.
PY - 2014/11
Y1 - 2014/11
N2 - Purpose: To compare the corneal biomechanical properties of eyes that have undergone penetrating keratoplasty (PK), deep anterior lamellar keratoplasty (DALK), and Descemet stripping automated endothelial keratoplasty (DSAEK).Methods: This case–control study comprised 20 post-PK eyes, 14 post-DALK eyes, 15 post-DSAEK eyes, and 50 normal control eyes. A dynamic Scheimpflug analyzer (the Corvis ST) was used to evaluate the corneal biomechanical properties including deformation amplitude (DA) and radius at the highest concavity (Rhc).Conclusions: The dynamic Scheimpflug analyzer provides a method to obtain new biomechanical information on the cornea such as the DA and Rhc, and these parameters differed among eyes that had undergone 3 different types of corneal surgery. Abnormalities in these parameters after the different corneal transplantation techniques may indicate larger deviations in the stress–strain reaction of the cornea and more uncertainty in the intraocular pressure measurements than in normal eyes.Results: In post-PK eyes, the mean DA was 1.20 ± 0.13 mm, which was significantly higher than those of the control eyes (1.07 ± 0.09) and the post-DSAEK eyes (1.08 ± 0.12). The DA (1.18 ± 0.18) in the post-DALK eyes was significantly higher than in the control eyes. The Rhc in the post-PK (6.34 ± 0.37 mm), -DALK (6.04 ± 1.22), and -DSAEK (6.44 ± 0.58) eyes was significantly smaller than in the control eyes (7.57 ± 0.78).
AB - Purpose: To compare the corneal biomechanical properties of eyes that have undergone penetrating keratoplasty (PK), deep anterior lamellar keratoplasty (DALK), and Descemet stripping automated endothelial keratoplasty (DSAEK).Methods: This case–control study comprised 20 post-PK eyes, 14 post-DALK eyes, 15 post-DSAEK eyes, and 50 normal control eyes. A dynamic Scheimpflug analyzer (the Corvis ST) was used to evaluate the corneal biomechanical properties including deformation amplitude (DA) and radius at the highest concavity (Rhc).Conclusions: The dynamic Scheimpflug analyzer provides a method to obtain new biomechanical information on the cornea such as the DA and Rhc, and these parameters differed among eyes that had undergone 3 different types of corneal surgery. Abnormalities in these parameters after the different corneal transplantation techniques may indicate larger deviations in the stress–strain reaction of the cornea and more uncertainty in the intraocular pressure measurements than in normal eyes.Results: In post-PK eyes, the mean DA was 1.20 ± 0.13 mm, which was significantly higher than those of the control eyes (1.07 ± 0.09) and the post-DSAEK eyes (1.08 ± 0.12). The DA (1.18 ± 0.18) in the post-DALK eyes was significantly higher than in the control eyes. The Rhc in the post-PK (6.34 ± 0.37 mm), -DALK (6.04 ± 1.22), and -DSAEK (6.44 ± 0.58) eyes was significantly smaller than in the control eyes (7.57 ± 0.78).
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U2 - 10.1007/s10384-014-0344-2
DO - 10.1007/s10384-014-0344-2
M3 - Article
C2 - 25190024
AN - SCOPUS:84920420265
SN - 0021-5155
VL - 58
SP - 483
EP - 489
JO - Japanese Journal of Ophthalmology
JF - Japanese Journal of Ophthalmology
IS - 6
ER -