TY - JOUR
T1 - Effect of excisional goniotomy with the kahook dual blade (Kdb) on surgically induced astigmatism
AU - Hirabayashi, Matthew
AU - Virdi, Gurpal
AU - King, Joshua
AU - Lee, Dayeong
AU - Nguyen, Van
AU - An, Jella
N1 - Publisher Copyright:
© 2020 Hirabayashi et al.
PY - 2020
Y1 - 2020
N2 - Purpose: To determine the effect of Kahook Dual Blade goniotomy with phacoemulsifica-tion (Phaco-KDB) compared to phacoemulsification alone (Phaco) on surgically induced astigmatism (SIA). Design: Prospective study. Participants: Forty eyes of 28 patients treated with Phaco-KDB and 20 eyes of 13 patients treated with Phaco between 12/27/16 and 7/23/19 with a minimum 1 month follow-up were prospectively enrolled. Methods: Corneal astigmatism was assessed pre-and post-operatively using the simulated K (simK) values from the Pentacam Holladay report. Main Outcome Measures: SIA was compared between Phaco-KDB and Phaco groups using mean magnitude SIA, rate of ≥0.50 D SIA, and SIA centroids. Results: The difference in mean magnitude SIA was not statistically significant between Phaco-KDB and Phaco (mean = 0.28 D and 0.25 D, respectively, P = 0.621). The difference in the rate of ≥0.50 D SIA was not statistically significant between Phaco-KDB and Phaco (11.6% and 10.0%, respectively, P = 1.00). The SIA centroid for Phaco-KDB was 0.05 D @ 51° ± 0.40 D and 0.07 D @ 3° ± 0.32 D for Phaco. Conclusion: Neither the mean magnitude SIA nor the rate of astigmatic change ≥0.50 D was significantly different between Phaco-KDB and Phaco groups. SIA centroids between groups showed comparable and negligible effect on corneal astigmatism. KDB combined with phacoemulsification may not significantly affect SIA compared to phacoemulsification alone based on postoperative topography and is likely an astigmatically neutral procedure.
AB - Purpose: To determine the effect of Kahook Dual Blade goniotomy with phacoemulsifica-tion (Phaco-KDB) compared to phacoemulsification alone (Phaco) on surgically induced astigmatism (SIA). Design: Prospective study. Participants: Forty eyes of 28 patients treated with Phaco-KDB and 20 eyes of 13 patients treated with Phaco between 12/27/16 and 7/23/19 with a minimum 1 month follow-up were prospectively enrolled. Methods: Corneal astigmatism was assessed pre-and post-operatively using the simulated K (simK) values from the Pentacam Holladay report. Main Outcome Measures: SIA was compared between Phaco-KDB and Phaco groups using mean magnitude SIA, rate of ≥0.50 D SIA, and SIA centroids. Results: The difference in mean magnitude SIA was not statistically significant between Phaco-KDB and Phaco (mean = 0.28 D and 0.25 D, respectively, P = 0.621). The difference in the rate of ≥0.50 D SIA was not statistically significant between Phaco-KDB and Phaco (11.6% and 10.0%, respectively, P = 1.00). The SIA centroid for Phaco-KDB was 0.05 D @ 51° ± 0.40 D and 0.07 D @ 3° ± 0.32 D for Phaco. Conclusion: Neither the mean magnitude SIA nor the rate of astigmatic change ≥0.50 D was significantly different between Phaco-KDB and Phaco groups. SIA centroids between groups showed comparable and negligible effect on corneal astigmatism. KDB combined with phacoemulsification may not significantly affect SIA compared to phacoemulsification alone based on postoperative topography and is likely an astigmatically neutral procedure.
KW - Astigmatism
KW - KDB
KW - MIGS
KW - Surgically induced astigmatism
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U2 - 10.2147/OPTH.S279073
DO - 10.2147/OPTH.S279073
M3 - Article
AN - SCOPUS:85097674817
SN - 1177-5467
VL - 14
SP - 4297
EP - 4303
JO - Clinical Ophthalmology
JF - Clinical Ophthalmology
ER -