TY - JOUR
T1 - IntraLase-Enabled Astigmatic Keratotomy for Postkeratoplasty Astigmatism
AU - Bahar, Irit
AU - Levinger, Eliya
AU - Kaiserman, Igor
AU - Sansanayudh, Wiwan
AU - Rootman, David S.
N1 - Funding Information:
This study was supported by IntraLase Inc, Irvine, California. Dr Bahar is a recipient of fellowship funding from the Schwartz Reisman Foundation. Involved in design and conduct of study (I.B., E.L., I.K., W.S., D.S.R); collection (E.L., I.B.), management (I.K., E.L., W.S., D.S.R.), analysis (I.K.), and interpretation (I.K., E.L., I.B., D.S.R.) of the data; and preparation (I.K., I.B.), review (D.S.R.), or approval of the manuscript (I.B., I.K., E.L., W.S., D.S.R.). This study was approved by the Toronto University Health Network Review Ethics Board (access retrospective data). The study was conducted in accordance with the tenets of the Declaration of Helsinki.
PY - 2008/12
Y1 - 2008/12
N2 - Purpose: To report on the outcomes of IntraLase-enabled astigmatic keratotomy (IEAK) and to compare it with manual astigmatic keratotomy (AK) for the management of postkeratoplasty astigmatism. Design: Retrospective, comparative case series. Methods: Forty eyes of 39 patients treated at a cornea clinic at the Toronto Western Hospital were included. Twenty eyes underwent manual AK and 20 eyes underwent IEAK. The main outcome measures included preoperative and postoperative manifest refraction, uncorrected and best-corrected visual acuity (UCVA, BCVA), corneal topography, high-order ocular aberrations, and complications. Results: In the manual AK group, UCVA (logarithm of the minimum angle of resolution) improved from 1.08 ± 0.29 before surgery to 0.93 ± 0.45 after surgery (P = .09), and in the IEAK group, UCVA improved from 1.14 ± 0.42 before surgery to 0.82 ± 0.44 after the procedure (P = .004). BCVA improved from 0.63 ± 0.40 to 0.44 ± 0.38 (manual AK; P = .16) and from 0.52 ± 0.38 to 0.29 ± 0.26 (IEAK; P = .01), respectively. Mean cylinder reduction was 3.23 ± 4.69 diopters in the manual AK group and 4.26 ± 1.72 diopters in the IEAK group (P = .36). Two eyes in each group lost one line of BCVA. Three patients (15%) in the manual AK group had corneal perforation and required resuturing of the AK wound (P = .23) Overcorrection occurred at a similar rate in the two groups. Conclusions: Treatment of postkeratoplasty astigmatism with IntraLase is a safe and effective surgical procedure and resulted in a significant improvement in UCVA and BCVA compared with manual AK. A larger sample series is needed to refine further this new technique of AK and to compare it with accepted manual techniques.
AB - Purpose: To report on the outcomes of IntraLase-enabled astigmatic keratotomy (IEAK) and to compare it with manual astigmatic keratotomy (AK) for the management of postkeratoplasty astigmatism. Design: Retrospective, comparative case series. Methods: Forty eyes of 39 patients treated at a cornea clinic at the Toronto Western Hospital were included. Twenty eyes underwent manual AK and 20 eyes underwent IEAK. The main outcome measures included preoperative and postoperative manifest refraction, uncorrected and best-corrected visual acuity (UCVA, BCVA), corneal topography, high-order ocular aberrations, and complications. Results: In the manual AK group, UCVA (logarithm of the minimum angle of resolution) improved from 1.08 ± 0.29 before surgery to 0.93 ± 0.45 after surgery (P = .09), and in the IEAK group, UCVA improved from 1.14 ± 0.42 before surgery to 0.82 ± 0.44 after the procedure (P = .004). BCVA improved from 0.63 ± 0.40 to 0.44 ± 0.38 (manual AK; P = .16) and from 0.52 ± 0.38 to 0.29 ± 0.26 (IEAK; P = .01), respectively. Mean cylinder reduction was 3.23 ± 4.69 diopters in the manual AK group and 4.26 ± 1.72 diopters in the IEAK group (P = .36). Two eyes in each group lost one line of BCVA. Three patients (15%) in the manual AK group had corneal perforation and required resuturing of the AK wound (P = .23) Overcorrection occurred at a similar rate in the two groups. Conclusions: Treatment of postkeratoplasty astigmatism with IntraLase is a safe and effective surgical procedure and resulted in a significant improvement in UCVA and BCVA compared with manual AK. A larger sample series is needed to refine further this new technique of AK and to compare it with accepted manual techniques.
UR - http://www.scopus.com/inward/record.url?scp=56549114289&partnerID=8YFLogxK
U2 - 10.1016/j.ajo.2008.07.004
DO - 10.1016/j.ajo.2008.07.004
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C2 - 18760767
AN - SCOPUS:56549114289
SN - 0002-9394
VL - 146
SP - 897-904.e1
JO - American Journal of Ophthalmology
JF - American Journal of Ophthalmology
IS - 6
ER -