Flap-induced astigmatism in eyes with sphere myopia correction: Superior hinge using a rotating microkeratome versus nasal hinge using a linear microkeratome

Toam Katz; Andreas Frings; Gisbert Richard; Johannes Steinberg; Vasyl Druchkiv; Stephan J Linke

doi:10.1016/j.jcrs.2014.08.044

Flap-induced astigmatism in eyes with sphere myopia correction: Superior hinge using a rotating microkeratome versus nasal hinge using a linear microkeratome

Standard

Flap-induced astigmatism in eyes with sphere myopia correction: Superior hinge using a rotating microkeratome versus nasal hinge using a linear microkeratome. / Katz, Toam; Frings, Andreas; Richard, Gisbert; Steinberg, Johannes; Druchkiv, Vasyl; Linke, Stephan J.

In: J CATARACT REFR SURG, Vol. 41, No. 6, 06.2015, p. 1160-7.

Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

Harvard

Katz, T, Frings, A, Richard, G, Steinberg, J, Druchkiv, V & Linke, SJ 2015, 'Flap-induced astigmatism in eyes with sphere myopia correction: Superior hinge using a rotating microkeratome versus nasal hinge using a linear microkeratome', J CATARACT REFR SURG, vol. 41, no. 6, pp. 1160-7. https://doi.org/10.1016/j.jcrs.2014.08.044

APA

Katz, T., Frings, A., Richard, G., Steinberg, J., Druchkiv, V., & Linke, S. J. (2015). Flap-induced astigmatism in eyes with sphere myopia correction: Superior hinge using a rotating microkeratome versus nasal hinge using a linear microkeratome. J CATARACT REFR SURG, 41(6), 1160-7. https://doi.org/10.1016/j.jcrs.2014.08.044

Vancouver

Katz T, Frings A, Richard G, Steinberg J, Druchkiv V, Linke SJ. Flap-induced astigmatism in eyes with sphere myopia correction: Superior hinge using a rotating microkeratome versus nasal hinge using a linear microkeratome. J CATARACT REFR SURG. 2015 Jun;41(6):1160-7. https://doi.org/10.1016/j.jcrs.2014.08.044

Bibtex

@article{e47bca2b4d494f77b1fd22588f2fe9be,

title = "Flap-induced astigmatism in eyes with sphere myopia correction: Superior hinge using a rotating microkeratome versus nasal hinge using a linear microkeratome",

abstract = "PURPOSE: To compare the effect of a rotating microkeratome (M2) and a linear microkeratome (SBK) on the change in the astigmatic component in eyes with preoperative plano refractive cylinder.SETTING: University Medical Centre Hamburg-Eppendorf, Hamburg, Germany.DESIGN: Retrospective case series.METHODS: An Allegretto excimer laser was used to perform laser ablation in myopic eyes of consecutive patients. The laser in situ keratomileusis (LASIK) procedure included mechanical flap preparation using a microkeratome, either a linear type with a single-use 90 μm head to create a nasal hinge or a rotating type with a single-use 90 μm head to create a superior hinge. The Alpins vector method was applied to describe the effects of LASIK on postoperative refractive cylinder.RESULTS: The study evaluated 1045 eyes of 852 patients. Although the mean overall efficacy and safety indices indicate the procedure was highly precise, safe, and efficient, there were statistically significant differences in surgically induced astigmatism (SIA) between the microkeratomes (P = .002). The postoperative refractive cylinder (ie, SIA) was 0.75 diopter (D) or more in 116 eyes (11.1%), 44 (12.8%) of 344 linear cases and 72 (10.3%) of 701 rotating cases. Independent of the type of microkeratome used, the SIA was slightly higher in eyes treated first; the mean magnitude of the induced astigmatism was 0.35 D.CONCLUSIONS: In approximately 10% of eyes with preoperative plano refractive myopia, the astigmatic component tended to be overcorrected. Nevertheless, independent of the type of microkeratome, the maximum mean magnitude of refractive cylinder documented was 0.35 D.FINANCIAL DISCLOSURE: No author has a financial or proprietary interest in any material or method mentioned.",

author = "Toam Katz and Andreas Frings and Gisbert Richard and Johannes Steinberg and Vasyl Druchkiv and Linke, {Stephan J}",

year = "2015",

month = jun,

doi = "10.1016/j.jcrs.2014.08.044",

language = "English",

volume = "41",

pages = "1160--7",

journal = "J CATARACT REFR SURG",

issn = "0886-3350",

publisher = "Elsevier Inc.",

number = "6",

}

RIS

TY - JOUR

T1 - Flap-induced astigmatism in eyes with sphere myopia correction: Superior hinge using a rotating microkeratome versus nasal hinge using a linear microkeratome

AU - Katz, Toam

AU - Frings, Andreas

AU - Richard, Gisbert

AU - Steinberg, Johannes

AU - Druchkiv, Vasyl

AU - Linke, Stephan J

PY - 2015/6

Y1 - 2015/6

N2 - PURPOSE: To compare the effect of a rotating microkeratome (M2) and a linear microkeratome (SBK) on the change in the astigmatic component in eyes with preoperative plano refractive cylinder.SETTING: University Medical Centre Hamburg-Eppendorf, Hamburg, Germany.DESIGN: Retrospective case series.METHODS: An Allegretto excimer laser was used to perform laser ablation in myopic eyes of consecutive patients. The laser in situ keratomileusis (LASIK) procedure included mechanical flap preparation using a microkeratome, either a linear type with a single-use 90 μm head to create a nasal hinge or a rotating type with a single-use 90 μm head to create a superior hinge. The Alpins vector method was applied to describe the effects of LASIK on postoperative refractive cylinder.RESULTS: The study evaluated 1045 eyes of 852 patients. Although the mean overall efficacy and safety indices indicate the procedure was highly precise, safe, and efficient, there were statistically significant differences in surgically induced astigmatism (SIA) between the microkeratomes (P = .002). The postoperative refractive cylinder (ie, SIA) was 0.75 diopter (D) or more in 116 eyes (11.1%), 44 (12.8%) of 344 linear cases and 72 (10.3%) of 701 rotating cases. Independent of the type of microkeratome used, the SIA was slightly higher in eyes treated first; the mean magnitude of the induced astigmatism was 0.35 D.CONCLUSIONS: In approximately 10% of eyes with preoperative plano refractive myopia, the astigmatic component tended to be overcorrected. Nevertheless, independent of the type of microkeratome, the maximum mean magnitude of refractive cylinder documented was 0.35 D.FINANCIAL DISCLOSURE: No author has a financial or proprietary interest in any material or method mentioned.

AB - PURPOSE: To compare the effect of a rotating microkeratome (M2) and a linear microkeratome (SBK) on the change in the astigmatic component in eyes with preoperative plano refractive cylinder.SETTING: University Medical Centre Hamburg-Eppendorf, Hamburg, Germany.DESIGN: Retrospective case series.METHODS: An Allegretto excimer laser was used to perform laser ablation in myopic eyes of consecutive patients. The laser in situ keratomileusis (LASIK) procedure included mechanical flap preparation using a microkeratome, either a linear type with a single-use 90 μm head to create a nasal hinge or a rotating type with a single-use 90 μm head to create a superior hinge. The Alpins vector method was applied to describe the effects of LASIK on postoperative refractive cylinder.RESULTS: The study evaluated 1045 eyes of 852 patients. Although the mean overall efficacy and safety indices indicate the procedure was highly precise, safe, and efficient, there were statistically significant differences in surgically induced astigmatism (SIA) between the microkeratomes (P = .002). The postoperative refractive cylinder (ie, SIA) was 0.75 diopter (D) or more in 116 eyes (11.1%), 44 (12.8%) of 344 linear cases and 72 (10.3%) of 701 rotating cases. Independent of the type of microkeratome used, the SIA was slightly higher in eyes treated first; the mean magnitude of the induced astigmatism was 0.35 D.CONCLUSIONS: In approximately 10% of eyes with preoperative plano refractive myopia, the astigmatic component tended to be overcorrected. Nevertheless, independent of the type of microkeratome, the maximum mean magnitude of refractive cylinder documented was 0.35 D.FINANCIAL DISCLOSURE: No author has a financial or proprietary interest in any material or method mentioned.

U2 - 10.1016/j.jcrs.2014.08.044

DO - 10.1016/j.jcrs.2014.08.044

M3 - SCORING: Journal article

C2 - 26189377

VL - 41

SP - 1160

EP - 1167

JO - J CATARACT REFR SURG

JF - J CATARACT REFR SURG

SN - 0886-3350

IS - 6

ER -