Analysis of excimer laser treatment outcomes and corresponding angle κ in hyperopic astigmatism

Andreas Frings; Vasyl Druchkiv; Lumi Pose; Stephan J Linke; Johannes Steinberg; Toam Katz

doi:10.1016/j.jcrs.2019.01.030

Analysis of excimer laser treatment outcomes and corresponding angle κ in hyperopic astigmatism

Standard

Analysis of excimer laser treatment outcomes and corresponding angle κ in hyperopic astigmatism. / Frings, Andreas; Druchkiv, Vasyl; Pose, Lumi; Linke, Stephan J; Steinberg, Johannes; Katz, Toam.

in: J CATARACT REFR SURG, Jahrgang 45, Nr. 7, 07.2019, S. 952-958.

Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung

Harvard

Frings, A, Druchkiv, V, Pose, L, Linke, SJ, Steinberg, J & Katz, T 2019, 'Analysis of excimer laser treatment outcomes and corresponding angle κ in hyperopic astigmatism', J CATARACT REFR SURG, Jg. 45, Nr. 7, S. 952-958. https://doi.org/10.1016/j.jcrs.2019.01.030

APA

Frings, A., Druchkiv, V., Pose, L., Linke, S. J., Steinberg, J., & Katz, T. (2019). Analysis of excimer laser treatment outcomes and corresponding angle κ in hyperopic astigmatism. J CATARACT REFR SURG, 45(7), 952-958. https://doi.org/10.1016/j.jcrs.2019.01.030

Vancouver

Frings A, Druchkiv V, Pose L, Linke SJ, Steinberg J, Katz T. Analysis of excimer laser treatment outcomes and corresponding angle κ in hyperopic astigmatism. J CATARACT REFR SURG. 2019 Jul;45(7):952-958. https://doi.org/10.1016/j.jcrs.2019.01.030

Bibtex

@article{6904d83ca1d94120a75f3e32c9dd3c2d,

title = "Analysis of excimer laser treatment outcomes and corresponding angle κ in hyperopic astigmatism",

abstract = "PURPOSE: To investigate the prevalence of preoperative, intraoperative, and postoperative angle κ in hyperopic eyes and its effect on the refractive outcomes of excimer laser vision correction.SETTING: University Hospital Hamburg and Care Vision Refractive Centers, Germany.DESIGN: Retrospective multicenter study.METHODS: Hyperopic patients after laser in situ keratomileusis and before retreatment because of hyperopic regression were included. Three treatment groups were defined based on the magnitude of preoperative angle κ defined as low (<0.25 mm), moderate (0.25 to 0.50 mm), or high (>0.50 mm).RESULTS: The study analyzed 170 hyperopic eyes of 112 patients (mean age 29.8 years ± 10.04 [SD], range 21 to 62 years). The preoperative angle κ was low, moderate, or high in 23, 49, and 98 cases, respectively. In eyes with a preoperative angle κ of 0.25 mm or more, changes in the x-axes and y-axes of angle κ and its magnitude were statistically significant (P < .05) between preoperative and intraoperative measurements. In these eyes, intraoperative angle κ (offset) was statistically significantly smaller (P < .05), and Purkinje images were statistically significantly more caudal (P < .001). Treatment predictability was independent from using preoperative or intraoperative angle κ, and there were no statistically significant differences in efficacy or safety.CONCLUSIONS: A preoperative magnitude of angle κ as high as 0.50 mm or higher was present in more than 50% of regressed hyperopic eyes. Measuring angle κ preoperatively did not reflect its real-time intraoperative magnitude. Using the preoperatively larger angle κ as an intraoperative offset might result in a too nasally centered ablation that causes topographic and optical drawbacks; therefore, centering the ablation based on the intraoperative measured offset is recommended.",

keywords = "Adult, Astigmatism/physiopathology, Cornea/pathology, Corneal Topography, Female, Humans, Hyperopia/physiopathology, Keratomileusis, Laser In Situ/methods, Male, Middle Aged, Refraction, Ocular/physiology, Retrospective Studies, Treatment Outcome, Visual Acuity, Young Adult",

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

year = "2019",

month = jul,

doi = "10.1016/j.jcrs.2019.01.030",

language = "English",

volume = "45",

pages = "952--958",

journal = "J CATARACT REFR SURG",

issn = "0886-3350",

publisher = "Elsevier Inc.",

number = "7",

}

RIS

TY - JOUR

T1 - Analysis of excimer laser treatment outcomes and corresponding angle κ in hyperopic astigmatism

AU - Frings, Andreas

AU - Druchkiv, Vasyl

AU - Pose, Lumi

AU - Linke, Stephan J

AU - Steinberg, Johannes

AU - Katz, Toam

PY - 2019/7

Y1 - 2019/7

N2 - PURPOSE: To investigate the prevalence of preoperative, intraoperative, and postoperative angle κ in hyperopic eyes and its effect on the refractive outcomes of excimer laser vision correction.SETTING: University Hospital Hamburg and Care Vision Refractive Centers, Germany.DESIGN: Retrospective multicenter study.METHODS: Hyperopic patients after laser in situ keratomileusis and before retreatment because of hyperopic regression were included. Three treatment groups were defined based on the magnitude of preoperative angle κ defined as low (<0.25 mm), moderate (0.25 to 0.50 mm), or high (>0.50 mm).RESULTS: The study analyzed 170 hyperopic eyes of 112 patients (mean age 29.8 years ± 10.04 [SD], range 21 to 62 years). The preoperative angle κ was low, moderate, or high in 23, 49, and 98 cases, respectively. In eyes with a preoperative angle κ of 0.25 mm or more, changes in the x-axes and y-axes of angle κ and its magnitude were statistically significant (P < .05) between preoperative and intraoperative measurements. In these eyes, intraoperative angle κ (offset) was statistically significantly smaller (P < .05), and Purkinje images were statistically significantly more caudal (P < .001). Treatment predictability was independent from using preoperative or intraoperative angle κ, and there were no statistically significant differences in efficacy or safety.CONCLUSIONS: A preoperative magnitude of angle κ as high as 0.50 mm or higher was present in more than 50% of regressed hyperopic eyes. Measuring angle κ preoperatively did not reflect its real-time intraoperative magnitude. Using the preoperatively larger angle κ as an intraoperative offset might result in a too nasally centered ablation that causes topographic and optical drawbacks; therefore, centering the ablation based on the intraoperative measured offset is recommended.

AB - PURPOSE: To investigate the prevalence of preoperative, intraoperative, and postoperative angle κ in hyperopic eyes and its effect on the refractive outcomes of excimer laser vision correction.SETTING: University Hospital Hamburg and Care Vision Refractive Centers, Germany.DESIGN: Retrospective multicenter study.METHODS: Hyperopic patients after laser in situ keratomileusis and before retreatment because of hyperopic regression were included. Three treatment groups were defined based on the magnitude of preoperative angle κ defined as low (<0.25 mm), moderate (0.25 to 0.50 mm), or high (>0.50 mm).RESULTS: The study analyzed 170 hyperopic eyes of 112 patients (mean age 29.8 years ± 10.04 [SD], range 21 to 62 years). The preoperative angle κ was low, moderate, or high in 23, 49, and 98 cases, respectively. In eyes with a preoperative angle κ of 0.25 mm or more, changes in the x-axes and y-axes of angle κ and its magnitude were statistically significant (P < .05) between preoperative and intraoperative measurements. In these eyes, intraoperative angle κ (offset) was statistically significantly smaller (P < .05), and Purkinje images were statistically significantly more caudal (P < .001). Treatment predictability was independent from using preoperative or intraoperative angle κ, and there were no statistically significant differences in efficacy or safety.CONCLUSIONS: A preoperative magnitude of angle κ as high as 0.50 mm or higher was present in more than 50% of regressed hyperopic eyes. Measuring angle κ preoperatively did not reflect its real-time intraoperative magnitude. Using the preoperatively larger angle κ as an intraoperative offset might result in a too nasally centered ablation that causes topographic and optical drawbacks; therefore, centering the ablation based on the intraoperative measured offset is recommended.

KW - Adult

KW - Astigmatism/physiopathology

KW - Cornea/pathology

KW - Corneal Topography

KW - Female

KW - Humans

KW - Hyperopia/physiopathology

KW - Keratomileusis, Laser In Situ/methods

KW - Male

KW - Middle Aged

KW - Refraction, Ocular/physiology

KW - Retrospective Studies

KW - Treatment Outcome

KW - Visual Acuity

KW - Young Adult

U2 - 10.1016/j.jcrs.2019.01.030

DO - 10.1016/j.jcrs.2019.01.030

M3 - SCORING: Journal article

C2 - 31262484

VL - 45

SP - 952

EP - 958

JO - J CATARACT REFR SURG

JF - J CATARACT REFR SURG

SN - 0886-3350

IS - 7

ER -