gms | German Medical Science

28th International Congress of German Ophthalmic Surgeons (DOC)

11.06. - 13.06.2015, Leipzig

Correlation between anterior chamber characteristics and laser flare photometry immediately after femtosecond laser treatment before phacoemulsification (K)

Meeting Abstract

  • Milena Pahlitzsch - Charité-Universitätsmedizin Berlin, Department of Ophthalmology, Berlin
  • Necip Torun - Charité-Universitätsmedizin Berlin, Department of Ophthalmology, Berlin
  • Marie Luise Pahlitzsch - Charité-Universitätsmedizin Berlin, Department of Ophthalmology, Berlin
  • Matthias K.J. Klamann - Charité-Universitätsmedizin Berlin, Department of Ophthalmology, Berlin
  • Johannes Gonnermann - Charité-Universitätsmedizin Berlin, Department of Ophthalmology, Berlin
  • Eckart Bertelmann - Charité-Universitätsmedizin Berlin, Department of Ophthalmology, Berlin
  • Thomas Pahlitzsch - Augenklinik am Wittenbergplatz, Berlin

28. Internationaler Kongress der Deutschen Ophthalmochirurgen. Leipzig, 11.-13.06.2015. Düsseldorf: German Medical Science GMS Publishing House; 2015. DocWK 1.5

doi: 10.3205/15doc082, urn:nbn:de:0183-15doc0822

Published: June 9, 2015

© 2015 Pahlitzsch et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 License. See license information at http://creativecommons.org/licenses/by/4.0/.


Outline

Text

Introduction: To assess the anterior chamber (AC) characteristics and its correlation to laser flare photometry immediately after femtosecond laser assisted capsulorhexis and photodisruption.

Patients/Methods: The study included 109 cataract eyes (n=109, mean age 62.01 years): n=70 undergoing femtosecond laser assisted cataract surgery (FLACS, LenSx Alcon, USA).) and the control n=39 undergoing phacoemulsification. Flare photometry (KOWA FM 700), AC depth, volume, angle, axial length, pupil diameter, endothelial cells and corneal thickness (CT) were analysed before surgery, immediately after femtosecond laser treatment (only n=70) and 1 day postoperative. Three subgroups with different postoperative flare photometry measurements (Flare <100, Flare 100-249, Flare >249 photon counts/ms) were analysed.

Results: Axial length (p=0.030), AC depth (p=0.002), volume (p=0.002), central and thinnest CT (p=0.026, p=0.003) preoperative and post femtolaser (p=0.002, p=0.023, p=0.039, p=0.011 respectively) showed a significant correlation between Flare <100 vs. Flare 100-249 in the femto cohort. The AC depth (p=0.001) and volume (p=0.001), AC angle (p=0.003) and flare analysis (p=0.001) were significantly larger preoperative and post femtolaser (p=0.001, p=0.007, p=0.040, p=0.001, respectively) in the Flare <100 vs. Flare >249 cohort in the femto group. The control cohort showed only flare <100 photon counts/ms postoperatively.

Discussion: Flat Anterior chamber, low AC volume, narrow AC angle and thin corneal thickness were parameters associated to higher intraocular inflammation due to FLACS. The phacoemulsification control showed no flare values >100 at 1 day follow up. These criteria could be used for patient selection in FLACS to reduce postoperative intraocular inflammation.