Retinal colour duplex scanning during LASIK-ring suction with different keratomes.
S H Schicke1, J Krumeich, G I W Duncker
1Klinik u. Poliklinik für Augenheilkunde der Martin-Luther-Universität Halle-Wittenberg, Ernst-Grube-Strasse 40, Halle 06120, Germany. mail@schicke.ch
Summary
Different LASIK suction rings impact blood flow velocity variably. Some rings significantly reduce or halt blood flow during suction, affecting recovery.
Area of Science:
- Ophthalmology
- Surgical Technology
- Biomedical Engineering
Background:
- Laser-Assisted In Situ Keratomileusis (LASIK) is a common refractive surgery.
- Effective suction is crucial for LASIK procedure stability and outcomes.
- Understanding the impact of suction devices on ocular blood flow is important for patient safety.
Purpose of the Study:
- To quantify the effect of different LASIK suction rings on papillary blood flow velocity.
- To compare the performance of four distinct suction ring manufacturers during the LASIK suction phase.
Main Methods:
- Color Doppler ultrasonography was used to measure central retinal artery blood flow velocity.
- Thirty healthy volunteers underwent LASIK suction with rings from four manufacturers (Hansatome, M2, SKBM, Krumeich).
- Blood flow velocity was recorded before, during, and after suction application.
Main Results:
- 90% of cases showed no detectable blood flow velocity with Hansatome and M2 rings during suction.
- SKBM and Krumeich rings resulted in no blood presence in 56.67% and 10% of cases, respectively (p < 0.05 and p < 0.001).
- Hansatome ring showed significantly lower velocities 30 minutes post-suction (p < 0.01), unlike other rings.
Conclusions:
- LASIK suction rings exhibit varying degrees of impact on blood flow velocity.
- The choice of suction ring can influence intraoperative hemodynamics and potentially post-operative recovery.
