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Low-energy femtosecond laser improves visual acuity with minimal trauma
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A low-energy femtosecond laser compared well with other laser platforms in terms of visual outcomes and safety in cataract surgery, a German study found.
The authors detailed results obtained with the Femto LDV Z8 femtosecond laser (Ziemer Ophthalmic Systems), which operates with a pulse rate in the megahertz range rather than the kilohertz range common with other femtosecond lasers.
“The combination of higher pulse rates (frequency) and lower energy levels per spot allows an overlapping pattern of the spots and therefore a more reproducible capsulotomy with smoother edges and more stability,” the study authors said.
The consecutive case series included 110 patients who underwent femtosecond laser cataract surgery with the Femto LDV Z8 platform. Surgery was bilateral in 23 patients and performed during two sessions a median of 14 days apart.
Corrected distance visual acuity improved significantly at 1 day, 1 week, 4 weeks and 3 months after surgery (all P < .001).
Median central corneal thickness increased significantly at 1 day, and aqueous flare increased significantly at 4 weeks postoperatively (both P < .001). However, differences between central corneal thickness preoperatively and 1 week postoperatively and aqueous flare preoperatively and 3 months postoperatively were not significant.
Median endothelial cell count and spherical equivalent did not change significantly from before surgery to after surgery. – by Matt Hasson
Disclosure: The authors report no relevant financial disclosures.
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