Studies by Zaina Al-Mohtaseb, M.D., and her colleagues demonstrate that intrastromal and penetrating femtosecond laser incisions can be more precise. “They’re better centered and yield a higher percentage of patients with less than 0.5 D of manifest refractive astigmatism postoperatively when compared with their preoperative astigmatism,” says Al-Mohtaseb.

Al-Mohtaseb no longer performs manual AKs (Astigmatic Keratotomy), because of the unpredictable outcome and the patient’s sensation of a foreign body.

Femtosecond laser incisions lower the risk of infection and inflammation

She currently uses the femtosecond laser for both the penetrating and intrastromal incisions. Zaina Al-Mohtaseb, MD, said at OSN New York 2017.

Surgeon Bret Fisher, M.D., points out another plus for femtosecond laser incisions, “The LDV’s lower energy and small spot size potentially reduces inflammation and helps deliver excellent results.”

Study results so far

Intrastromal femtosecond incisions lower post-operative manifest refractive astigmatism with 72 percent of patients having less than 0.5 D postoperatively.

Penetrating Incisions: The study is in progress, but the group is seeing a higher percentage of patients with less than 0.5D compared with their preoperative measurement. The dataset, however, is still too small for comparative purposes.

For best results, Al-Mohtaseb recommends ruling out corneal pathology and irregular astigmatism on the topography to determine astigmatism before moving forward.

Source: Healio