Central corneal volume and endothelial cell count following femtosecond laser-assisted refractive cataract surgery compared to conventional phacoemulsification

• Published in: Journal of refractive surgery (1995) Vol. 28; no. 6; p. 387
• Main Authors: Takács, Agnes I, Kovács, Illés, Miháltz, Kata, Filkorn, Tamás, Knorz, Michael C, Nagy, Zoltán Z
• Format: Journal Article
• Language: English
• Published: United States 01-06-2012
• Subjects: Aged; Cataract Extraction; Cell Count; Cornea - pathology; Endothelium, Corneal - pathology; Female; Humans; Laser Therapy - methods; Lens Implantation, Intraocular; Male; Organ Size; Phacoemulsification - methods; Prospective Studies; Refraction, Ocular - physiology; Visual Acuity - physiology
• ISSN: 1081-597X
• DOI: 10.3928/1081597X-20120508-02

To compare the effect of conventional phacoemulsification and femtosecond laser-assisted cataract surgery on the cornea using Scheimpflug imaging and noncontact specular microscopy.
In each group, 38 eyes (38 patients) underwent cataract surgery using either femtosecond laser-assisted (Alcon LenSx laser) (femtolaser group) or conventional phacoemulsification (phaco group). Central corneal thickness, 3-mm corneal volume, and Pentacam Nucleus Staging (PNS) were determined by a rotating Scheimpflug camera (Pentacam HR, Oculus Optikgeräte GmbH), and the volume stress index was calculated at 1 day and 1 month postoperatively. Endothelial cell count was measured by noncontact specular microscopy preoperatively, 1 day, 1 week, and 1 month postoperatively.
Central corneal thickness was significantly higher in the phaco group (607±91 μm) than in the femtolaser group (580±42 μm) on day 1, but did not differ significantly preoperatively and at 1 week and 1 month. Volume stress index at day 1 was significantly lower in the femtolaser group than in the phaco group (P<.05) but did not differ significantly at 1 month. Multivariate regression analysis showed that the type of surgery had a significant effect on central corneal thickness.
Femtosecond laser-assisted cataract surgery causes less corneal swelling in the early postoperative period and may cause less trauma to corneal endothelial cells than manual phacoemulsification.