Corneal topography following excimer photorefractive keratectomy for myopia.

摘要: Abstract Corneal topographic analysis was performed on 97 consecutive eyes with at least one month follow-up after excimer laser photorefractive keratectomy for myopia. Centration of the ablated zone documented in all postoperative examination Topographic Modeling System (Computed Anatomy Inc., NY). Thirty-seven percent were within 0.25 mm pupillary center (PC); 48% between and 0.50 mm, 13% 1.00 2% more than from PC. The greatest amount decentration 1.50 mm. mean 0.36 surface regularity index (SRI), which is a measure optical performance cornea, significantly less sixth first ( P = .013). No correlation SRI found. Four main patterns ablation noted by differential interval. A central uniform present 45% eyes; "semicircular ablations" 33% eyes, "keyhole" pattern 12%, curious "central bump" 10%. useful tool documenting quantitating results following surgery.