![]() Median time to progression by Kaplan-Meier analysis was 12 years. ![]() In total, 94 eyes of 85 patients were included - 25 of 94 (26.5 %) eyes showed progression of the central K greater than or equal to 1.50 D progression took 3.5 years on average. Additionally, corneal astigmatic changes were evaluated by means of vector analysis. In each group, the quantitative topographic parameters were compared and tested as predictive factors for KC progression. Patients with an increase of greater than or equal to 1.50 diopters (D) in the central keratometry (K) were placed in the progression group, and the others were placed in the non-progression group. These investigators retrospectively reviewed the data of 94 eyes of patients with mild KC who had undergone computerized video-keratography (Orbscan IIz Bausch & Lomb Surgical, Rochester, NY) at least twice at an interval of greater than or equal to 1 year. The American Academy of Ophthalmology’s guidelines on “Primary open-angle glaucoma” (AAO, 2010) mentioned no role for corneal topography in the management of patients with open-angle glaucoma.Ĭhoi and Kim (2012) examined the longitudinal changes in corneal topographic indices over time in patients with mild keratoconus (KC) and determined predictive factors for the increase in corneal curvature. This test is used for the detection of subtle corneal surface irregularities and astigmatism as an alternative to manual keratometry.
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