BACKGROUND The primary objective of this study was to investigate the level of agreement between IOL-Master and OB-820 ocular biometers. MATERIALS AND METHODS In this prospective randomized case series, we measured the anterior chamber depth (ACD), the axial length (AL), the corneal radii (R1, R2), the ratio of mean corneal radius and spherical equivalent and the corneal astigmatism (cylinder...

Planetary nebula axial ratios have been used to investigate the intrinsic structures of sources having elliptical or circular morphologies, using methods previously applied to elliptical galaxies. The results appear to indicate that most such nebulae have intrinsic axial ratios β in the range 0.92→0.75, and that gradients of surface brightness with axial ratio are most consistent with oblate sh...

We studied the potential of myopic corneal refractive laser surgery to induce myopia (axial elongation) and potential interactions between aberrations (generally resulting from the procedure) and myopia development in chicks (Gallus domesticus). Ten white Leghorn chicks were monolaterally treated one day post-hatching with photorefractive keratectomy (PRK), with a nominal dioptric change of -9....

Core to the mathematical innovations of space syntax is the concept of graph-radius. In this paper, the authors propose a new mathematical mechanism to provide a relative measure for the local/global configuration of an axial line. We propose that cumulative depth be redefined as CD = Sum (1/((di-1)^k)) where d is the depth from node i to the origin and k is a constant factor. This method is ba...

BACKGROUND The aim of this study was to examine whether reduced distal radius fractures can be treated with early mobilisation without affecting the radiographic results. METHODS In a prospective randomised study, 109 patients (mean age 65.8 (range 50-92)) with moderately displaced distal radius fractures were treated with closed reduction and plaster cast fixation for about 10 days (range 8-...

PURPOSE Central corneal curvature is known to vary with refractive error, but the relation between corneal topography and ametropia is less clear. The current study was conducted to determine whether a relation exists between corneal asphericity and myopia. Associations between corneal asphericity and each of the components of refraction also were examined. METHODS Corneal asphericity and api...