Design features of 'virtual' NaFl displays allow changes to base curves
, peripheral curves, diameters, and practitioner interpretation and input may be altered to show the presumed effective change this will induce at centre, mid-periphery and edge of the lens/cornea relationship.
Majority showed normal curve with left shift and mild broad base curve
. Two of the cases show abnormal histogram with bimodal broad base.
Let S be a surface having a pseudo null base curve
a in the 3-dimensional Minkowski space with parametrization (6).
Thus, the parametrization of the ruled surface is given by [phi](t; v) = [alpha](t) + vX(t) where [alpha] and X are the base curve
and unit vector in the direction of the rulings of the ruled surface, respectively.
We investigate relations between Frenet-Serret invariants of spherical images and the base curve
. Additionally, some characterizations of spherical images to be general helices if the base curve
is a ccr-curve are presented.
* Carefully check to make sure the company gives you * the exact brand, * lens name, * power, * sphere, * cylinder, if any, * axis, if any, * diameter, * base curve
, and * peripheral curves, if any.
the markets went downwards under pressure of the base curve
. The drop within the corporate sector formed 20a50 bps.
Ortho-k was first introduced in the early 1960s when practitioners began to notice a reduction in myopia from corneal contact lenses fitted with a base curve
flatter than the corneal curvature.
Today sale continues at the market under pressure of the rapid growth of the base curve
After a slide of the base curve
overnight, the Russian Eurobonds gained some space for another climbing.
EYEART Laboratories designed a lens with a diameter and base curve
of 16.5mm and 9.2mm, respectively, and power of +5.00/-6.00 xl80.
Today we expect reduction of demand of the Russian loans against the back of the resumed growth of the base curve