First, problem background: I'm attempting to source lenses for use in eyeglasses to deal with extreme sensitivity to chromatic aberration, and likely need either achromatic doublets or single lenses in very low dispersion material (e.g. various fluorite crown glasses with Abbe numbers up to 90 or so).
I've found several optical manufacturers/labs that advertise single-item custom optics and seem to have the capabilities to produce what I want, but I don't have any background in lens design to know what kind of design parameters I'd need to provide to make a meaningful inquiry, much less an order.
My prescription is moderately high negative, -6.25 and -7 diopters, with cylinder components (yes, let's make it harder) of -1 and -2, respectively. Most of the non-ophthalmic optics sources I've found list their regular stock (non-custom) items in just focal length and diameter. Obviously pure spherical diopters can be converted to a focal length if needed, but I'm not sure how the cylinder components come into play and possibly complicate or preclude certain designs (for doublets?), and what other parameters might be relevant/important (for example, outer curvature which seems to be something of a free parameter but maybe there are reasons it should correspond in some way to the eyes).
What do I need to learn to go about translating my prescription into something I might be able to actually get made?