Originally Posted by marshmallowpie
I've done a bit of searching and it seems like it's okay for people with astigmatism to wear non-toric lenses, especially if it's not regularly, and if your astigmatism isn't that bad, it won't make much of a difference. But how do I know how bad my astigmatism is? Also, if I were to buy contacts from YKI, what would I put for the power? It only lets you choose one number for each lens, but on my regular contacts box the power is listed at -5.25 /-0.75 x 090 (left) and -4.25 / -2.25 x 180 (right). And -4.25 and -5.25 are too low, they aren't options on YKI. Also, I've heard people mention CYL as a number, but I don't have that? Besides those power numbers, the only other numbers on my boxes are diametre (14.5) and base curve (8.7).
First off, custom made lenses will last several years if you take care of them. My normal prescription toric lenses are 3 year-wear lenses, and yes they are soft contact lenses. They also cost $250/pair but you get what you pay for. Custom lenses are going to be a bit thicker and much more durable than daily, weekly, monthly, and some yearly disposable lenses. So they are not making that up.
Secondly, I am surprised your optometrist did not explain your prescription to you.
The first number is for distance -5.25 and -4.25 [left and right eyes].
The cylinder is the 2nd number of the prescription. -0.75 and -2.25 for your left and right eyes.
The last number is the axis.
Normal spherical lenses would only have the distance component and no cylinder or axis. Sadly, anything over a -1 cylinder is not going to give you clear, sharp vision with a normal spherical lens. Furthermore, your cylinder is greater than -1.00 [the cutoff for minor astigmatism classification] and you are in the "moderate" classification which means your optometrist prescribed you toric lenses for a reason; the are the only lenses that you will be able to see clearly with. Converting your prescription would not work very well as that works best for folks with -1.00 or less cylinder measurements.
I would ask your optometrist if they have any suggestions or can order lenses for you. You may be able to safely wear a marginally different base curve and diameter which could eliminate some of the customization for lenses such as what 9mmsfx offers.
If it is not in the budget, you can always use photoshop or ask if you can use plano lenses and wear glasses over them [and take off the glasses for pics etc].