Obedience to reason is the foundation of liberty. Reason banishes slavery of self to materialism, to political correctness, to folly, and to range-of-the-moment consciousness known best by the hedonist.
A number of factors can change this estimate, including: Astigmatism. Contact lenses that correct astigmatism cost more than soft contacts that only correct nearsightedness or farsightedness. Soft contact lenses for astigmatism, called toric contacts, frequently retail for $50 to $70 for a box of six lenses. So if you replace your toric contact lenses every two weeks, your annual lens cost is roughly $500 to $700.
Spectacles are the most commonly used method to treat presbyopia, followed by contact lenses, because they are less invasive than surgery. Cost may also be a factor for some. A pair of spectacles costs from as low as $10 to almost $3,000, while existing surgical methods cost between $900 and $2,800 per eye. The cost of the Raindrop near-vision inlay and the procedure to insert it is about $3,200.