The race to find a treatment for presbyopia—or at least its symptoms—continues unabated. Monovision, in which one eye is given a distance focus and the fellow eye a slightly nearer focus, has been a popular way to address this for many years. That’s been true in part because the alternatives (multifocal intraocular lenses, for example) can have drawbacks such as glare and haloes that not all patients are willing to tolerate, in addition to being considerably more expensive. But monovision also has drawbacks, notably the loss of summation between the two eyes, limiting how much difference can be created. Nevertheless, several of the newer options profiled below take advantage of monovision to extend the vision range their approach provides.
