What does "Monovision" refer to in contact lens fitting?

"Monovision" refers to a fitting technique in which one eye is corrected for distance vision while the other eye is corrected for near vision. This approach is commonly used for individuals who are presbyopic, a condition that typically affects people over the age of 40, where the ability to focus on close objects diminishes. By utilizing monovision, the brain learns to adapt to the different focal points, allowing the individual to see both far and near without the need for multifocal lenses.

This technique capitalizes on the brain's ability to suppress the image from one eye and favor the image from the other, depending on the visual task at hand. For example, when reading, the near vision lens provides clarity for close work, while the distance lens maintains focus for activities like driving.

The other options describe different fitting techniques or methods that do not apply to monovision. Fitting both eyes for distance vision does not provide the near correction needed for presbyopia. Multifocal lenses are designed for both near and distance vision in each eye but are not the same as monovision. Lastly, a fitting method solely focused on astigmatism correction does not encompass the broader concept of monovision, which is specifically targeted towards addressing