What does the term "monovision" refer to in optometry?

• A. A technique for detecting eye diseases
• B. A method for correcting astigmatism
• C. A technique used to correct presbyopia
• D. A method for enhancing color vision

Answer: (C)

Monovision refers specifically to a technique used to correct presbyopia, which is the age-related loss of the eye's ability to focus on near objects. In monovision, one eye is typically corrected for distance vision while the other eye is focused for near vision. This approach allows a patient to use both eyes effectively for different tasks, enabling them to see clearly at various distances without the need for bifocal or multifocal lenses.

The concept is particularly useful for individuals who have difficulty transitioning to progressive lenses or those who prefer a single vision solution. By training the brain to rely on each eye for specific visual tasks, monovision can enhance the overall functional vision of the individual and improve their quality of life when it comes to near tasks, like reading or using a computer.

This method leverages the natural brain ability to suppress the image from one eye when focusing on an object, allowing the person to gain an effective solution for presbyopia while maintaining some level of binocular vision.