The primary cause of presbyopia is the natural ageing process of the eye. In younger individuals, the crystalline lens remains soft and flexible, allowing it to change shape easily for clear near focus. With age, the lens gradually becomes thicker, stiffer, and less elastic, reducing the eye’s ability to focus on close objects.
Changes in the surrounding ciliary muscles and lens proteins also contribute to declining accommodative power. Although ageing is the main factor, conditions such as diabetes, prolonged digital screen exposure, certain medications, and previous eye disorders may accelerate near-vision difficulties in some individuals.
Factors that may worsen symptoms
- Excessive digital screen exposure
- Diabetes and certain medical conditions
- Long hours of near work
- Existing refractive errors