Hormones act as messengers, instructing your organs on what to do. They send signals through your bloodstream to various parts of your body, including your eyes. For clear vision, your eyes rely on tear fluid. Blinking spreads the tear fluid thinly and evenly across the eye, forming what is known as the tear film. This film protects the eye and keeps it smooth and moist.
The sex hormones oestrogen and progesterone influence the mucous membranes and the production of tear fluid, as well as other components of the tear film. During menopause, these hormones fluctuate and decline, which can cause your eyes to feel dry, irritated, or painful, lead to blurry vision, and make focusing more challenging.
It is also thought that oestrogen plays a role in the elasticity of the cornea, which determines how light enters your eyes. When oestrogen levels drop, your vision may blur, and you may notice other changes in sharpness.
Finally, menopause increases the likelihood of inflamed eyelids (blepharitis) and eye eczema. Oestrogen stimulates collagen production, and when this decreases, the skin around the eyes becomes thinner and more sensitive. As a result, your eyelids may become red, burning, or sticky more quickly, you may experience excessive tearing, or you may become more sensitive to light.
Up to 80 per cent of women in menopause experience dry eyes or other eye complaints. Women are also more prone to dry eyes than men, partly due to hormonal changes. Opticians frequently see women aged 40 to 50 with eye complaints. The further along you are in menopause, the lower your oestrogen levels and the greater the likelihood of eye problems. When and to what extent you experience symptoms varies from woman to woman.