Healthy Eyes: To See Or Not To See

Healthy Eyes: To See Or Not To See

Our eyes are among the most complex and vital organs in the body — yet eye health is one of the most neglected aspects of preventive care. From screen fatigue to hereditary conditions, the threats to our vision are many. The good news: most are preventable or manageable with the right knowledge and habits.

Common Eye Conditions and Their Genetic Links

• Myopia (short-sightedness): Strongly heritable — if both parents are myopic, a child has a significantly higher risk. Excessive near work and screen time can accelerate progression

• Glaucoma: A leading cause of irreversible blindness. Genetic variants in genes like MYOC, OPTN, and WDR36 are associated with elevated intraocular pressure and glaucoma risk. Family history is a major risk factor

• Age-Related Macular Degeneration (AMD): The leading cause of vision loss in adults over 50. Variants in the CFH and ARMS2 genes significantly increase AMD risk. Smoking dramatically amplifies genetic risk

• Diabetic Retinopathy: A complication of diabetes that damages blood vessels in the retina. Genetic predisposition to diabetes and poor glycaemic control are the primary risk factors

• Colour blindness: X-linked recessive condition, far more common in men. Caused by variants in the OPN1LW and OPN1MW genes

Everyday Tips for Healthy Eyes

• Follow the 20-20-20 rule: every 20 minutes, look at something 20 feet away for 20 seconds

• Wear UV-protective sunglasses outdoors

• Eat a diet rich in lutein, zeaxanthin, and omega-3 fatty acids (leafy greens, eggs, fish)

• Don’t smoke — smoking dramatically increases the risk of AMD and cataracts

• Get regular eye examinations, especially if you have a family history of eye disease

• Manage blood sugar and blood pressure — both affect eye health significantly