Michael Gwarisa
Maintaining healthy vision isn’t just about genetics or limiting screen time—where you live can play a big role. A new global analysis shows that certain cities offer ideal conditions for protecting eyesight, thanks to clean air, green spaces, low UV exposure, and easy access to eye care.
1. Reykjavik, Iceland
- Eye Care Professionals: 12.2 per 100K residents
- Vision Loss Prevalence: 1.95%
- Green Space: 198 m² per person
- Air Quality (PM2.5/AQI): 19
- UV Index: 1.7
- Humidity: 78.7%
- Annual Sunshine Hours: 1,330
Reykjavik tops the list for eye health. Residents breathe some of the cleanest air on the planet, reducing daily irritation and dry eyes. The city also has the lowest UV exposure in the study, lowering long-term risks like cataracts. With around 12 eye doctors per 100K people, access to checkups and treatment is excellent. As a result, fewer than 2% of Reykjavik’s population experiences vision loss.
2. Stockholm, Sweden
Stockholm is second, thanks largely to its abundant green spaces—twice as many parks as many other cities. Spending time outdoors gives residents a break from screens, while the city’s low UV index (2.4) and minimal light pollution at night protect eyes from strain.
3. Oslo, Norway
Oslo ranks third and stands out for the availability of eye care professionals. With 15 ophthalmologists and optometrists per 100K residents, timely checkups are easy to get. The city also boasts plenty of green spaces and clean air, helping residents manage dry eyes and avoid fatigue from artificial lighting.
4. Canberra, Australia
The highest-ranking city outside Europe, Canberra offers 420 m² of parkland per resident—double what most European cities provide. Clean air (pollution score 29) and low nighttime light pollution (33.25) create a stress-free environment for eyes. Only 1.9% of residents experience vision loss.
5. Zurich, Switzerland
Zurich rounds out the top five, with excellent access to eye care services—more than 15 eye doctors per 100K people, similar to Geneva. Moderate UV exposure (3.8 index) and around 1,700 annual sunshine hours provide enough natural light for outdoor activity without overstraining the eyes.
An ophthalmology specialist, commenting on the research from Overnight Glasses, noted:
“Most people associate eye health with screen time or genetics, but the urban environment can have just as much impact long term. Clean air protects the tear film and surface of the eye, while regular time outdoors, particularly in natural light, appears to slow myopia progression in younger populations. Access to doctors also matters—if scheduling a checkup takes weeks, conditions may go undiagnosed and untreated.”
