Published: 4 November 2020 · Last updated: 16 September 2026 · Publisher: Smart Vision Optometry
At a glance
Myopia, or short-sightedness, causes distant images to focus in front of the retina. Glasses or contact lenses can usually correct the blur. Myopia does not create a narrow personality, short-term judgement or a particular worldview. Higher prescriptions can carry greater eye-health risks, so correction and ongoing monitoring are both important.
What myopia changes—and what it does not
In most myopia, the eye is too long for its optical power. Light from distant objects focuses in front of the retina instead of directly on it, producing distance blur without correction. The amount of blur depends on the prescription and viewing distance.
Appropriate glasses or contact lenses move the image focus onto the retina and can provide clear distance vision. Myopia is therefore an optical and eye-health condition—not a measure of intelligence, perspective, personality, social behaviour or decision-making. The figurative use of “myopic” to mean short-term thinking should not be treated as a clinical description of people who are short-sighted.
Why myopia is increasing in many populations
Myopia prevalence has increased substantially in many regions, particularly in parts of East and Southeast Asia. A widely cited modelling study estimated that almost half of the global population could have myopia by 2050 if past trends continue. This is a population forecast, not a prediction that every individual will become myopic.
Read the original estimate in Holden and colleagues’ 2016 systematic review and modelling study. Our related article, Will half the world have myopia by 2050?, explains the forecast and its limitations.
Urban living is a pattern, not a diagnosis
Population studies can find higher myopia prevalence in urban, highly educated or intensive near-work settings. Those patterns do not prove that living in a city, using a screen, artificial lighting or any single lifestyle feature directly caused one person’s myopia.
The International Myopia Institute review of risk factors describes interacting genetic and environmental influences. More time outdoors is consistently associated with a lower chance of developing myopia, while the evidence and measurement challenges differ across education, near work, screen time and other exposures. Advice should reflect that uncertainty instead of reducing myopia to one cause.
Correction and eye-health monitoring serve different purposes
Glasses and contact lenses correct blur while they are worn. They do not remove the structural features of a more elongated eye. Higher levels of myopia are associated with greater risk of retinal detachment, myopic maculopathy and some other eye conditions, but risk is not certainty and myopia does not mean inevitable sight loss.
The US National Eye Institute explains myopia symptoms, risk factors, correction and the additional eye-health risks associated with severe myopia. The timing and type of review should be based on age, prescription, change over time, symptoms and clinical findings.
Managing childhood myopia
For children, an assessment can confirm the prescription, check eye health and establish whether myopia is progressing. Depending on the child and available evidence, management may include specially designed spectacles or contact lenses, orthokeratology or prescribed low-dose atropine. These options aim to slow progression; they do not guarantee a cure or eliminate the need for monitoring.
Smart Vision Optometry’s myopia prevention and management service outlines its assessment-led approach. For further parent-focused information, visit Myopia Prevention Australia.
Book an assessment at Bondi or Mosman, or call Bondi on (02) 9365 5047 or Mosman on (02) 9969 1600.
Frequently asked questions
Does myopia affect personality or judgement?
No. Myopia is an optical and eye-health condition. It does not determine intelligence, personality, values, perspective or whether someone thinks in the short or long term.
Can glasses or contact lenses correct myopia?
Yes. An appropriate prescription can usually correct the distance blur while the lenses are worn. Correction does not remove the need to monitor eye health, particularly with higher myopia.
Does living in a city cause myopia?
Urban populations may show higher prevalence, but urban residence is not a diagnosis or a single proven cause for an individual. Myopia reflects interacting inherited and environmental factors.
Myopia Prevention, Control & Management
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