Additional Vision Related Conditions

Myopia

A common vision condition in which distant objects appear blurred while close objects can usually be seen more clearly.

Understanding Myopia

Myopia, commonly known as short-sightedness or nearsightedness, is a common vision condition in which distant objects appear blurred while close objects can usually be seen more clearly.

Myopia occurs when the eye’s shape causes light to focus in front of the retina rather than directly on it. It often develops during childhood and adolescence and can progress as the eyes grow.

While mild myopia can usually be corrected with glasses or contact lenses, higher levels of myopia can increase the risk of developing serious eye conditions later in life, including retinal detachment, myopic macular degeneration, glaucoma, and cataracts.

The prevalence of myopia is increasing worldwide, making it an important public health priority. Advances in research, early detection, and myopia management are creating new opportunities to slow its progression and reduce the risk of future vision complications.

Retina International works with patient organisations, researchers, clinicians, and communities worldwide to raise awareness of retinal health, advance research, strengthen patient participation, and improve outcomes for people affected by vision conditions, including complications associated with high myopia.

What is Myopia?

Myopia is a refractive error in which distant objects appear blurred because light entering the eye does not focus correctly on the retina.

The retina is the light-sensitive tissue at the back of the eye that converts light into electrical signals, which are transmitted to the brain to create vision. In a myopic eye, the eyeball is often longer than average from front to back, or the cornea is too curved relative to the length of the eye. As a result, light focuses in front of the retina rather than directly on its surface.

Myopia commonly develops during childhood and may progress throughout the school years and into early adulthood. The degree of myopia varies between individuals, from mild short-sightedness to high myopia, which is associated with a greater risk of retinal and other eye complications.

Myopia is generally classified according to its severity. High myopia is commonly defined as a refractive error of −6.00 dioptres or more in the negative direction, although definitions may vary. Pathological myopia refers to myopia associated with structural changes in the back of the eye that can lead to vision loss.

Understanding the difference between ordinary myopia, high myopia, and pathological myopia is important because the risks and management needs can differ significantly.

1 in 2 people

could have myopia by 2050

Childhood onset

Myopia often develops during childhood and can progress into early adulthood.

More time outdoors

Spending time outdoors can help reduce the risk of developing myopia in children.

Symptoms

How myopia can affect vision

Myopia most commonly develops during childhood, although it can occur at other ages. Symptoms vary depending on the degree of myopia and whether the condition is progressing. Common symptoms include:
Blurred distance vision

Distant objects, such as classroom boards, road signs, or television screens, may appear unclear while close objects remain easier to see.

Squinting

Children and adults may squint to see distant objects more clearly.

Sitting close to screens or the television

Children with undiagnosed myopia may move closer to screens or sit near the front of a classroom to see more clearly.

Eye strain and headaches

Prolonged visual activities may cause eye discomfort, fatigue, or headaches, particularly when vision is not adequately corrected.

Difficulty seeing distant details

Recognising faces from a distance, reading signs, or participating in activities that require clear distance vision may become more difficult.

Frequent changes in prescription

Progressive myopia may require regular changes to glasses or contact lens prescriptions as the eyes continue to grow.

Symptoms associated with retinal complications

People with high or pathological myopia may develop additional symptoms if complications affect the retina. These can include new flashes of light, a sudden increase in floaters, or a shadow or curtain across the field of vision. These symptoms require urgent eye assessment because they may indicate a retinal tear or detachment.

Diagnosis

Identifying myopia

Early detection is important to ensure appropriate vision correction, monitor progression, and identify individuals who may benefit from myopia management. Diagnosis may include:
Comprehensive eye examination

An optometrist or ophthalmologist assesses visual acuity and examines how well the eyes focus light.

Refraction testing

Refraction testing determines the degree of myopia and helps establish the appropriate prescription for glasses or contact lenses.

Cycloplegic refraction

Eye drops temporarily relax the focusing muscles, helping provide a more accurate measurement of refractive error, particularly in children.

Axial length measurement

Measuring the length of the eyeball can help assess eye growth and monitor the progression of myopia over time.

Retinal examination and imaging

For people with high myopia, an examination of the retina may help identify structural changes or complications. Retinal photography and optical coherence tomography (OCT) can provide detailed information when clinically indicated.

Treatment & Management

Correcting vision and slowing myopia progression

Myopia can usually be corrected with glasses or contact lenses, allowing individuals to see distant objects more clearly. However, correcting blurred vision does not necessarily slow the underlying growth of the eye. For children whose myopia is progressing, myopia management strategies may help slow its progression and reduce the likelihood of developing high myopia. Management may include:
Glasses and contact lenses

Prescription glasses and standard contact lenses correct refractive error and improve distance vision.

Specialised spectacle lenses and contact lenses designed for myopia control may also help slow progression in some children.

Myopia control treatments

Depending on the individual’s age, prescription, and clinical needs, myopia management may include:

  • Low-dose atropine eye drops
  • Specialised myopia-control spectacle lenses
  • Multifocal or dual-focus contact lenses
  • Orthokeratology lenses, worn overnight to temporarily reshape the cornea

These approaches differ in their effectiveness, suitability, and potential risks. Treatment should be discussed with an eye care professional, with regular monitoring to assess outcomes and adjust management when needed.

Outdoor activity

Spending more time outdoors during childhood is associated with a reduced risk of developing myopia. Encouraging regular outdoor activity is an important part of broader eye health guidance, although it does not replace clinical management for children who already have progressive myopia.

Regular monitoring

Regular eye examinations help track changes in prescription and eye growth, assess treatment effectiveness, and identify individuals who may be at increased risk of complications.

Management of high myopia

People with high myopia may require additional retinal assessments and ongoing monitoring for conditions such as myopic macular degeneration, retinal tears, retinal detachment, and glaucoma.

Living With Myopia

Supporting individuals and families

Living with myopia often involves regular eye examinations, appropriate vision correction, and, for children with progressive myopia, decisions about longer-term management.

With suitable care and support, most people with myopia can maintain good functional vision. However, individuals with high or pathological myopia may need additional monitoring and support because of the increased risk of vision-threatening complications.

Support and management may include:

  • Regular eye examinations
  • Appropriate glasses or contact lenses
  • Myopia management advice for children and families
  • Healthy visual habits and outdoor activity
  • Information about high myopia and associated risks
  • Retinal monitoring when clinically indicated
  • Access to specialist eye care
  • Connection with patient organisations and support networks

The experiences and priorities of people living with myopia and its complications are important in shaping research, healthcare services, public awareness, and advocacy efforts.

Research & Innovation

Advancing the future of myopia management

The growing global prevalence of myopia has accelerated research into the mechanisms of eye growth, strategies to slow progression, and ways to reduce the risk of long-term complications. Current areas of research include:

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