# What are the types or levels of Visual Impairment?

Canonical: https://pinnacleblooms.org/ask/what-are-the-types-or-levels-of-visual-impairment
Publisher: Pinnacle Blooms Network / Bharath Healthcare Laboratories Private Limited

Visual impairment is described by levels (mild, moderate, severe vision loss, through to blindness) based on sharpness of sight and field of vision, and by types — refractive, visual-field, cortical/cerebral (CVI), structural and functional. Most children with low vision retain useful, trainable sight. A clinical AbilityScore and any diagnosis are formed only at a Pinnacle centre.

*When the world looks blurry, faded or narrow, every child experiences it differently — and naming that difference is the first step to support.*

## In short
Visual impairment is described in two useful ways: by **how much a child can see** (the levels) and by **what part of seeing is affected** (the types). The recognised levels run along a spectrum — mild, moderate, severe and profound vision loss, through to blindness — based largely on how clearly a child sees and how much of the visual field they have. The types describe whether the difficulty lies in sharpness, field of view, eye-brain processing, or eye structure. Almost every child with low vision still has *useful sight* that can be built upon.

## The levels of visual impairment
Global frameworks (WHO ICD-11) group vision loss by severity, measured through clear sight (visual acuity) and field of vision:

- **Mild vision impairment** — small reductions in sharpness; often supported well with glasses.
- **Moderate vision impairment** — noticeable difficulty seeing detail at distance or near.
- **Severe vision impairment** — significant loss; daily tasks need adaptation and support.
- **Blindness** — little or no usable sight, including profound loss of the visual field.

In children we also speak of **low vision** — reduced sight that glasses or surgery cannot fully correct, but where the remaining vision is precious and trainable.

## The types of visual impairment
- **Refractive** — blurriness from the eye's focusing (short-sight, long-sight, astigmatism), often correctable with spectacles.
- **Visual field loss** — a narrowed or patchy field, so a child may miss things to the side, above or below.
- **Cortical / cerebral visual impairment (CVI)** — the eyes work, but the brain processes images differently; a common cause in children.
- **Structural / ocular** — affecting parts of the eye itself (cornea, lens, retina, optic nerve).
- **Functional vision differences** — how a child *uses* their sight for play, reaching, reading and moving about.

## The Pinnacle way
A clinical AbilityScore® and any diagnosis are formed only at a Pinnacle Blooms Network centre, under qualified clinician care — never from an online description or a single observation at home. Our teams map your child's *functional vision* — how they use what they see — and build a plan that grows their independence. Start with [understanding visual impairment](/visual-impairment), explore [occupational therapy](/occupational-therapy) for daily-living and sensory support, and learn how [the AbilityScore works](/ask/what-is-the-abilityscore-and-how-is-it-calculated).

## Trusted sources
World Health Organization classification of vision impairment (ICD-11); WHO guidance on eye health and childhood vision; American Academy of Pediatrics guidance on children's vision and development.

**Next step —** Noticed your child squinting, holding things very close, or missing objects to the side? [Book a developmental and vision screen with a Pinnacle clinician](/visual-impairment).

This is general information, not a diagnosis — individual assessment and diagnosis require an appropriately qualified healthcare professional.

## Sources
- WHO ICD-11 classification of vision impairment: https://icd.who.int
- WHO guidance on eye health and childhood vision: https://www.who.int
- American Academy of Pediatrics — children's vision and development: https://www.aap.org

## Connected topics and perspectives
- Conditions: https://pinnacleblooms.org/ask/conditions
- Parent: https://pinnacleblooms.org/ask/lens/stakeholder/parent
- Sensory: https://pinnacleblooms.org/ask/lens/domain/sensory
- Definition: https://pinnacleblooms.org/ask/lens/intent/definition
- Screen: https://pinnacleblooms.org/ask/lens/lifecycle/screen
- Book Assessment: https://pinnacleblooms.org/ask/lens/route/book-assessment
- Early Clarity: https://pinnacleblooms.org/ask/lens/empowerment/early_clarity

## Related question paths

### Understand the subject
- What is Visual Impairment, and what does it look like in early childhood?: https://pinnacleblooms.org/ask/what-is-visual-impairment-and-what-does-it-look-like-in-early-childhood
- What is Visual Impairment?: https://pinnacleblooms.org/ask/what-is-visual-impairment
- What is Visual Impairment and its ICD-11 early-childhood features?: https://pinnacleblooms.org/ask/what-is-visual-impairment-and-what-are-its-icd-11-features-in-early-childhood
- How Visual Impairment Affects a Child's Daily Life: https://pinnacleblooms.org/ask/how-does-visual-impairment-affect-a-child-s-daily-life
- Is Visual Impairment Considered a Disability?: https://pinnacleblooms.org/ask/is-visual-impairment-considered-a-disability
- Is Visual Impairment Genetic or Hereditary?: https://pinnacleblooms.org/ask/is-visual-impairment-genetic-or-hereditary
- What are common myths about Visual Impairment?: https://pinnacleblooms.org/ask/what-are-common-myths-about-visual-impairment
- What causes visual impairment in children?: https://pinnacleblooms.org/ask/what-causes-visual-impairment-in-children
- Conditions That Often Occur Alongside Visual Impairment: https://pinnacleblooms.org/ask/what-other-conditions-often-occur-alongside-visual-impairment
- Early Intervention Outcomes for Visual Impairment in Children Under 7: https://pinnacleblooms.org/ask/what-does-current-research-show-about-early-intervention-outcomes-for-visual-impairment-in-children-under-7
- ICD-11 Classification for Visual Impairment (9D90): https://pinnacleblooms.org/ask/what-is-the-icd-11-classification-for-visual-impairment
- SNOMED CT concept for Visual Impairment: https://pinnacleblooms.org/ask/what-is-the-snomed-ct-concept-for-visual-impairment

### Recognise signs & concerns
- Can Visual Impairment Be Cured?: https://pinnacleblooms.org/ask/can-visual-impairment-be-cured
- Can Visual Impairment Be Prevented?: https://pinnacleblooms.org/ask/can-visual-impairment-be-prevented
- Do boys show visual impairment differently?: https://pinnacleblooms.org/ask/do-boys-show-visual-impairment-differently
- Do girls show visual impairment differently?: https://pinnacleblooms.org/ask/do-girls-show-visual-impairment-differently
- Should I be worried my child might have Visual Impairment?: https://pinnacleblooms.org/ask/should-i-be-worried-my-child-might-have-visual-impairment
- What are the early signs of Visual Impairment?: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-visual-impairment
- Early Signs of Visual Impairment in a 1-Year-Old Boy: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-visual-impairment-in-a-1-year-old-boy
- Early Signs of Visual Impairment in a 1-Year-Old Girl: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-visual-impairment-in-a-1-year-old-girl
- Early Signs of Visual Impairment in a 12-to-18-Month-Old: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-visual-impairment-in-a-12-to-18-month-old
- Early Signs of Visual Impairment in an 18-to-24-Month-Old: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-visual-impairment-in-a-18-to-24-month-old
- Early Signs of Visual Impairment in a 2-Year-Old: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-visual-impairment-in-a-2-year-old
- Early Signs of Visual Impairment in a 2-Year-Old Boy: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-visual-impairment-in-a-2-year-old-boy

### Explore causes & influences
- Are boys more likely to have visual impairment?: https://pinnacleblooms.org/ask/are-boys-more-likely-to-have-visual-impairment
- Are girls more likely to have visual impairment?: https://pinnacleblooms.org/ask/are-girls-more-likely-to-have-visual-impairment
- What causes visual impairment in young children?: https://pinnacleblooms.org/ask/what-causes-visual-impairment-in-young-children
- Early Intervention for Visual Impairment & UN Child Rights: https://pinnacleblooms.org/ask/how-does-early-intervention-for-visual-impairment-advance-un-child-rights-uncrpd-and-the-sdgs
- Contributing Factors for Visual Impairment in Early Childhood: https://pinnacleblooms.org/ask/what-are-the-known-contributing-factors-for-visual-impairment-in-early-childhood
- Cost-Effectiveness of Early Therapy for Visual Impairment in Young Children: https://pinnacleblooms.org/ask/what-is-the-cost-effectiveness-of-early-therapy-for-visual-impairment-in-young-children
- Visual Impairment in young children: India's prevalence and public-health burden: https://pinnacleblooms.org/ask/what-is-the-prevalence-and-public-health-burden-of-visual-impairment-among-young-children-in-india

### Understand assessment
- How AbilityScore tracks progress in Visual Impairment: https://pinnacleblooms.org/ask/how-does-abilityscore-track-progress-in-a-child-with-visual-impairment
- How Visual Impairment Is Assessed in a Young Child: https://pinnacleblooms.org/ask/how-is-visual-impairment-assessed-in-a-young-child
- How Visual Impairment Is Assessed in Children Under 7: https://pinnacleblooms.org/ask/how-is-visual-impairment-assessed-in-children-under-7
- AbilityScore 0–100 for a child with visual impairment: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-0-100-mean-for-a-child-with-visual-impairment
- AbilityScore 100–200 in Visual Impairment: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-100-200-mean-for-a-child-with-visual-impairment
- AbilityScore 200–300 and visual impairment, explained for parents: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-200-300-mean-for-a-child-with-visual-impairment
- AbilityScore 300–400 in Visual Impairment: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-300-400-mean-for-a-child-with-visual-impairment
- AbilityScore® 400–500 with Visual Impairment: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-400-500-mean-for-a-child-with-visual-impairment
- What does an AbilityScore of 500–600 mean for a child with Visual Impairment?: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-500-600-mean-for-a-child-with-visual-impairment
- What an AbilityScore of 600–700 Means for Visual Impairment: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-600-700-mean-for-a-child-with-visual-impairment
- What does an AbilityScore of 700–800 mean for a child with Visual Impairment?: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-700-800-mean-for-a-child-with-visual-impairment
- AbilityScore 800–900 for a Child with Visual Impairment: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-800-900-mean-for-a-child-with-visual-impairment

### Explore therapy & support
- How Visual Impairment Is Diagnosed in a Child: https://pinnacleblooms.org/ask/how-is-visual-impairment-diagnosed-in-a-child
- How common is visual impairment in children?: https://pinnacleblooms.org/ask/how-common-is-visual-impairment-in-children
- Can a child with visual impairment attend a mainstream school?: https://pinnacleblooms.org/ask/can-a-child-with-visual-impairment-attend-a-mainstream-school
- Can a child with visual impairment attend a regular school?: https://pinnacleblooms.org/ask/can-a-child-with-visual-impairment-attend-a-regular-school
- Can a child with visual impairment live independently?: https://pinnacleblooms.org/ask/can-a-child-with-visual-impairment-grow-up-to-live-independently
- How to Support Sensory Development in a Child with Visual Impairment: https://pinnacleblooms.org/ask/how-can-we-support-sensory-development-in-a-child-with-visual-impairment
- How is Visual Impairment supported through therapy?: https://pinnacleblooms.org/ask/how-is-visual-impairment-supported-through-therapy
- AbilityScore & Visual Impairment: what to do next: https://pinnacleblooms.org/ask/my-child-with-visual-impairment-has-an-abilityscore-of-0-100-what-should-we-do-next
- Visual Impairment: AbilityScore 100–200 — What to Do Next: https://pinnacleblooms.org/ask/my-child-with-visual-impairment-has-an-abilityscore-of-100-200-what-should-we-do-next
- AbilityScore 200–300 with Visual Impairment: what to do next: https://pinnacleblooms.org/ask/my-child-with-visual-impairment-has-an-abilityscore-of-200-300-what-should-we-do-next
- Visual Impairment — AbilityScore 300–400 Band: Next Steps: https://pinnacleblooms.org/ask/my-child-with-visual-impairment-has-an-abilityscore-of-300-400-what-should-we-do-next
- AbilityScore 400–500 with Visual Impairment: what to do next: https://pinnacleblooms.org/ask/my-child-with-visual-impairment-has-an-abilityscore-of-400-500-what-should-we-do-next

### At home & in everyday life
- How can I support my child with Visual Impairment at home?: https://pinnacleblooms.org/ask/how-can-i-support-my-child-with-visual-impairment-at-home