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tailored care approach for posterior cortical atrophy

Key points

  • PCA primarily affects visual processing, not memory. Adapt your care to the visual world, not the memory world.
  • Use high-contrast colors, reduce clutter, and rely on verbal and touch cues instead of pointing or visual demonstrations.
  • Approach from the front, speak calmly, and break tasks into single steps. Allow extra time for every activity.
  • Do not assume confusion is due to memory loss—ask if the person can see what you mean.
  • Create a consistent, predictable environment. Avoid moving furniture or changing routines without warning.
  • Join a PCA-specific support group. You are not alone, and other families have found practical solutions.

General caregiving information, not medical advice. Check medications and major care changes with your clinician.

Step-by-step

  1. Start by reducing visual clutter. Remove unnecessary items from tables, counters, and floors. Use solid-colored tablecloths and avoid busy patterns. Place only one or two objects at a time in the person's line of sight. This helps the brain focus on what matters.

  2. Use high-contrast colors to define spaces. For example, put a dark-colored mat on a light floor to mark the edge of a step, or use brightly colored tape on the rim of a white cup. Contrast helps the brain distinguish objects from backgrounds.

  3. When giving instructions, use verbal cues first, not visual ones. Say, 'The cup is on your left side, about an arm's length away,' instead of pointing. Avoid saying 'over there' or 'look here.' Be specific about location and distance.

  4. Approach the person from the front and at eye level. Sudden movements or approaching from the side can startle them because their peripheral vision may be impaired. Speak calmly and identify yourself: 'Hi, it's me, Sarah. I'm coming to help you with lunch.'

  5. Break down tasks into single steps. Instead of saying 'Get dressed,' say, 'Let's put on your shirt. Here is the sleeve for your right arm.' Wait for them to complete each step before giving the next instruction. This reduces overwhelm.

  6. Create a consistent, predictable environment. Keep furniture in the same place. Use the same route to the bathroom. Label rooms with large, high-contrast signs (e.g., a black 'BATHROOM' on a white door). Avoid rearranging the home without warning.

  7. Use touch to guide. If the person is having trouble finding a chair, gently place their hand on the chair back and say, 'The chair is right here.' Physical guidance can be more effective than verbal description alone.

  8. Check lighting. PCA often causes sensitivity to glare and difficulty adjusting to changes in light. Use soft, even lighting. Avoid bright overhead lights or windows that create harsh shadows. Use blackout curtains if needed.

  9. Encourage the person to use their other senses. For example, if they cannot see the food on their plate, describe it: 'You have chicken, rice, and green beans. The chicken is at the top of the plate.' Use smell and touch to orient them.

  10. Build in rest breaks. Visual processing is exhausting for the PCA brain. After 15–20 minutes of an activity, suggest a break. Sit quietly, listen to music, or close their eyes for a few minutes. This prevents fatigue and frustration.

What not to do

  • Do not say 'Just look more carefully.' This implies the person is not trying hard enough, which is both untrue and hurtful. Instead, simplify the visual field and use verbal guidance.

  • Do not rearrange furniture or move objects without telling the person. In PCA, spatial memory is often intact, so a moved chair can cause falls and confusion. Always announce changes and show the person the new layout.

  • Do not use busy patterns or cluttered backgrounds. A patterned rug or a wall full of photos can be visually overwhelming. Stick to solid, neutral colors for walls, floors, and tablecloths.

  • Do not rely on pointing or visual demonstrations. The person may not be able to see where you are pointing. Instead, use words and touch to guide them.

  • Do not rush or multitask. The person needs extra time to process visual information. Rushing increases anxiety and can lead to accidents. Plan for extra time for every activity.

  • Do not assume memory loss is the main problem. If the person seems confused, it is likely due to visual processing issues, not forgetting. Ask, 'Is it hard to see what I mean?' rather than 'Do you remember?'

Practical tools

  • High-Contrast Tape and Labels

    Use brightly colored tape (e.g., red or yellow) to mark edges of steps, countertops, and doorways. Label drawers and cabinets with large, black-on-white text. This helps the brain distinguish objects from backgrounds.

  • Verbal Script for Guiding Movement

    Practice saying: 'The chair is directly in front of you, about two steps away. I will guide your hand to the armrest.' Avoid vague phrases like 'over there.' Be precise and calm.

  • Single-Item Tray

    Use a tray with a non-slip mat to present one item at a time during meals or activities. For example, place only the fork on the tray, then the plate, then the cup. This reduces visual overload.

  • Glare-Reducing Window Film

    Apply sheer, light-diffusing film to windows to soften harsh sunlight. This reduces glare and helps the person see more clearly. Avoid blinds that create striped shadows.

  • Touch-and-Tell Technique

    When the person is struggling to find an object, gently take their hand and place it on the object while saying its name. For example, 'This is your water glass. Feel the coolness.' This combines touch with verbal confirmation.

  • Routine Checklist with Verbal Prompts

    Create a simple, verbal checklist for morning or bedtime routines. Say each step aloud: 'First, we wash your face. Now, we brush your teeth. Now, we put on your pajamas.' Do not use a written list—the person may not be able to read it.

Discuss with your clinician

Ask your neurologist or geriatrician about vision rehabilitation therapy—some clinics offer occupational therapy specifically for PCA.

Discuss whether medications like donepezil (Aricept) are appropriate for PCA, as they are sometimes used off-label.

If the person experiences hallucinations or delusions, ask about antipsychotic medications and their risks. Do not start these without a doctor's guidance.

In late stages, discuss palliative care and hospice eligibility. Medicare hospice guidelines require specific criteria (e.g., weight loss, recurrent infections). Ask your clinician if the person qualifies.

If the person has trouble swallowing (dysphagia), ask for a speech therapy evaluation. Do not thicken liquids or change diet without professional advice.

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