diff --git a/code/addons/a11y/src/components/VisionSimulator.stories.tsx b/code/addons/a11y/src/components/VisionSimulator.stories.tsx
index ccbf09fbe583..0c949c1b0eb8 100644
--- a/code/addons/a11y/src/components/VisionSimulator.stories.tsx
+++ b/code/addons/a11y/src/components/VisionSimulator.stories.tsx
@@ -31,7 +31,7 @@ const meta = preview.meta({
 export default meta;
 
 const openMenu: PlayFunction = async ({ canvas, userEvent }) => {
-  await userEvent.click(canvas.getByRole('button', { name: 'Vision simulator' }));
+  await userEvent.click(canvas.getByRole('button', { name: 'Vision filter' }));
 };
 
 export const Default = meta.story({
@@ -51,7 +51,7 @@ export const Selection = meta.story({
     await context.userEvent.click(await screen.findByText('Blurred vision'));
     await expect(managerContext.api.updateGlobals).toHaveBeenCalledWith({ vision: 'blurred' });
     await expect(
-      context.canvas.getByRole('button', { name: 'Vision simulator Blurred vision' })
+      context.canvas.getByRole('button', { name: 'Vision filter Blurred vision' })
     ).toBeVisible();
   },
 });
diff --git a/code/addons/a11y/src/components/VisionSimulator.tsx b/code/addons/a11y/src/components/VisionSimulator.tsx
index ec8d1050a792..19657f93b15a 100644
--- a/code/addons/a11y/src/components/VisionSimulator.tsx
+++ b/code/addons/a11y/src/components/VisionSimulator.tsx
@@ -36,8 +36,9 @@ const ColorIcon = styled.span<{ $filter: string }>(
 );
 
 export const VisionSimulator = () => {
-  const [globals, updateGlobals] = useGlobals();
+  const [globals, updateGlobals, storyGlobals] = useGlobals();
   const value = globals[VISION_GLOBAL_KEY];
+  const isLocked = storyGlobals[VISION_GLOBAL_KEY] !== undefined;
 
   const options = Object.entries(filters).map(([key, { label, percentage }]) => ({
     title: label,
@@ -52,7 +53,10 @@ export const VisionSimulator = () => {
         resetLabel="Reset color filter"
         onReset={() => updateGlobals({ [VISION_GLOBAL_KEY]: undefined })}
         icon={<AccessibilityIcon />}
-        ariaLabel="Vision simulator"
+        disabled={isLocked}
+        ariaLabel={isLocked ? 'Vision filter set by story globals' : 'Vision filter'}
+        ariaDescription="Select a vision filter among predefined options, or reset to remove the filter."
+        tooltip={isLocked ? 'Vision filter set by story globals' : 'Change vision filter'}
         defaultOptions={value}
         options={options}
         onSelect={(selected) => updateGlobals({ [VISION_GLOBAL_KEY]: selected })}