diff --git a/cmd/oras/internal/display/metadata/text/manifest_index.go b/cmd/oras/internal/display/metadata/text/manifest_index.go
index 36dada48e..b22c310ce 100644
--- a/cmd/oras/internal/display/metadata/text/manifest_index.go
+++ b/cmd/oras/internal/display/metadata/text/manifest_index.go
@@ -36,26 +36,27 @@ func NewManifestIndexCreateHandler(printer *output.Printer) metadata.ManifestInd
 	}
 }
 
-// OnIndexPacked implements metadata.ManifestIndexCreateHandler.
+// OnIndexPacked implements ManifestIndexCreateHandler.
 func (h *ManifestIndexCreateHandler) OnIndexPacked(desc ocispec.Descriptor) error {
 	return h.printer.Println("Packed", descriptor.ShortDigest(desc), ocispec.MediaTypeImageIndex)
 }
 
-// OnIndexPushed implements metadata.ManifestIndexCreateHandler.
+// OnIndexPushed implements ManifestIndexCreateHandler.
 func (h *ManifestIndexCreateHandler) OnIndexPushed(path string) error {
 	return h.printer.Println("Pushed", path)
 }
 
-// OnTagged implements metadata.TaggedHandler.
+// OnTagged implements TaggedHandler.
 func (h *ManifestIndexCreateHandler) OnTagged(_ ocispec.Descriptor, tag string) error {
 	return h.printer.Println("Tagged", tag)
 }
 
-// OnCompleted implements metadata.ManifestIndexCreateHandler.
+// OnCompleted implements ManifestIndexCreateHandler.
 func (h *ManifestIndexCreateHandler) OnCompleted(desc ocispec.Descriptor) error {
 	return h.printer.Println("Digest:", desc.Digest)
 }
 
+// ManifestIndexUpdateHandler handles text metadata output for index update events.
 type ManifestIndexUpdateHandler struct {
 	printer *output.Printer
 }
@@ -67,12 +68,12 @@ func NewManifestIndexUpdateHandler(printer *output.Printer) metadata.ManifestInd
 	}
 }
 
-// OnManifestRemoved implements metadata.ManifestIndexUpdateHandler.
+// OnManifestRemoved implements ManifestIndexUpdateHandler.
 func (miuh ManifestIndexUpdateHandler) OnManifestRemoved(digest digest.Digest) error {
 	return miuh.printer.Println("Removed", digest)
 }
 
-// OnManifestAdded implements metadata.ManifestIndexUpdateHandler.
+// OnManifestAdded implements ManifestIndexUpdateHandler.
 func (miuh ManifestIndexUpdateHandler) OnManifestAdded(ref string, digest digest.Digest) error {
 	if contentutil.IsDigest(ref) {
 		return miuh.printer.Println("Added", ref)
@@ -80,7 +81,7 @@ func (miuh ManifestIndexUpdateHandler) OnManifestAdded(ref string, digest digest
 	return miuh.printer.Println("Added", digest, ref)
 }
 
-// OnIndexMerged implements metadata.ManifestIndexUpdateHandler.
+// OnIndexMerged implements ManifestIndexUpdateHandler.
 func (miuh ManifestIndexUpdateHandler) OnIndexMerged(ref string, digest digest.Digest) error {
 	if contentutil.IsDigest(ref) {
 		return miuh.printer.Println("Merged", ref)
@@ -88,22 +89,22 @@ func (miuh ManifestIndexUpdateHandler) OnIndexMerged(ref string, digest digest.D
 	return miuh.printer.Println("Merged", digest, ref)
 }
 
-// OnIndexUpdated implements metadata.ManifestIndexUpdateHandler.
+// OnIndexUpdated implements ManifestIndexUpdateHandler.
 func (miuh ManifestIndexUpdateHandler) OnIndexPacked(desc ocispec.Descriptor) error {
 	return miuh.printer.Println("Updated", desc.Digest)
 }
 
-// OnIndexPushed implements metadata.ManifestIndexUpdateHandler.
+// OnIndexPushed implements ManifestIndexUpdateHandler.
 func (miuh ManifestIndexUpdateHandler) OnIndexPushed(indexRef string) error {
 	return miuh.printer.Println("Pushed", indexRef)
 }
 
-// OnTagged implements metadata.TaggedHandler.
+// OnTagged implements TaggedHandler.
 func (h *ManifestIndexUpdateHandler) OnTagged(_ ocispec.Descriptor, tag string) error {
 	return h.printer.Println("Tagged", tag)
 }
 
-// OnCompleted implements metadata.ManifestIndexUpdateHandler.
+// OnCompleted implements ManifestIndexUpdateHandler.
 func (h *ManifestIndexUpdateHandler) OnCompleted(desc ocispec.Descriptor) error {
 	return h.printer.Println("Digest:", desc.Digest)
 }
diff --git a/cmd/oras/root/manifest/index/update.go b/cmd/oras/root/manifest/index/update.go
index ccaf6ac17..03e107af2 100644
--- a/cmd/oras/root/manifest/index/update.go
+++ b/cmd/oras/root/manifest/index/update.go
@@ -155,8 +155,8 @@ func updateIndex(cmd *cobra.Command, opts updateOptions) error {
 	return displayMetadata.OnCompleted(desc)
 }
 
-func fetchIndex(ctx context.Context, handler status.ManifestIndexUpdateHandler, target oras.ReadOnlyTarget, reference string) (ocispec.Index, error) {
-	if err := handler.OnFetching(reference); err != nil {
+func fetchIndex(ctx context.Context, displayStatus status.ManifestIndexUpdateHandler, target oras.ReadOnlyTarget, reference string) (ocispec.Index, error) {
+	if err := displayStatus.OnFetching(reference); err != nil {
 		return ocispec.Index{}, err
 	}
 	desc, content, err := oras.FetchBytes(ctx, target, reference, oras.DefaultFetchBytesOptions)
@@ -166,7 +166,7 @@ func fetchIndex(ctx context.Context, handler status.ManifestIndexUpdateHandler,
 	if !descriptor.IsIndex(desc) {
 		return ocispec.Index{}, fmt.Errorf("%s is not an index", reference)
 	}
-	if err := handler.OnFetched(reference, desc); err != nil {
+	if err := displayStatus.OnFetched(reference, desc); err != nil {
 		return ocispec.Index{}, err
 	}
 	var index ocispec.Index
@@ -232,16 +232,16 @@ func mergeIndexes(ctx context.Context, displayStatus status.ManifestIndexUpdateH
 	return manifests, nil
 }
 
-func removeManifests(handler metadata.ManifestIndexUpdateHandler, manifests []ocispec.Descriptor, target oras.ReadOnlyTarget, opts updateOptions) ([]ocispec.Descriptor, error) {
+func removeManifests(displayMetadata metadata.ManifestIndexUpdateHandler, manifests []ocispec.Descriptor, target oras.ReadOnlyTarget, opts updateOptions) ([]ocispec.Descriptor, error) {
 	// create a set of digests to speed up the remove
 	digestToRemove := make(map[digest.Digest]bool)
 	for _, manifestRef := range opts.removeArguments {
 		digestToRemove[digest.Digest(manifestRef)] = false
 	}
-	return doRemoveManifests(manifests, digestToRemove, handler, opts.Reference)
+	return doRemoveManifests(manifests, digestToRemove, displayMetadata, opts.Reference)
 }
 
-func doRemoveManifests(originalManifests []ocispec.Descriptor, digestToRemove map[digest.Digest]bool, handler metadata.ManifestIndexUpdateHandler, indexRef string) ([]ocispec.Descriptor, error) {
+func doRemoveManifests(originalManifests []ocispec.Descriptor, digestToRemove map[digest.Digest]bool, displayMetadata metadata.ManifestIndexUpdateHandler, indexRef string) ([]ocispec.Descriptor, error) {
 	manifests := []ocispec.Descriptor{}
 	for _, m := range originalManifests {
 		if _, exists := digestToRemove[m.Digest]; exists {
@@ -254,7 +254,7 @@ func doRemoveManifests(originalManifests []ocispec.Descriptor, digestToRemove ma
 		if !removed {
 			return nil, fmt.Errorf("%s does not exist in the index %s", digest, indexRef)
 		}
-		if err := handler.OnManifestRemoved(digest); err != nil {
+		if err := displayMetadata.OnManifestRemoved(digest); err != nil {
 			return nil, err
 		}
 	}