diff --git a/app.py b/app.py
index 5e58720..d2c9cec 100644
--- a/app.py
+++ b/app.py
@@ -504,10 +504,6 @@
                 on_click=change_frame,
                 args=(-1,),
             )
-            # if st.button("◀", key=f"prev_{case_id}"):
-            #     if frame_idx > 0:
-            #         st.session_state[frame_key] = frame_idx - 1
-            #         st.rerun()
         with col3:
             st.button(
                 "▶",
@@ -515,10 +511,6 @@
                 on_click=change_frame,
                 args=(1,),
             )
-            # if st.button("▶", key=f"next_{case_id}", disabled=frame_idx >= len(images) - 1):
-            #     if frame_idx < len(images) - 1:
-            #         st.session_state[frame_key] = frame_idx + 1
-            #         st.rerun()
 
     except Exception as e:
         container.error(f"画像読み込みエラー: {e}")