At 3am the lamp is the first thing your mother reaches for, and it is usually the last thing anyone checks. Before you buy one, sit where she sits on the bed and look at the lamp from there, not from the store shelf.

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Compare the switch by feel

Ask your mother to lie back on her pillow with the room dark and reach for the switch. Try each style you are considering: a push-on base, a pull chain, and a touch sensor. Write down which one she finds on the first try. A touch sensor can switch on from a brush of the sheet, so if she rolls onto it in her sleep the room lights up without warning. A push-on base or a short pull chain usually gives her a clear target. Choose the switch she can find without looking.

Compare the base

Pick up the lamp and look at its footprint. A narrow base on a tall shade tips when a sleeve catches it. Compare the width of the base against the top of the table. The base should sit fully on the table, not hang over the edge, and it should be heavy enough that a light bump does not move it. Keep the lamp away from the table edge so her elbow does not knock it toward the floor.

Compare the cord

Measure from the outlet to the spot on the table where the lamp will sit. Look for enough cord to reach without pulling tight, and no more than that. Extra cord gathers on the floor, and a cord that runs along the path to the bathroom is a trip waiting to happen. Run the cord along the wall or behind the table, and keep it off the floor between bed and door. If the only outlet is across the room, say so before you buy. A longer cord is not the fix. A different outlet is a question for an electrician, not a shopping item.

Write down

Write the switch type she found first, the base width, the cord length, the outlet location, and the model you chose. Keep the paper with the lamp's box for the first month. If she ever reaches for the lamp and misses, note the time and what she was doing, and tell the physician if the trip keeps going wrong.

If you are working through the night route in order, the reading path shows where this stop fits: Start here: a reading path.