Desk lighting is the be-all and end-all in the home office. If the light falls directly on the work surface and is glare-free, you benefit from optimal visibility when reading and writing.
In addition to zone lighting at the desk, room lighting is essential. This creates a good basic brightness level in the study and thus avoids light-dark contrasts that are unpleasant for the eye.
If there are cabinets or shelves with books, files or similar items in your study, cabinet lighting is recommended.