A note before starting
This article is general background on how screens are used in health care. It is not clinical, engineering or regulatory advice. Which display is suitable for a given task, and how it must be set up and checked, is decided by qualified professionals and by the rules that apply where a facility operates. Those rules differ from place to place.
Screens are everywhere in care settings
A hospital or clinic may contain more displays than most workplaces. Some are ordinary office monitors. Others are built for particular jobs and sit in very different conditions: a dim reading room, a bright corridor, a room that is cleaned many times a day. Looking at the common categories makes it easier to see why clinical display use is not one single topic.
Bedside and monitoring screens
Near a patient, a screen often shows numbers and waveforms that staff need to read quickly and from a distance. Typical needs include:
- Text and traces that stay readable from different positions in the room, which is where viewing angles matter.
- Clear alarm indications that are easy to tell apart at a glance.
- Steady operation over long periods, since many of these screens run day and night, much like any continuous operation setting.
- Surfaces that tolerate frequent wiping.
Some monitoring screens are built into the equipment. Others are separate displays that receive a signal over cables, so the quality of display connections also matters to reliability.
Records, orders and administration
Much of the screen time in health care is ordinary computer work: reading charts, entering notes, checking schedules and ordering supplies. Here the priorities look similar to any busy workplace, such as comfortable text size, sensible screen placement and glare control. Administrative work has its own screen use too, and the topic of hospital admin screens belongs mainly to scheduling, billing and registration rather than to patient-facing equipment.
Shared workstations are common. A screen that many people use in a shift is wiped often and may be touched constantly, so touchscreens in these areas have to cope with cleaning products and sometimes with gloves. The general problem of glove touch is a familiar one in any setting where people cannot use bare fingers.
Imaging and image review
Medical images are produced by many kinds of equipment and are then viewed on screens. Reviewing an image means looking at fine detail and subtle differences in shade, so these displays are generally judged on things that office users rarely think about:
- Whether brightness stays steady over time.
- Whether shades of gray are shown consistently from one screen to another.
- Whether the picture is even across the whole panel, a point related to screen uniformity.
- Whether the screen resolution is high enough for the detail in the image.
Facilities often check such displays on a schedule instead of assuming they stay as they were when installed. The details of what to check, and to what standard, are for qualified staff and the relevant guidance. Two neighboring topics, a comparison of medical-grade displays and the role of calibration in imaging, are covered in their own articles on this site.
Operating rooms and procedure areas
Procedure rooms combine bright lighting, equipment and the need for clean surfaces. Displays there may show live camera views or patient information. Placement, cleanability and reliable operation are central concerns, and the room is a demanding place for any electronic equipment. The special demands of surgical displays are a topic of their own.
Patient rooms, waiting areas and wayfinding
Not every health care screen is clinical. Waiting rooms often have information boards, queue displays or entertainment, and patient rooms may include televisions or tablets for communication and education. Large format displays can show directions and notices in lobbies. These resemble the screens in other public buildings, and the general benefits and drawbacks of public space displays apply: they can inform many people at once, but they need good content and sensible placement or they become noise.
Remote care and video
Video visits depend on the screen on each end. Patients usually use whatever phone, tablet or laptop they own, so image quality varies widely. Staff may use a dedicated cart or room setup. Because the display and camera are only one part of the experience, a good picture is helpful but does not by itself make a visit work well.
What stays constant across settings
Several themes repeat from room to room.
- Readability. Text and images must be legible under the lighting in that particular place. Ambient light changes through the day, and glare from windows or lamps can make a good screen hard to use.
- Cleanability. Screens in care settings are wiped often. Sealed surfaces, smooth fronts and resistance to cleaning agents matter, and the right cleaning method depends on the manufacturer’s instructions rather than on general advice.
- Reliability. A display that fails in the middle of a task is an inconvenience in an office and potentially more serious in care. Facilities typically plan for backups and maintenance, and these plans are made by the people responsible for the equipment.
- Consistency. When several people look at the same kind of information on different screens, similar appearance can help avoid confusion.
- Aging. Panels dim and shift in color over years. The slow change described under panel aging is one reason regular checks exist for displays used in demanding tasks.
Why general knowledge only goes so far
It is tempting to assume that a more expensive or sharper display is automatically better for medicine. In practice, suitability depends on the task, the room, the software, the maintenance routine and the rules in force. A screen that is excellent for a reading room may be a poor choice for a wet or crowded area, and the reverse is also true. Anyone responsible for choosing displays for a care setting should work with clinical staff, biomedical or facilities engineers and the applicable guidance, instead of relying on an overview such as this one.
Looking ahead
Care settings will probably keep adding screens, and display technology will keep changing, but nothing here is a prediction of what any facility will adopt. The sensible expectation is that the core concerns above, readability, cleanability, reliability and consistency, will remain the questions worth asking about any display in a clinical setting.