Alternatives
Computer-based semi-automatic alternatives to the eye chart have been developed, but are not very common. They have several potential advantages, such as a more precise measurement and less examiner-induced bias. Some of them are also well suited for children since they resemble a video game.
While visual acuity charts are usually designed for use at 6 meters or 20 feet, there is often also a need to test a subject's vision at near or occupational tasks (like reading or computer use). For these situations near-point charts have been created.
Read more about this topic: Eye Chart
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