It is difficult to say if there are "any" benefits, since the technology is new and very limited, and its ability to check visual acuity remains uncertain. A further drawback is that such a vision test will provide a false assessment if the exam is taken incorrectly. Many experts maintain that in their current format such tests are inappropriate for the very young, the elderly, and those with diseases requiring routine comprehensive exams. Reputable professional organizations such as the American Optometric Association (AOA) have expressed concern that such evaluations can be harmful since inaccurate information may prevent someone from seeking medical care or intervention, based on false, misleading, or inadequate findings. At best they may be a limited tool for certain demographics, to be used in conjunction with an optometrist or ophthalmologist’s approval. Under such circumstances they may be suitable for certain people looking to renew a prescription for glasses or contact lenses, when the results accord with previous findings of conventional testing. Under a professional’s guidance they may be useful as a non-diagnostic monitoring tool to be followed up with proper examinations.
