In an eyesight test carried out by a constable, what condition must be met regarding lighting?

For an eyesight test conducted by a constable, it is essential that the test takes place in good lighting. This ensures that the individual being tested can clearly see the characters or symbols presented, which is crucial for accuracy. Adequate lighting minimizes shadows and enhances visibility, allowing for a fair assessment of an individual's visual acuity.

Conducting the test in dim light would hinder visibility and could lead to inaccurate results, as the person may struggle to see or discern the necessary details. Performing the test indoors is not a specific requirement; as long as the lighting conditions meet the standards for clarity, the test can be carried out in various environments. Lastly, allowing glare is counterproductive, as it can distort vision and lead to confusion, further impairing the test's effectiveness. Hence, good lighting is a fundamental aspect of properly conducting an eyesight test in a police context.