Final answer:
Instrument myopia is a condition that occurs when a person's vision becomes blurred when looking through an optical instrument. It can be overcome by making adjustments through a process called accommodation or by using corrective lenses specifically designed for instrument use.
Step-by-step explanation:
Instrument myopia, also known as false nearsightedness, is a condition that occurs when a person's vision becomes blurred when looking through an optical instrument such as a microscope or telescope. This happens because these instruments have a fixed focal length, which may not match the person's individual visual needs.
To overcome instrument myopia, the person can make adjustments through a process called accommodation. This involves changing the focal length of their eye by either moving the instrument closer or further away from their eye. By finding the right position, the person can achieve clear vision through the instrument.
Another way to overcome instrument myopia is by using corrective lenses specifically designed for instrument use. These lenses compensate for the fixed focal length of the instrument and allow the person to see clearly. For example, a person with myopia may need to use a concave lens to correct their nearsightedness when using a microscope.