Amplitude of Accommodation

Accommodation amplitude is a measurement of the flexibility of the eye's lens that helps determine visual acuity and prevent the development of myopia and other vision problems. This term was coined by Professor Stone.

The amplitude of accommodation is the average distance from the cornea to the retina at maximum stretch of the lens. Using this parameter, you can find out the body’s ability to accommodate. It is believed that the maximum ability to accommodate occurs in people at the age of 35; after 45 years, this parameter decreases noticeably. A decrease in amplitude indicates the possibility of developing age-related degenerative focusing.

The inability to correct the accommodation process is observed in people with myopia with presbyopia.

Amplitude of accommodative reaction

The amplitude (or volume) of the accommodative reaction is the degree of pupillary change that is established during the period from the beginning to the end of the full functional cycle of the accommodative reflex. More often measured in diopters (a conventional unit of correction). Simply put, amplitude gives an idea of ​​how much the diameter of the pupil will change when it dilates and constricts to its maximum. But the difference between the general values ​​of two cycles of amplitudes of visual reflexes is the first definition of refraction, and the second – the distance from the set