In recent months, a piece of news has caught the attention of millions of people with presbyopia: the approval in the United States of eye drops capable of improving near vision for several hours a day.
The treatment works through an active ingredient that strongly contracts the pupil. This mechanism, described as the “pinhole effect,” is similar to how a camera narrows its diaphragm aperture: by reducing the amount of incoming light, the depth of field increases, allowing near objects to appear sharper without the interference of a prescription lens. The effect may last up to ten hours after a single application.
Are drops a medicine to cure presbyopia?
At L’Atelier Ópticas, we believe it is important to bring clarity to the wave of eye-catching headlines. In either case these drops do not cure presbyopia; rather, they create a temporary optical effect by contracting the pupil. Presbyopia is a natural process, linked to the aging of the crystalline lens, which over time loses elasticity and accommodative capacity. This means that although the drops may help in certain contexts to improve near vision without glasses for a few hours, they do not reverse the physiological process of aging eyes. Moreover, long-term use raises concerns: continuously reducing the amount of light entering the eye could affect visual quality in low-light conditions, and the long-term effects of daily application are not yet known.
In ophthalmology, miotic drugs —to which these drops belong— have been used for decades in specific situations and with clear medical purposes. What is new today is their marketing as a temporary alternative to glasses, something that generates enthusiasm but, we believe, also requires caution.
Our experts have emphasized that innovation in vision care is always welcome, but it is essential to separate striking headlines from clinical reality. Glasses, multifocal contact lenses, or refractive surgery remain the safest and most effective solutions to address presbyopia.
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