Spasm of Accommodation

Spasm of Accommodation

The eye’s ability to adapt in accordance to the distance of the visualized objects is known as ‘accommodation.’ Spasm of accommodation is a condition in which the ciliary muscle remains in a state of constant contraction even when not necessary. A state of prolonged contraction of ciliary muscle results in pseudomyopia where the lens is in a state of shortsightedness in varying degrees. The process of accommodation is carried out by the coordination between the lens, the ciliary muscles and the Zinn’s zonule. When seeing nearby objects, the Zinn’s zonules relax, the ciliary muscles contract, and the lens becomes convex. During distant vision, all these structures come back to their relaxed state. In spasm of accommodation, the ciliary muscle remains contracted even when it is not required.

Causes and risk factors

Several unhealthy practices such as reading from an improper distance, watching excessive television and lack of physical activity can trigger an accommodation spasm. Apart from these, improper nutrition, weak muscles and intake of certain medications also hamper the process of accommodation.

Clinical presentation

A person having spasm of accommodation experiences eye fatigue very easily when performing near work. The eyes become red and cause a burning sensation. Headaches, blurring of vision, and diplopia (double vision) are the other known symptoms.

Investigations

Spasm of accommodation can be diagnosed on the basis of the patient’s symptoms and a complete ophthalmic examination.

Treatment

All incorrect practices related to the patient’s eyesight must be corrected. Proper lighting, correct posture, good nutrition, and adequate physical activity is recommended.

Any underlying disorders leading to the spasm of accommodation must be corrected. Eye exercises are also recommended.

When to contact a doctor

Contact a doctor as soon as you experience blurred vision, diplopia, or any other ocular symptoms.

Systems involved

Ophthalmology.

Organs involved

Eyes

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