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Accommodative insufficiency (AI) involves the inability of the eye to focus properly on an object. Accommodation is the adjustment of the curvature of the lens to focus on objects near and far. In this condition, amplitude of accommodation of a person is lesser compared to physiological limits for his age. [ 1 ]
A spasm of accommodation (also known as a ciliary spasm, an accommodation, or accommodative spasm) is a condition in which the ciliary muscle of the eye remains in a constant state of contraction. Normal accommodation allows the eye to "accommodate" for near-vision. However, in a state of perpetual contraction, the ciliary muscle cannot relax ...
Accommodative excess may occur secondary to convergence insufficiency also. In convergence insufficiency near point of convergence will recede, and positive fusional vergence (PFV) will reduce. So, the patient uses excessive accommodation to stimulate accommodative convergence to overcome reduced PFV.
Accommodative infacility also known as accommodative inertia [1] is the inability to change the accommodation of the eye with enough speed and accuracy to achieve normal function. This can result in visual fatigue , headaches , and difficulty reading . [ 2 ]
The following symptoms may be seen in patients with pseudomyopia Blurring of distance vision: Intermittent blurring of distant vision after prolonged near work is the main symptom of pseudomyopia. Asthenopia; Headache; Eyestrain; Photophobia [1] Esotropia: Acute onset esotropia may occur in accommodative spasm, which is the common cause of ...
This is a list of psychiatric medications used by psychiatrists and other physicians to treat mental illness or distress. The list is ordered alphabetically according to the condition or conditions, then by the generic name of each medication. The list is not exhaustive and not all drugs are used regularly in all countries.
High PRA values (>= 3.50 diopters) are considered to be diagnostic of disorders involving accommodative excess. [2] Those with accommodative insufficiency typically have PRA values below −1.50 diopters.
This is a shortened version of the sixth chapter of the ICD-9: Diseases of the Nervous System and Sense Organs.It covers ICD codes 320 to 389.The full chapter can be found on pages 215 to 258 of Volume 1, which contains all (sub)categories of the ICD-9.