Male and female frequency varies with the etiology of the lens displacement. Ectopia lentis can occur at any age. It may be present at birth, or it may manifest late in life. Ocular trauma Obtain a detailed history investigating possible systemic disease associations. A pediatrician or an internal medicine physician should perform a comprehensive physical examination of patients with ectopia lentis of undetermined etiology because of the commonly associated hereditary systemic disorders.
Visual acuity varies with the degree of malpositioning of the lens.
Amblyopia is a common cause of decreased vision in congenital ectopia lentis and is preventable and treatable. Retinoscopy and refraction Careful retinoscopy and refraction is essential, often revealing myopia with astigmatism. Keratometry may help ascertain degree of corneal astigmatism. Slit lamp examination Evaluate lens position, and identify phacodonesis or cataract. Measure intraocular pressure.