Aphakia is the absence of the lens of the eye, due to surgical removal, such as in cataract surgery, a perforating wound or ulcer, or congenital anomaly. It causes a loss of accommodation, far sightedness (hyperopia), and a deep anterior chamber. Complications include detachment of the vitreous or retina, and glaucoma.
Babies are rarely born with aphakia. Occurrence most often results from surgery to remove congenital cataract (clouding of the eye's lens, which can block light from entering the eye and focusing clearly). Congenital cataracts usually develop as a result of infection of the fetus or genetic reasons. It is often difficult to identify the exact cause of these cataracts, especially if only one eye is affected.
Without the focusing power of the lens, the eye becomes very farsighted. Also, since the lens is responsible for adjusting the focus of vision to different lengths, patients with aphakia have a total loss of accommodation.
Gr. a- alfa priv + phakos, lens, anything shaped like a lens
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- David Hambling (29 May 2002). "Let the light shine in". The Guardian.
- aphakia. (n.d.) Farlex Partner Medical Dictionary. (2012). Retrieved April 13, 2016 from http://medical-dictionary.thefreedictionary.com/aphakia