Aphakia

Editor-In-Chief: Prab R Tumpati, MD
Obesity, Sleep & Internal medicine
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Aphakia
File:Starbrille 2018 PD 04.JPG
Synonyms	N/A
Pronounce	N/A
Specialty	N/A
Symptoms	Blurry vision, hyperopia, astigmatism, loss of accommodation
Complications	Retinal detachment, glaucoma, macular edema
Onset	Congenital or acquired
Duration	Permanent
Types	N/A
Causes	Surgical removal of the lens, trauma, congenital absence
Risks	Eye injury, cataract surgery
Diagnosis	Eye examination, slit lamp examination, retinoscopy
Differential diagnosis	Pseudophakia, cataract, high hyperopia
Prevention	N/A
Treatment	Corrective lenses, contact lenses, intraocular lens implant
Medication	None specific
Prognosis	N/A
Frequency	Rare
Deaths	N/A

Aphakia is the absence of the lens of the eye. It is a condition that can occur congenitally, but is more commonly the result of surgical removal of the lens, often due to cataract extraction. Aphakia leads to a loss of the eye's ability to focus, resulting in hyperopia (farsightedness) and a significant increase in the eye's refractive power.

Causes

Aphakia can be caused by several factors:

• Congenital Aphakia: A rare condition where a child is born without a lens. This can occur due to genetic factors or developmental issues during pregnancy.
• Surgical Removal: The most common cause of aphakia is the surgical removal of the lens, typically due to cataract surgery. In some cases, the lens is removed and not replaced with an intraocular lens (IOL).
• Trauma: Severe eye injuries can result in the dislocation or loss of the lens.

Symptoms

Individuals with aphakia may experience:

• Blurred Vision: Due to the loss of the lens, the eye cannot focus light properly on the retina.
• Hyperopia: The absence of the lens causes the eye to become more hyperopic, or farsighted.
• Loss of Accommodation: The ability to change focus from distant to near objects is lost.
• Glare and Halos: Increased sensitivity to light and the appearance of halos around lights.

Diagnosis

Aphakia is diagnosed through a comprehensive eye examination, which includes:

• Visual Acuity Test: To assess the clarity of vision.
• Slit-Lamp Examination: To examine the structures of the eye, including the absence of the lens.
• Retinoscopy: To determine the refractive error of the eye.

Treatment

Treatment for aphakia aims to restore vision and may include:

• Corrective Lenses: Glasses or contact lenses can be used to correct the refractive error caused by the absence of the lens.
• Intraocular Lens Implantation: In some cases, an artificial lens can be implanted to replace the missing natural lens.

Prognosis

With appropriate treatment, individuals with aphakia can achieve good visual outcomes. However, they may require ongoing adjustments to their corrective lenses and regular eye examinations to monitor their condition.

See also

• Cataract
• Intraocular lens
• Hyperopia
• Eye surgery