Aphakia or dislocation of crystalline lens:

Aphakia or dislocation of crystalline lens:

Aphakia refers to the absence or dislocation of the crystalline lens, the natural lens inside the eye that helps focus light onto the retina. It can occur as a result of trauma, surgical removal of the lens, or congenital abnormalities. Aphakia affects the eye's ability to focus properly, leading to vision problems. 

Causes

The causes of Aphakia include:

• Surgical removal of the lens, mainly in cataract surgery, is the most common cause of aphakia.
• Traumatic subluxation or dislocation of a lens may cause aphakia.
• Congenital absence of lens matter is rare.

Symptoms

The signs and symptoms of Aphakia include:

• The main symptom of aphakia is blurred vision.
• Those with aphakia are very farsighted or can’t see well close-up, as this requires a lens.
• The eyes lose their ability to “accommodate” or change focus between distances.
• Colors may appear faded.

Diagnosis

Following tests and exams are conducted to diagnose Aphakia:

• An eye doctor can determine whether a person has aphakia by examining them and looking at their medical history.
• There may be an additional reason to suspect aphakia if the person has previously had cataract surgery.
• There are several signs that can indicate-aphakia, such as the absence of the lens in the eye, a deep anterior chamber, and a high degree of farsightedness.
• Diagnostic tests such as ultrasound biomicroscopy and optical coherence tomography can be used to confirm the diagnosis.