Absence of the crystalline lens is called?

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Prepare for the Certified Paraoptometric Assistant (CPOA) Exam. Study with extensive flashcards and multiple choice questions with explanations. Enhance your skills and knowledge to succeed.

Multiple Choice

Absence of the crystalline lens is called?

Explanation:
Aphakia is the absence of the crystalline lens. The lens provides significant refractive power and enables accommodation; without it, the eye loses much of its focusing ability and becomes highly hyperopic, making it difficult to see clearly at distance and near without correction. Corrective options include very strong plus lenses (aphakic glasses), contact lenses, or an intraocular lens implant to restore focusing power. The other terms describe different conditions: astigmatism is due to irregular corneal curvature causing distorted vision; ametropia is a general term for any refractive error; presbyopia is age-related loss of accommodation.

Aphakia is the absence of the crystalline lens. The lens provides significant refractive power and enables accommodation; without it, the eye loses much of its focusing ability and becomes highly hyperopic, making it difficult to see clearly at distance and near without correction. Corrective options include very strong plus lenses (aphakic glasses), contact lenses, or an intraocular lens implant to restore focusing power. The other terms describe different conditions: astigmatism is due to irregular corneal curvature causing distorted vision; ametropia is a general term for any refractive error; presbyopia is age-related loss of accommodation.

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