What condition is defined by irregularities in the curvatures of the lens and/or cornea that lead to blurred vision?

What condition is defined by irregularities in the curvatures of the lens and/or cornea that lead to blurred vision?

• A. Astigmatism
• B. Glaucoma
• C. Bronchitis
• D. Dermatitis

Answer: (A)

Irregular curvatures of the cornea or lens prevent light from focusing to a single point on the retina, so vision becomes blurred or distorted. This pattern describes astigmatism, which happens when the eye’s refractive surfaces aren’t evenly curved, causing different focal points along different meridians. Because the light doesn’t converge uniformly, both near and far objects can appear unclear. Corrective lenses designed for astigmatism (toric lenses) or certain refractive surgeries help even out the focusing effect by compensating for the uneven curvature. The other terms relate to different eye or body issues that aren’t about how light is bent in the eye—glaucoma involves optic nerve damage from pressure, while bronchitis and dermatitis are respiratory and skin conditions, respectively.

Irregular curvatures of the cornea or lens prevent light from focusing to a single point on the retina, so vision becomes blurred or distorted. This pattern describes astigmatism, which happens when the eye’s refractive surfaces aren’t evenly curved, causing different focal points along different meridians. Because the light doesn’t converge uniformly, both near and far objects can appear unclear. Corrective lenses designed for astigmatism (toric lenses) or certain refractive surgeries help even out the focusing effect by compensating for the uneven curvature. The other terms relate to different eye or body issues that aren’t about how light is bent in the eye—glaucoma involves optic nerve damage from pressure, while bronchitis and dermatitis are respiratory and skin conditions, respectively.