In Dynamic stabilization, are the inferior and superior portions of the lens made thinner or thicker?

• A. Thinner
• B. Thicker
• C. No change
• D. Variable

Answer: (A)

When the eye shifts into accommodation, the lens shape changes by redistributing its thickness under the elastic capsule and the action of the ciliary body. The central part of the lens bulges to increase refractive power, but to keep the lens volume roughly constant, the outer portions spread slightly and thin. This makes the inferior and superior regions thinner while the center thickens, which is why the correct answer is thinner.