Doctors, however, can often use a cosmetic eye shell to make it look more natural.

医生也会使用化妆品假眼，使它看起来更自然。

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The result shows that eye with gradient-refractive-index-lens and that with shell-lens can get equivalent spherical aberration results.

具有层状结构晶状体的眼睛和具有折射率连续变化的晶状体的眼睛能够给出等价的球差结果。

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I've had my eye on a Shell-Gel series case from Ballistic, but I'm still in need of suggestions.

ENGADGET: Ask Engadget: best case for the Samsung Galaxy S III? Mobile