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EdgarsChainsaw t1_j1xhqab wrote

An MRI can do an excellent job of mapping the shape of an eye in 3D, and computers are great at calculating how far away the focal point of the eye lens is from the optic nerve. Our eyeballs start out about 1.5 cm and grow slightly until they reach about 2.5 cm in our teenage years, with much of that growth coming in the first year of life.

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confusedinthegroove t1_j20ede6 wrote

An MRI would never be used to measure focusing properties of the eye in a clinical setting. It would be a very expensive, time consuming and “invasive” (probably not the right word) way to measure the length of the eye but I doubt it could measure the focusing power of the cornea or lens.

Autorefraction or retinoscopy would measure the focusing power of the whole eye. You can derive the power of the lens from biometry (measures the length of the eye and focusing power of the cornea).

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EdgarsChainsaw t1_j20fdbh wrote

>An MRI would never be used to measure focusing properties of the eye in a clinical setting.

Not clinically, no. But for research purposes a group could absolutely write a grant proposal to study development of the eye in early childhood.

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