Accommodation

Move the circle to see how the eye focusses the image

Hyperopia

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Positive Lens
Negative Lens
No Lens

Myopia

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myopia
Positive Lens
Negative Lens
No Lens

Presbyopia

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presbyopia
Positive Lens
Negative Lens
No Lens

Astigmatism

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Positive Lens
Negative Lens
Cylindrical Lens
No Lens