Wavefront aberration guided excimer laser refractive surgery

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Ametropia1: parallel light after myopia eye inflectional system, focusing on the front of retina.2: parallel light through the hyperopic eye

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Ametropia

1: parallel light after myopia eye inflectional system, focusing on the front of retina.

2: parallel light through the hyperopic eye inflectional system, focusing on the retina.

3 parallel astigmatism: light through the eye of the inflectional system, before and after the formation of two focal line.

The concept of aberration: the image of an object cannot be accurately reproduced by an optical system.

Low order aberrations and higher order aberrations of human eyes

1 low order aberrations in myopia, hyperopia and astigmatism

2 high order aberration: spherical aberration, coma and trefoil

The influence of aberration on visual quality

1 shadows

2, halo

3, star blindness

4, night vision decline

5 contrast reduction

6 glare

The significance of wavefront guided refractive surgery in a real sense

1 optometry results more accurate and has obvious advantages in detection and axial astigmatism

2 enhance the clarity of the image

3 better night vision

4 repair of residual problems after surgery

 

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