Lens Cornea Iris Optic Nerve Retina The ‘Normal’ Eye.

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Lens Cornea Iris Optic Nerve Retina The ‘Normal’ Eye The ‘Normal’ Eye

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Transcript of Lens Cornea Iris Optic Nerve Retina The ‘Normal’ Eye.

Page 1: Lens Cornea Iris Optic Nerve Retina The ‘Normal’ Eye.

Lens

Cornea

Iris

OpticNerve

Retina

The ‘Normal’ EyeThe ‘Normal’ Eye

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Light is refracted (or bent) by the cornea and lens Image focuses

on the retina

A clear image is seen

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SCATTERING OF LIGHTSCATTERING OF LIGHT

Cataract causes Scattering of light

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Mature Cataract no light enters the eye

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Central Cataract no light enters the eye

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INSCISIONINSCISION

2.8 mm OPENING

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INSCISIONINSCISION

2.8 mm OPENING

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CAPSULOREXHISISCAPSULOREXHISIS

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PHACO PROBE INSERTEDPHACO PROBE INSERTED

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LENS CUTLENS CUT

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LENS CUTLENS CUT

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LENS REMOVEDLENS REMOVED

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LENS REMOVEDLENS REMOVED

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LENS REMOVEDLENS REMOVED

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LENS REMOVEDLENS REMOVED

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LENS REMOVEDLENS REMOVED

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INTRAOCULAR LENSINTRAOCULAR LENS

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13 mm

6 mm

INTRAOCULAR LENSINTRAOCULAR LENS

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2.8 mm OPENING

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LENS FOLDEDLENS FOLDED

3 mm

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FOLDED LENS UNFOLDSFOLDED LENS UNFOLDS

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Extra Capsular Cataract ExtractionExtra Capsular Cataract Extraction

Old or Conventional Surgery

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12 mm opening made in the eye

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CAPSULOREXHISISCAPSULOREXHISIS

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CAPSULOREXHISISCAPSULOREXHISIS

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Manually lens removedManually lens removed

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Rigid lens insertedRigid lens inserted

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Sutures Placed Sutures Placed


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