PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

33
PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The ‘Normal’ Eye

Transcript of PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

Page 1: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

Lens

Cornea

Iris

OpticNerve

Retina

The ‘Normal’ Eye

Page 2: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

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

on the retina

A clear image is seen

Page 3: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

SCATTERING OF LIGHT

Cataract causes Scattering of light

Page 4: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

Mature Cataract no light enters the eye

Person in not able to see any thing

Page 5: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

Central Cataract no light enters the eye

Here also the person is not able to see anything

Though the cataract is not mature

Page 6: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

Latest technique to remove the cataratatous lens through a small

key hole opening called

Page 7: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

INCISION

2.2 mm small self sealing OPENING

Page 8: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

INCISION

anterior layer of the lens is removed CAPSULOREXHISIS

Page 9: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

CAPSULOREXHISIS

Page 10: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

PHACO PROBE INSERTED

A phaco probe is inserted which uses ultrasound to cut the lens into small pieces

Page 11: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

LENS CUT

A phaco probe is inserted which uses ultrasound to cut the lens into small pieces

Page 12: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

LENS CUT

phaco probe is inserted which uses ultrasound to cut the lens into small pieces

Page 13: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

LENS REMOVED

phaco probe removes the cut pieces of the lens

Page 14: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

LENS REMOVED

phaco probe removes the cut pieces of the lens

Page 15: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

LENS REMOVED

phaco probe removes the cut pieces of the lens

Page 16: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

LENS REMOVED

phaco probe removes the cut pieces of the lens

Page 17: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

LENS REMOVED

All pieces are removed

Page 18: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

FOLDABLE INTRAOCULAR LENS

Page 19: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

13 mm

6 mm

FOLDABLE INTRAOCULAR LENS

Introocular lens is 13 x 6 mm

Page 20: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

FOLDABLE INTRAOCULAR LENS

OPENING IS ONLY 2.2 mm

Page 21: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

LENS FOLDED

3 mm

Intraocular lens is folded

Page 22: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

This intraocular lens is injected through the 2.2 mm opening

Page 23: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

FOLDED LENS UNFOLDSThe lens unfolds like a flower inside the eye

Page 24: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

ADVANTAGES OF PHACOEMULSIFICATION

The surgery is• Stitch less• Bloodless• Painless• Controlled • No injection • No eyepad

 

It helps Patient’s•  Early rehabilitation • Less post operative

discomfort• Less induced astigmatism• Minimum post operative

restriction• More satisfied

Page 25: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

Extra Capsular Cataract Extraction

Old or Conventional Surgery

Page 26: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

12 mm opening made in the eye

Page 27: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

CAPSULOREXHISIS

anterior layer of the lens is removed

Page 28: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

CAPSULOREXHISIS

Page 29: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

Manually lens removed

Page 30: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

Rigid lens inserted

Page 31: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

Page 32: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

Page 33: PRADNYA NETHRALAYA Lens Cornea Iris Optic Nerve Retina The Normal Eye.

PRADNYA NETHRALAYA

Sutures Placed