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Video Library - Cataracts

Cataract:

Is Cloudiness of the eye's natural lens. The Lens is needed to focus the light properly into the retina in the back of the eye. As the cataract develops, vision becomes blurry, cloudy, and dim at night with sensation of glare in bright sunny day.

Tests to be done before cataract surgery:

Eye Ultrasound called "A- Scan" will measure the length of the eye ball and used in computerized equations together with corneal curvature to estimate the proper power of the lens implant for the patient eye. The patient should inform the doctor about any previous LASIK or other Refractive surgery, these previous surgeries may affect the determination of the lens implant.

 

Below you will find groups of videos covering various conditions, treatments and procedures.

Cataracts

01 How the Eye Sees
02 Formation
03 Surgery
04 Yag Laser
05 IOLs
06 Monofocal IOL
07 Presbyopia
08 Monofocal Options
09 Multifocal IOLs
10 Accomodative IOLs
11 Toric IOLs
01 How the Eye Sees

02 Formation

03 Surgery

04 Yag Laser

05 IOLs

06 Monofocal IOL

07 Presbyopia

08 Monofocal Options

09 Multifocal IOLs

10 Accomodative IOLs

11 Toric IOLs

Cataract Surgery Procedure:

Removal of the cataract (called: Phacoemulsification) is done through a small incision in the cornea (no sutures is required to close) then the cataract is removed by one of 2 methods:

1- Tiny instrument similar to small pen with Ultrasound tip is used to break up the cataract and suction it out.

2-Special Laser is used to do parts of the surgery including incising the cataract, breaking up the mass of the cataract and correction of most of the astigmatism.

3-The cataract will be replaced by lens implant “Intraocular Lens IOL" which becomes permanent part of the eye. The IOL will be placed behind the iris resting on very thin membrane “part of the old cataract" and is called Posterior camber lens. In some cases the IOL is placed in front of the iris if there no enough support to place the IOL behind the iris.

 

Types of Intraocular lenses (IOLs):

All IOLs include fitters against the UV lights.

1- MonoFocal IOL:

The most common type with one power set most of the time for distance. (it can be set for near or intermediate if the patient request it). Glasses will be used to correct for near vision if the IOL set for distance. some patient elect to have " Monovision" by set the IOL for one eye for distance and the other eye for near.

 

2- Multifocal IOL:

Multiple focal zones are designed into the IOL (Intraocular lens) that enable the patient to see both near and distance vision. These IOLs reduce but not eliminate the need for reading glasses (reading glasses May be needed for very fine print). It takes 6-12 weeks to adapt to these lenses.

The success of these IOL depends to the patient pupil size and the degree of astigmatism. The possible side effects are seeing glare, halos around the light, decreased sharpness of vision (decreased contrast sensitivity) especially at night.

 

3- Toric IOL for astigmatism

Astigmatism (type of irregularity in corneal curvature) can lead to vision distortion.

Toric IOL is a monofocal IOL with correction of astigmatism built into it.

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