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Stephanie Doherty , An Interactive Mind Map on Cataracts and The History of Cataract Surgery

Cataracts and the History of Cataract Surgery
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Stephanie Doherty

on 22 March 2013

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Transcript of Stephanie Doherty , An Interactive Mind Map on Cataracts and The History of Cataract Surgery

Needling
1753-Samuel Sharp performed Intracapsular
Cataract surgery. 1840-General Anesthesia introduced for general Surgery 1884- General Anesthesia introduced for Ophthalmic Surgery . Topical (Cocaine) 1940 Harold Ridley Introduces Intraocular Lens 1957 – Barraquer of Spain, enzymatically dissolved zonules 1967- Charles Kelman introduced Phacoemulsification 1975-
Kelman designed his own IOL 1980’s –
Gimbel perfected continuous curvilinear capsulorhexis 1980-
T Mazzocco introduced First fold able lens 2000's- Advances in intraocular lenses; Multifocal,
Accommodating, Filters 2008- First Laser Refractive Cataract Surery, using femtosecond laser 1961-
Krawicz of Poland
introduced
Cryo-Surgery 1974- Compared Phacoemulsification with normal cataract surgery 1984- Phacoemulsification was approved 2009- Alcon LenSx approved for Cataract What are Cataracts? Types of Cataracts 1867- Henry Williard Willams- The use of Sutures for Cataract Surgery 1748- Jacques Daniel
(Paris) First extracapsular Cataract Removal Erysiphake (Phacoerysis) was used in Barcelona 1917 and New Zeland 1920 A motorised bomb produced the required suction force 1928-
Elshnig popularised Retrobulbar anesthesia Sutures;
Silk: Williams (1865)
Conjunctival: (1880) J.A. Barraquer
Corneoscleral: Kalt (1894) 1795- Johannes Virgilius Casamaata, glass lens fell into vitreous Ridley discovered alongside Rayner (Brighton) that when plexigas entered the eye of spit fire pilots it did not cause harm too the eye. From this discovery the IOL concept evolved. http://www.wliw.org/embed-player?pid=l8WZckFRjp3rqXaOjxUHiSNlM3jt_DB0&share=true An Interactive Mind Map On
Cataracts and
The History Of Cataract Surgery Intra Ocular Lens Design Materials Types Patient satisfaction and Expected Outcomes What to consider when choosing IOL. Present Cataract Surgery Objectives
By the end of this section on Cataract Surgery you should be able to understand;
Why cataract surgery is performed?
Pre and post Cataract Surgery procedures
Current Cataract Surgery procedures and how they have evolved.
Complications following Cataract Surgery
Risks which indicate alternative cataract surgery procedures to be employed. Smaller Incision Surgery How is Surgery Performed Post Surgery Assessment Complications Cataracts Cataract surgery is among the most common and most successful surgical procedure performed today with very few complications. Evolution of cataract Surgery This section will cover;
Structure of the Crystalline lens
How Cataracts are formed
Different causes of cataracts
Different types of cataracts 5th Century 1800's 1900's 2000's Present This link will redirect you to a web tool were you can create your own mind map and log what you have learned whilst using this CAL.

It allows you to summarize and log what you have learned through using the CAL and to quickly pick up were you have left off. Early reference to cataract Surgery recorded in Sanskirt manuscripts, practiced by Surgeon Susruta (India) Pliny (23-79 AD) recorded that Hyoscyamus (Henbane, an atropine like herb) was used to dilate the pupil for couching
Needling method involved the breaking up of the cataract into smaller pieces facilitating absorption. Bronze instruments used for Needling procedure. Couching Needling:

29AD in Iraq Greece and Egypt Extra capsular Surgery Begining of IOL Carol Koller Ignacio Barraquer designed a sucking cup and a vacuum producing device (erysiphake) to facilitate the extraction of crystalline lens. Phacoerysis Erysiphake Couching Needling Intra Capsular Catarct Surgery Phacoemulsification Phacoerysis Topical Anesthesia Continuous Capsulorhexis Sutures Cryo-Surgery Foldable IOL'S Laser Intraocular lenses Extracapsular Catarct Surgery Why is cataract surgery performed ? Pre Surgery Assessment Intraocular lens positioning What Causes Cataracts? To restore vision and meet the patients visual needs
Achieve desired refractive outcome
Improve quality of life Cataract is a major cause of worldwide blindness with 51% of worldwide blindness caused by cataract. (WHO 2012) Current Surgical techniques have excellent prognosis Intraocular Lens power Calculation

Eyes axial length(AL) (Biometry
Corneal Power (K)
Estimated lens positioning
Anterior chamber constant

Formula
SRK equation
Hoffer-Q formula
Holladay Patients instruction prior surgery;
Instill drops 3 days prior- Antibiotic (Zymar), Anti inflammatory- (Acular,Xibrom) 4 times daily.
Fast for 6 hours before surgery Haptics Optics Objectives
How the design of the Intraocular lens has developed.
The benefits of new IOL materials
Intraocular lens options available
Intraocular positioning and implantation techniques
What to consider when choosing an intraocular lens. This link will redirect you
to the "University Changes "
group were you can ask
and answer questions in a
discussion forum with
your fellow peers. Self evaluation Quiz section Cataracts Crystalline lens Cataract Surgery History of Cataract Surgery Please take the time to complete this feedback survey.
Many thanks Just for Fun!!!
Click on the joystick icon
to follow a link were you can
play a game and carry out your
own cataract surgery. by Stephanie Doherty Lens Structure (Lundstrom et al 2013) (RCO 2010) (RCO 2010) (ROC 2010) Knobble C (2010)
Full transcript