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LASIK or PRK? Which is right for me? Animation.
LASIK or PRK? Which is right for me? Animation. Mohamed Ibrahim 65 Views • 2 years ago

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LASIK, or "laser-assisted in situ keratomileusis," is the most commonly performed laser eye surgery to treat myopia, hyperopia and astigmatism. The goal of the treatment is to reshape the cornea to correct the refractive error of the eye.
The cornea is the transparent dome-shaped structure in front of the eye. The cornea refracts light and accounts for about two-thirds of the eye's total optical power. Altering the curvature of the cornea changes the way light rays enter the eye. As a result, the light rays can be focused properly onto the retina for clearer vision.
For nearsighted people, the laser is used to flatten the cornea. For farsighted people, the cornea is made steeper. For patients with astigmatism, the laser is used to smooth the irregularly-shaped cornea into a more regular shape.
The outer layer of the cornea - the epithelium – is capable of replacing itself within a few days after being damaged or removed. The deeper layer of the cornea – the stroma, on the contrary, is a permanent corneal tissue with very limited regenerative capacity. The stroma, if reshaped by a laser, will remain that way permanently.
In this procedure, a thin, circular "FLAP" is created in the surface of the cornea to gain access to the permanent corneal tissue. This can be done with a mechanical cutting tool called a microkeratome, OR, for a blade-free experience, by a femtosecond laser. An excimer laser is then used to remove some corneal tissue to reshape the cornea. Excimer laser uses cool ultraviolet light beams to vaporize microscopic amounts of tissue in a precise manner to accurately reshape the cornea. The excimer laser is computer-controlled and is programmed based on the patient’s refractive error. The flap is then laid back in place and is allowed to heal.
LASIK eye surgery is mostly painless and can be completed within minutes. Improved vision can usually be seen overnight.

PRK, or photorefractive keratectomy, was the first type of laser eye surgery for vision correction and is the predecessor to the popular LASIK procedure. In PRK, NO flap is created. Rather, the epithelial cells on the eye surface are simply removed. An excimer laser is then used to reshape the cornea just like it does in LASIK.
The vision correction outcomes of PRK surgery are comparable to those of LASIK, but the recovery period is longer. This is because the epithelium is completely removed in PRK and it takes a few days to regenerate. PRK patients also have more discomfort and haziness of vision in the first few days after the surgery. Improved vision also takes longer to achieve.
PRK does, however, offer certain advantages. Because PRK does not involve creation of a flap, which contains both epithelial and deeper stromal tissue, the entire thickness of the stroma is available for treatment. The treatment range is therefore higher. This is particularly useful for patients with high levels of myopia or for those whose cornea is too thin for LASIK. PRK is also free of flap-related complication risks.

New Study Questions Effectiveness Of Knee Replacement Surgery | NBC Nightly News
New Study Questions Effectiveness Of Knee Replacement Surgery | NBC Nightly News Surgeon 65 Views • 2 years ago

New research from Mount Sinai Health System says these surgeries have limited effectiveness and can be economically unjustifiable when they're done on patients with less severe symptoms.
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New Study Questions Effectiveness Of Knee Replacement Surgery | NBC Nightly News

CNA Basic Nursing Skills Practice Test 15 Fully Explained Answers #Basic_Nursing_Skills
CNA Basic Nursing Skills Practice Test 15 Fully Explained Answers #Basic_Nursing_Skills nurse 65 Views • 2 years ago

#CNA_Practice_Test Welcome to This CNA practice test 15 Basic Nursing Skills Fully Explained Answers. Includes questions from 171 to 180 of These 270 questions that are very similar to the real test #CNA_EXAM.

Laparoscopic Cholecystectomy for Symptomatic Cholelithiasis - Extended (Feat. Dr. Brunt)
Laparoscopic Cholecystectomy for Symptomatic Cholelithiasis - Extended (Feat. Dr. Brunt) Surgeon 64 Views • 2 years ago

Mini-Laparoscopic Cholecystectomy with Intraoperative Cholangiogram for Symptomatic Cholelithiasis (Gallstones) - Extended
Authors: Brunt LM1, Singh R1, Yee A2
Published: September 26, 2017

AUTHOR INFORMATION
1 Department of Surgery, Washington University, St. Louis, Missouri
2 Division of Plastic and Reconstructive Surgery, Washington University, St. Louis, Missouri

DISCLOSURE
No authors have a financial interest in any of the products, devices, or drugs mentioned in this production or publication.

ABSTRACT
Minimal invasive laparoscopic cholecystectomy is the typical surgical treatment for cholelithiasis (gallstones), where patients present with a history of upper abdominal pain and episodes of biliary colic. The classic technique for minimal invasive laparoscopic cholecystectomy involves four ports: one umbilicus port, two subcostal ports, and a single epigastric port. The Society of American Gastrointestinal and Endoscopic Surgeons (SAGES) has instituted a six-step strategy to foster a universal culture of safety for cholecystectomy and minimize risk of bile duct injury. The technical steps are documented within the context of the surgical video for (1) achieving a critical view of safety for identification of the cystic duct and artery, (2) intraoperative time-out prior to management of the ductal structures, (3) recognizing the zone of significant risk of injury, and (4) routine intraoperative cholangiography for imaging of the biliary tree. In this case, the patient presented with symptomatic biliary colic due to a gallstone seen on the ultrasound in the gallbladder. The patient was managed a mini-laparoscopic cholecystectomy using 3mm ports for the epigastric and subcostal port sites with intraoperative fluoroscopic cholangiogram. Specifically, the senior author encountered a tight cystic duct preventing the insertion of the cholangiocatheter and the surgical video describes how the author managed the cystic duct for achieving a cholangiogram, in addition to the entire technical details of laparoscopic cholecystectomy.

Knee Replacement Surgery - What you need to know before, during and after
Knee Replacement Surgery - What you need to know before, during and after Surgeon 64 Views • 2 years ago

The purpose of this video is to help you learn what to expect while you are in hospital, and how to care for yourself after surgery so that you can have the best recovery possible.
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At Horizon Health Network, we are helping people be healthy! Chez le Réseau de santé Horizon, nous aidons les gens à être en santé!

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The Secret To Fixing Knee Pain
The Secret To Fixing Knee Pain Scott 64 Views • 2 years ago

Procedure of DIALYSIS
Procedure of DIALYSIS Scott 63 Views • 2 years ago

#dialysis #hemodialysis #kidneys
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STOP Icing Your Injuries!🤯
STOP Icing Your Injuries!🤯 Scott 63 Views • 2 years ago

Joe Ingles SEVERE Looking Knee Injury - Doctor Explains
Joe Ingles SEVERE Looking Knee Injury - Doctor Explains Scott 63 Views • 2 years ago

Joe Ingles suffered a very bad looking injury on Sunday night in the NBA. In this video we'll review what happened and discuss the possibilities.

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Hemodialysis
Hemodialysis Scott 63 Views • 2 years ago

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7 Active Technology Solutions Pvt.Ltd. is an educational 3D digital content provider for K-12. We also customize the content as per your requirement for companies platform providers colleges etc . 7 Active driving force "The Joy of Happy Learning" -- is what makes difference from other digital content providers. We consider Student needs, Lecturer needs and College needs in designing the 3D & 2D Animated Video Lectures. We are carrying a huge 3D Digital Library ready to use.

Kidney is most essential organ to remove nitrogenous waste materials from the body. Kidney was damaged by several human activities leads to kidney failure. Once it is damaged it cannot perform basic functions. To overcome this problem one of the best method we follows called hemodialysis. Hemodialysis is a process of removing of nitrogenous waste materials and excess fluids from the blood (collecting from arteries) through tubes containing semi permeable linings in the dialyzer and sending purified blood to the patient's body through veins. It covers the process of hemodialysis in step wise manner. Hemodialysis only performs some basic functions not all those which are performed by natural kidney like reabsorption etc..

New advice for dialysis patients
New advice for dialysis patients Scott 62 Views • 2 years ago

Dialysis patients need to choose their heart medicine carefully, as Canadian researchers say that some beta blockers are easily removed from the blood during treatment. Also, people who eat a Mediterranean diet may decrease their risk of developing kidney problems. Eboni Williams reports on the day's top health news.

Before you have LASIK, ask these questions
Before you have LASIK, ask these questions Mohamed Ibrahim 62 Views • 2 years ago

LASIK is one of the most popular elective surgeries in the United States with 95% of patients walking away satisfied with their vision, according to one FDA study. But like with any surgery, there are risks.

Lasik Eye Surgery Procedure Video
Lasik Eye Surgery Procedure Video Mohamed Ibrahim 61 Views • 2 years ago

Contact us to find out more http://www.londonvisionclinic.com/contact-us/ A video of an actual lasik eye surgery procedure taking place, using VisuMax and MEL 80 at the London Vision Clinic.

Visit http://www.londonvisionclinic.....com/are-you-suitable to find out more about the laser eye surgery process.

Doctors Warn Of Complications Surrounding LASIK Eye Surgery
Doctors Warn Of Complications Surrounding LASIK Eye Surgery Mohamed Ibrahim 61 Views • 2 years ago

An estimated 20 million LASIK procedures have been performed since 1998. The FDA website is filled with stories of complications, including pain, dizziness and detached retinas. CBS2's Chris Wragge reports.

How to tie Mishra's Knot for Laparoscopic Surgery
How to tie Mishra's Knot for Laparoscopic Surgery Surgeon 61 Views • 2 years ago

http://www.laparoscopyhospital.com
For the surgeon to develop the same level of proficiency and dexterity in the endoscopic environment as he may possess in open surgery is not a simple matter. The use of proper Mishra's Knot, are essential. Participating in an in-depth, systematic training program in a laboratory setting is essential before applying endoscopic Mishra's Knot techniques to humans. Successful acquisition of these Mishra's Knot skill requires that the surgeon be motivated to succeed and willing to invest the time and effort necessary to do so. Succumbing to the temptation of mechanical devices in lieu of acquiring the manual skills results in a questionable dependence on disposable technology and reduces the cost effectiveness of the minimally invasive approach. It is the adoption of Mishra's Knotting skills by the surgeon that will expand the surgeon's capability of performing increasingly advanced endoscopic surgical procedures.

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NCR Delhi, 122002, India
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How To Diagnose A Hernia
How To Diagnose A Hernia DrPhil 60 Views • 2 years ago

Guest surgeon Dr. Nicole Callan gives us an introduction to hernias. She discusses what a hernia is, the different types of hernias, and an introduction to treatment.

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Medical emergency
Do NOT use the Video for medical emergencies. If you have a medical emergency, call a physician or qualified healthcare provider, or CALL 911 immediately. Under no circumstances should you attempt self-treatment based on anything you have seen or read on the Video.

General information is not medical advice
The general information provided on the Video is for informational purposes only and is not professional medical advice, diagnosis, treatment, or care, nor is it intended to be a substitute therefore. Always seek the advice of your physician or other qualified health provider properly licensed to practise medicine or general healthcare in your jurisdiction concerning any questions you may have regarding any information obtained from this Video and any medical condition you believe may be relevant to you or to someone else. Never disregard professional medical advice or delay in seeking it because of something you have read on this Video. Always consult with your physician or other qualified healthcare provider before embarking on a new treatment, diet, or fitness program. Information obtained on the Video is not exhaustive and does not cover all diseases, ailments, physical conditions, or their treatment.

Laser Refractive Surgery:  How is SMILE different from LASIK and PRK? | Mitra Nejad, MD
Laser Refractive Surgery: How is SMILE different from LASIK and PRK? | Mitra Nejad, MD Mohamed Ibrahim 60 Views • 2 years ago

Mitra Nejad, MD
Associate Physician Diplomate
UCLA Stein Eye Institute, Cataract and Refractive Surgery Division

4 Exercises to Prevent Knee Injuries #shorts
4 Exercises to Prevent Knee Injuries #shorts Scott 60 Views • 2 years ago

Cardiovascular Examination - Clinical Examination of the Heart
Cardiovascular Examination - Clinical Examination of the Heart DrPhil 60 Views • 2 years ago

A successful cardiovascular exam includes visual examination, palpation of the apical impulse, auscultation of Erb's point, auscultation of the carotids, and auscultation over the four different heart valve locations (aortic, pulmonic, tricuspid, and mitral). Additionally, the radial pulse is palpated while auscultating to distinguish whether a murmur is diastolic or systolic.

Video Index:
0:13 - Inspection of the thorax
0:29 - Palpation of the apex heart beat
0:59 - Auscultation of the heart
1:16 - Auscultation of the Erb’s point
1:33 - Using Erb’s point to check the heart rate
1:45 - Systolic and diastolic heart sound identification
2:01 - Ascultating individual valves: aortic, pulmonary, tricuspid, mitral
2:41 - Ascultation of the carotids
2:54 - Ascultating the pulmonary and aortic valves
3:04 - Ascultation of the mitral valve
3:16 - Mitral valve murmurs

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What happens when you drink too much fluid on hemodialysis?
What happens when you drink too much fluid on hemodialysis? Scott 59 Views • 2 years ago

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