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

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Perfect for patient education purposes.
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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.

Laparoscopic vs. Robotic Surgeon 56 Views • 2 years ago

They are the leaders of the pack when it comes to minimally invasive surgeries. Laparoscopic and robotic. Different techniques with the same benefits.

"There's significantly less blood loss, it's a quicker procedure, quicker recovery, less scarring, less chance for post operative wound complications or infections," says Dr. Darren Miter, laparoscopic surgeon with Lee Memorial Health System.

In a laparoscopic procedure surgeons operate through a series of poke holes, manually inserting thin cutting tools and a camera to provide magnified vision. It's used in a variety of surgical specialties.

"The vast majority of gallbladder surgeries are performed laparoscopically. A single incision in the belly button, one up under the breastbone and either one or two in the right upper side of the belly. Using long skinny instruments and looking up at a TV monitor, remove the gallbladder that way," says Dr. Miter.

While laparoscopic is a hands-on approach, robotic procedures are surgeon-controlled. Working at a console, surgeons direct the robotic arms, which have super-human capabilities and 3D, hi def vision.

"I mean you have to see it to believe it, that's a great tool to have. You got a very good depth perception. Plus the other thing when you're working with your hands it's more intuitive," says Dr. Nagesh Ravipati, colorectal surgeon with Lee Memorial Health System.

The robotic system performs maneuvers the human hand can't.

"Especially if you have to do any suturing, it is so much simpler with the robots because you can just turn around 360 degrees," says Dr. Ravipati.

Robotic surgery is gaining momentum in precise procedures, including the field of cancer.

"The robot is good when you're going to operate on just one field. For rectal surgery you're in one place, it's docked. It gives you the best 3 dimensional vision," says Dr. Ravipati.

Robotic and laparoscopic. Both cutting edge options, with less cutting.

View More Health Matters video segments at leememorial.org/healthmatters/

Lee Memorial Health System in Fort Myers, FL is the largest network of medical care facilities in Southwest Florida and is highly respected for its expertise, innovation and quality of care. For nearly a century, we've been providing our community with everything from primary care treatment to highly specialized care services and robotic assisted surgeries.

Visit leememorial.org

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