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LASIK or PRK? Which is right for me? Animation.
LASIK or PRK? Which is right for me? Animation. Mohamed Ibrahim 141 Views • 3 years ago

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Perfect for patient education purposes.
All images/videos by Alila Medical Media are for information purposes ONLY and are NOT intended to replace professional medical advice, diagnosis or treatment. Always seek the advice of a qualified healthcare provider with any questions you may have regarding a medical condition.

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.

Sex Change Operation in Thailand
Sex Change Operation in Thailand ThailandMedical Tourism 4,692 Views • 3 years ago

Thailand is the global leader for sex change operations.

Pilonidal Sinus
Pilonidal Sinus Ioannis Georgiou 4,097 Views • 3 years ago

Excision of Pilonidal Cyst. Open method.

Arm Replantation of a Child
Arm Replantation of a Child Dr Omid Liaghat 1,808 Views • 3 years ago

Arm Replantation of a Child By Dr. Omid Liaghat : https:drliaghatclinic.com

EAR INFECTION With DRAINAGE
EAR INFECTION With DRAINAGE samer kareem 11,311 Views • 3 years ago

The is a time lapse video animation of a complicated ear infection with a ruptured eardrum causing drainage with eventual healing. The video also shows why a period of hearing loss and clogged/muffled ear sensation may occur.

Pneumonia
Pneumonia samer kareem 27,560 Views • 3 years ago

How do you know if you have pneumonia? They may include: Cough. You will likely cough up mucus (sputum) from your lungs. ... Fever. Fast breathing and feeling short of breath. Shaking and "teeth-chattering" chills. Chest pain that often feels worse when you cough or breathe in. Fast heartbeat. Feeling very tired or very weak. Nausea and vomiting.

Breast Self-Examination
Breast Self-Examination al2phoenix 52,348 Views • 3 years ago

Brought to you by http://nursing-resource.com

50 Orgasms A Day
50 Orgasms A Day samer kareem 4,905 Views • 3 years ago

50 Orgasms A Day

Knee Replacement with the iBalance TKA System
Knee Replacement with the iBalance TKA System Surgeon 183 Views • 3 years ago

The OrthoIllustrated® animation for total knee replacement is an educational tool to help patients better understand the diagnosis and treatment of arthritis.

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OrthoPedia is an innovative educational website that was created for anyone interested in learning about orthopedics from the first-year student to the experienced orthopedic surgeon.

Visit https://www.orthopedia.com to experience the future of Medical Education.

Disc Herniation
Disc Herniation samer kareem 12,611 Views • 3 years ago

The vertebrae are the bony building blocks of the spine. Between each of the largest parts (bodies) of the vertebrae are the discs. Ligaments are situated around the spine and discs. The spine has seven vertebrae in the neck (cervical vertebrae), 12 vertebrae in the mid-back (thoracic vertebrae), and five vertebrae in the low back (lumbar vertebrae). In addition, in the mid-buttock, beneath the fifth lumbar vertebra, is the sacrum, followed by the tailbone (coccyx).

Abdominal Closure
Abdominal Closure Surgeon 15,283 Views • 3 years ago

A closure device and method to close the abdomen between surgical procedures and maintain a normal physiologic tension on the fascia to prevent undue retraction. In one embodiment, the closure device includes a “needled carabiner” attached to a rubberband of specific tension. The rubberband mimics the physiologic tension the abdominal wall normally experiences during daily activities and allows the abdominal compartment to expand as needed to maintain a healthy intra-abdominal pressure. The bands contract to maintain the intra-abdominal pressure and slowly pull the abdominal fascia back to the midline to facilitate surgical closure of the abdomen. In one embodiment, the “needled carabiner” includes a hinged surgical needle with a protected cap. The hinged needle is placed outside the normal suture line, thereby limiting the amount of surgical trauma the fascia endures. The strength of the rubberbands may be varied to accommodate differently sized individuals.

Tongue Tie Release Treatment
Tongue Tie Release Treatment samer kareem 27,919 Views • 3 years ago

Tongue-tie (ankyloglossia) is a condition present at birth that restricts the tongue's range of motion. With tongue-tie, an unusually short, thick or tight band of tissue (lingual frenulum) tethers the bottom of the tongue's tip to the floor of the mouth

What Is Resective Surgery for Epilepsy?
What Is Resective Surgery for Epilepsy? samer kareem 3,703 Views • 3 years ago

Epilepsy surgery is reserved for people whose seizures are not well controlled by seizure medicines. This situation is sometimes called being "medically refractory" or "drug resistant." In children, the definition of medically refractory is even more individualized to the specific child's situation. Surgery may be considered for some children after weeks to months of treatment with seizure medicines.

How to Insert a Tampon
How to Insert a Tampon samer kareem 18,074 Views • 3 years ago

How to Insert a Tampon

Mens & women Health Soultion
Mens & women Health Soultion Naveed Gujjar 2,064 Views • 3 years ago

Powerful results. Lasting effects. Medical approach. Rejuvenation therapy. Hormone treatments. Skin improvement. Revitalizing care. https://health4lifed.blogspot.com/

Brazilian Model's Leg and Butt Implants Exploded Inside Her
Brazilian Model's Leg and Butt Implants Exploded Inside Her hooda 114,586 Views • 3 years ago

Watch that video of a Brazilian Model's Leg and Butt Implants Exploded Inside Her

Post Labioplasty Massage
Post Labioplasty Massage Doctor 27,481 Views • 3 years ago

Otto Placik MD. a board certified Chicago Illinois based plastic surgeon presents instructional video on post genital surgery (labia minora reduction aka labiaplasty or labioplasty or clitoral hood reduction) massage exercises for treatment of labum minora psot surgical fibrosis or hypersensitivity. Photos pictures and video of anatomic models are reviewed . Great for patients thinking about or planning labiaplasty or vaginal cosmetic surgery

34 Weeks Pregnant
34 Weeks Pregnant samer kareem 4,463 Views • 3 years ago

During 34 week of pregnancy, the baby is getting ready for delivery, you may feel less wriggling and kicking. Watch out this video to learn more about being 34 weeks pregnant.

3rd. Annual W.B. Ingalls Memorial Seminar - Dr. Sartor
3rd. Annual W.B. Ingalls Memorial Seminar - Dr. Sartor tmanrique 9,416 Views • 3 years ago

Prostate Health and Cancer Seminar features nationally renowned physicians and scientists presenting the most current study and practices for the diagnosis and treatment of prostate cancer. This day-long program offers in-depth exploration of prostate issues that range from monitoring PSA counts to cutting-edge research to current treatment trends.

急性坏疽性阑尾炎并穿孔de 腹腔镜手术治疗
急性坏疽性阑尾炎并穿孔de 腹腔镜手术治疗 wang bzh 1,879 Views • 3 years ago

急性坏疽性阑尾炎并穿孔de 腹腔镜手术治疗

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