Eye

Punctal plugs are removable silicone plugs that are used to keep tears from draining too quickly out of the eye. They can be inserted by an eye doctor in the office, and are particularly helpful for patients suffering from dry eye. Sometimes used empiriclly after LASIK surgery.  

Here you can see an eye with prominant meibomian glands. These glands produce oil that is important to keep the tear film from evaporating too quickly. Some people have MGD (meibomian gland dysfunction) and these glands clog up and cause eye irritation (aka. blepharitis).  

This video shows a keratin filled inclusion cyst on the eyelid. These are very common and easy to remove by opening with a 30 guage needle and expressing the contents.  

This video shows a chalazion, a non-infectious bump that can form on the eyelids, and is usually secondary to meibomian gland dysfunction. This particular chalazion is somewhat atypical in that it is draining profusely.  

Are babies more hyperopic? Yes, young children have small eyes, so that the image forms behind the retina. However, children are also able accomodate and bring the image forward to compensate for this. This is a review question I recorded for ophthobook.  

This is the first 10 minutes of the neuroophthalmology eye lecture from Ophthobook.com. This lecture covers eye-muscle and ocular movement including the direction of action for all the eye muscles and how to document your exam findings.  

Watch a woman get a 3D-printed skull For more latest tech news and product reviews SUBSCRIBE to http://www.youtube.com/user/TechyGUYS When a Dutch woman with a rare condition needed a new skull, surgeons 3D-printed one for her and put it on her brain like a cap. An entire human cranium can now be added to the growing list of 3D-printed body parts that includes a fingertip, a hand, prosthetic eyes, arms, a jaw, and even a new foot for a duck. The plastic skull was made by an Australian firm and placed on the brain of a Dutch woman at Utrecht University's University Medical Center in the Netherlands. The operation, which lasted 23 hours, took place about three months ago, and Dutch News just reported that the patient has returned to work -- plastic noggin and all. "The patient has her sight back entirely, is symptom-free, is back to work, and it is almost impossible to see that she's ever had surgery," lead neurologist Ben Verweij said in a statement. Prior to the procedure, the woman's skull was more than three times thicker than a normal skull due to a rare condition. The increased thickness caused the woman's skull to press on her brain, leading to severe headaches and vision loss. Although the report doesn't name the condition, Camurati-Engelmann disease is among the ailments that can cause skull bones to thicken. "Implants used to be made by hand in the operating theater using a sort of cement which was far from ideal," Verweij said of the procedure, according to Dutch News. "Using 3D printing we can make one to the exact size. This not only has great cosmetic advantages, but patients' brain function often recovers better than using the old method." Verweiji says that although portions of skulls have been swapped out in the past, this is the first time an entire cranium has been replaced in a patient. And I bet this is the first time you've ever seen a plastic skull get attached to a real live brain. Let me know what you think in the comments below. TAGS play station 4, play station, play station 2 emulator, play station emulator, play station 3, free play station emulator, play station network, sony play station, play station 2, xbox one, xbox, xbox 360, xbox live, xbox 360 iso, xbox emulator, xbox 360 game, gta 5 cheat xbox, xbox iso, gta 5 cheat xbox 360, xbox 360 deal, microsoft, microsoft office, microsoft window, microsoft security essentials, microsoft office 2000, 2003 edition microsoft office professional, 2003 microsoft office student, microsoft word, 2007 microsoft office system, microsoft window xp, download microsoft word, microsoft window media center, microsoft internet explorer, 2007 download microsoft word, microsoft excel, microsoft account, microsoft outlook, microsoft corporation, microsoft window 7, microsoft surface, microsoft office word, microsoft download, microsoft online, microsoft office 2010, explorer internet microsoft update, microsoft power point, microsoft update, download microsoft office, microsoft xbox 360, microsoft computer training, apple, apple store, apple itunes music store, apple itunes, apple ipad, apple iphone, apple ipod, apple laptop, apple vacation, apple ipad mini, apple fix, apple logo, apple tv, apple support community, apple software download, apple iphone 5c, apple iphone 5s, apple iphone 4, apple iphone 5, samsung galaxy, samsung, samsung galaxy s4, samsung galaxy s3, viber for samsung, samsung flight, samsung galaxy note, samsung phone, att samsung galaxy, samsung galaxy note 3, samsung kies, samsung galaxy s iii, sprint samsung galaxy, samsung galaxy s2, samsung galaxy tab 3, samsung galaxy s 4, samsung tablet, samsung galaxy tab, samsung galaxy s, att samsung, samsung galaxy note 2, samsung galaxy s5, samsung galaxy tab 2, samsung galaxy mega, samsung galaxy s3 mini, samsung galaxy s4 mini, samsung galaxy s ii, how to screen shot on samsung galaxy s4, mobile samsung, sony, sony video game, sony tv, sony vaio, sony xperia, sony play station, sony ericsson, sony xperia z, sony laptop, sony entertainment network, sony camera, sony xperia z1, sony tv live, sony psp wall, sony vegas, sony vaio laptop, sony computer, sony style, sony mobile,  

Here’s some of the papers that caught our eye this week here at HEFT EMCAST from the Emergency Medicine and Critical Care world. Many of the papers will form the foundation of our podcasts (subscribe here via iTunes).  All papers are hyperlinked to abstracts where available. →  

http://www.ophthobook.com A presentation covering common nerve palsies involving the eye. This includes 3rd nerve palsy (oculomotor), 6th nerve palsy (abduce...  

Ptosis is the lagging of an eyelid. It has 2 distinct etiologies. Sympathetics going to the eye innervate Muller's muscle, a small muscle that elevates the eyelid. The III cranial nerve also innervates a much larger muscle that elevates the eye lid: the levator palpebrae. Thus, disruption of either will cause ptosis. The ptosis from a III nerve palsy is of greater severity than the ptosis due to a lesion of the sympathetic pathway, due to the size of the muscles innervated. As an aside, the parasympathetics run with the III cranial nerve and are usually affected with an abnormal III cranial nerve.  

Researchers at Stanford University’s School of Medicine have developed two low-cost iPhone adapters that provide images of the eye that usually require specialist ophthalmology equipment costing tens of thousands of dollars. The university hopes that it will be useful both for primary care physicians in the U.S. as well as rural medical centres in developing countries.  

All eyes are on Simon Stevens as he prepares to take the reins of the NHS, but will he deliver a top-quality, low-cost service, asks Dr Kosta Manis  

Exclusive music news, big interviews, entertainment, social media trends and video from the news people at BBC Radio 1 and 1Xtra.  

Medical Protection Society Website  

Inheritance: autosomal recessive Pathology:copper incorporation into caeruloplasmin in hepatocytes and and its excretion into bile is impaired so copper is deposited into organs (firstly liver, then basal ganglia) Clinical: - Presents in children with liver failure/jaundice - Presents in young adults with CNS signs e.g. ataxia, tremor, dysarthria  - Eyes: kayser fleischer rings (gold ring around iris)   

‘Tension headaches’ Account for about 40% of all headaches Symptoms usually bilateral Tight band sensation Pressure behind the eyes May have a throbbing sensation Not sensitive to head movement No feeling of need to vomit  

 

Squints A squint (or strabismus) is a misalignment of the visual axis of the eyes.   Eye Movements Superior Rectus: Abduction and elevation Lateral Rectus: Abduction Inferior Rectus Abduction and depression  

There are many causes of a red eye. Below we have outlined the commonest and most important causes. Causes of a red eye: Conjunctivitis Corneal abrasions and ulcers Acute Iritis Scleritis Acute Glaucoma (separate notes available) Subconjunctival haemorrhage   Conjunctivitis  

In this episode, I talk about the visual processing that happens in the retina, starting with the rods and cones, going to the bipolar cells and then the ganglion cells. Watch to learn how this process works.