Ocular Photography

Ocular Photography

Opthamologists are constantly using technology to gain a better understanding of what diseases are plaguing the eye. If you have ever been to the eye doctors before for a procedure then you have probably had pictures taken of your eyes. Ocular photography or external ocular photography serves a crucial purpose in diagnosing and identifying eye diseases and problems. This article will give an overview of how external ocular works and the capabilities it has to help patients and medical professionals. Equipment There is a variety of equipment that can be used during eye exams to diagnose a wide range of problems within the eye. Some basic and common pieces of equipment that you may have seen or heard of before include a Phoropter, Retinal Camera, and Slit Lamp. Phoropter – also spelled Phoroptor is one of the most common pieces of equipment people think about when they imagine an eye doctor’s office. A Phoropter is used to test an individual’s vision and identify if they may suffer from something like nearsightedness, farsightedness, or astigmatism. The Phoropter gives the doctor the ability to adjust the intensity of a lens on the fly allowing them to analyze how your vision is corrected through the different intensities. The patient plays a integral part in this because they ultimately decide what lens they think works best for their vision by answering questions from the eye doctor as they change the lens intensity. Retinal Camera – A Retinal Camera is used to view the back of your eyes including the retina and optic disk. The optic disk holds the optic nerve which is responsible...
Small Incision Cataract Surgery

Small Incision Cataract Surgery

Cataracts are the leading cause of blindness in people. Cataracts have a variety of symptoms that can worsen over time — blurriness, double vision, difficulty seeing at night or in light, and colors that seem faded. Cataracts are a progressive ailment and should be treated properly once symptoms are being noticed. There are a number of ways that cataracts can be treated. Initial options to treat cataracts are receiving a stronger prescription on your glasses, anti-glare sunglasses, or even magnifying lenses. In more progressive cases of cataracts, a surgical procedure may need to take place in order to restore proper vision. One of the surgeries that can be performed is called a Small-incision cataract surgery, (SICS) sometimes referred to as manual small-incision cataract surgery or sutureless extra-capsular cataract extraction. This article will briefly talk about what cataracts are and how a SICS procedure can help restore vision. What Are Cataracts? Every person has a lens in their eye that helps them filter light and perceive objects. Cataracts cause your lens to become cloudy, ultimately affecting your vision. Cataracts can be caused by a number of reasons why people get cataracts, but the main cause is age. The proteins in your eye that make up the lens start to deteriorate as you age and is a gradual process. Other causes can include Diabetes, eye injury, medications, or prolonged sun exposure. I severe cases, a surgery like a SICS can be performed. Small-Incision Cataract Surgery A SICS is a proficient and cost-effective procedure that can replace your natural lens with an intraocular lens or IOL. The surgeon will have to make...
Smart Contact Lenses

Smart Contact Lenses

Recent advancements in technology have sparked the innovation of smart wearable tech. Smart watches and Virtual Reality headsets are just two examples of very popular smart technologies that have taken off over the last few years. Smart contact lenses are on the rise and in development with many tech companies. Smart contact lenses open a plethora of doors for individuals and have a significant amount of potential to help people in various ways. Health A company called Medella Health has recently been working on contact lenses that could potentially help people identify their blood glucose level. The way the contact lens would track the glucose level would be through tears of the individual. Once the information is gathered, the micro-antenna in the contact will send a message to the individual’s smartphone with the information. The contact lens has a sensor and a chip installed in it to be able to track the information. Another company called Verily is starting to create similar smart technology for patients, but instead of it being a contact lens, the product would be an injection into one’s eye. Past and Future Information gathering smart lenses are still in the preliminary stages. We have come a long with wearable smart technology before. Smart contact lenses have helped people cure their color blindness and implementing multi-focal lenses instead of monofocal. The next step would be gathering information from the human body to determine health risks such as the  low-blood-sugar which companies like Medella and Verily are developing now. Thinking even further in the future would be to incorporate Augmented Reality into contact lenses. Augmented Reality (AR)...
The Science Behind Sight

The Science Behind Sight

When you were younger, I’m sure you were explained how people see and interpret things. Typical examples of explaining sight include referring to cameras and how they operate. Demonstrating how your eyes see and how cameras work is an effective way to help people understand vision but our vision is much more complicated than that. Receptors Our eyes are light receptors. Light is reflected off of an object which is then transferred into our eyes and processed by our brains. There are many different parts of the eye that allow the process of sight to happen. The components of a human eye are complex and deserve some explanation to understand how we see. Components The areas of the eye that we use to perceive light consist of the pupil, cornea, retina, lens, and optic nerve. All of these areas work together at incredible speeds to process information from our eyes. In the retina of the eye, millions of light receptors differentiate colors and textures of objects we see. These receptors are divided into two categories, cones, and rods. The cone receptors in the retina are responsible for determining the color of the object we are perceiving. The rods in the retina give us the contrast between light and dark. The other components of the eye that were mentioned all help the receptors in the retina perceive and take in the light. Cornea & Pupil The cornea is the outermost layer of the eye. The best way to describe the cornea is to think of it as the window to the eye. The cornea allows light to safely pass through...
Why You Shouldn’t Sleep In Your Contacts

Why You Shouldn’t Sleep In Your Contacts

If you wear contact lenses, then you may know the problems that arise from having them in too long or overnight. To most people, it is common knowledge that they should not wear their contacts overnight. Sleeping in your contacts can cause a wide array of problems starting with small, almost unnoticeable irritations to severe permanent damage. In this article, we will discuss a few issues that can arise from consistently sleeping in your contacts. Cornea Your cornea is the outermost layer of your eye and is the portion of your eye that is most in contact with your contact lenses. Consistently sleeping in your contacts can lead to severe problems for your corneal health and overall sight. The cornea requires constant oxygen and the occasional flow of liquids from your glands to clean out debris and bacteria. Leaving contacts in overnight cuts off some oxygen flow to your corneas as well as tears created by your glands to filter out bacteria. Even within a short period, someone can experience dryness, irritation, or pain from dry and dirty contacts. Infection Prolonged use of contact lenses can lead to a variety of infections in the cornea. In severe cases, things like a corneal ulcer can form. The corneal ulcer forms from accumulated bacteria on the eye and can cause irritation, vision impairment, blindness, and strange sensations in the eye. Conjunctivitis or pink eye is a common infection that can be caused by dirty contact lenses. In rare cases, a person can experience Acanthamoeba keratitis which is an infection of the cornea from a single-celled organism, or ameba that invades the...