Articles starting with 'D':
|Degenerative Myopia |
|Technically known as myopia (my-O-pe-ah) nearsightedness is a vision problem that affects over 25 per cent of adults worldwide and it is the most common vision problem in the United States. Nearsighted people experience difficulty seeing objects at a distance but can see objects at close range. Myopia occurs because the eyeball is too long as measured from front to back. As a result light focuses in front of the retina instead of directly on it causing blurred distant objects. The more myopic yo... Read More|
|Blepharitis, a condition of inflammation of the eyelids, can be caused from several factors, including disruption of the tear film and dysfunction of glands in both upper and lower lids which contribute to dry eyes. This condition is quite common and can effect the outcome of surgical procedures such as removal of cataracts.
Another factor causing blepharitis that eyecare practitioners have become more aware of recently is infestation of the eyelash follicles by the tiny demodex mite. T... Read More|
|Gravity loss of elastic tissue in the skin and weakening of connective tissues in the eyelid frequently contribute to this sagging eyelid tissue. Excess and droopy eyelid skin and muscle is known as dermatochalasis. It is a common finding seen in elderly persons and it occurs evenly in both men and women. Gravity loss of elastic tissue in the skin and weakening of connective tissues in the eyelid frequently contribute to this sagging eyelid tissue. It is usually found in the upper eyelids bu... Read More|
|Diabetes and the Eyes |
|Diabetes and the Eyes
Vision impairment is a frequent complication of diabetes.
Right now the World Health Organization estimates that more than 150 million people worldwide have diabetes. This common condition needs special attention and constant monitoring. Generally it is a disease in which the body does not produce or properly use insulin - a hormone needed to convert sugar starches or other food into energy. The cause of diabetes is still unknown although genetics and ... Read More|
|Diabetes and Your Vision: New Treatments Now Available|
|Diabetes and Your Vision: New Treatments Now Available
Millions of Canadians and Americans could face vision loss from the effects of diabetes each year. In the US and Canada, more than 30 million people, half of whom are of working age, have this disease, the leading cause of preventable blindness each year. Worse, about 30 percent of diabetic patients are undiagnosed.
Getting a yearly comprehensive vision examination is one of the best ways to catch diabetes early and prevent o... Read More|
|Diabetes: An Overview|
Diabetes has become a major health issue in North America, with more than three million people in Canada having been diagnosed. More than half of these patients are of working age, between the ages of 25 and 64 years of age. In the US, according to the National Diabetes Statistics Report of 2014, diabetes affects 21 million people. It is estimated that almost 30% of diabetic patients are still undiagnosed. The burden on health care in both countries is becoming heavie... Read More|
|In the advanced stages connective scar tissue forms in association with new blood vessel growth causing additional distortion and blurriness. Diabetes is a condition that can interfere with the body’s ability to use and store sugar. Diabetes can also over time weaken and cause changes in the small blood vessels that nourish the eye’s light sensitive retina. When this occurs it is called diabetic retinopathy. These changes may include leaking of blood development of newly formed fragi... Read More|
|Different Types of LASIK Surgery |
Different Types of LASIK Surgery
A device called a wavefront analyzer measures the way light travels through your eyeand compares it to the way light travels through an eye with perfect vision.
1. LASIK LASIKan acronym for Laser in-situ Keratomileusis (ker’’ah-to-mih-lu-sis)is currently the most common type of laser vision correction. It can correct nearsightednessfarsightedness and astigmatism. Light is properly focused on the retina by permanently... Read More|
|Digital Lens Technology for Today's Lenses|
|Eyeglasses have been used since at least the middle ages to help scribes and copyists see better, but today the technology used to create ophthalmic quality lenses is far removed from the primitive lens grinding techniques used then.
If you are looking into purchasing new progressive or single-vision lenses in the near future, you may hear words describing them as free-form, direct-to-surface, or high-definition; lenses can be digitally designed, digitally enhanced, digitally processed or... Read More|
|Do Glasses Weaken Your Eyes? |
|When you take them off you feel “blind”. Have the glasses weakened your eyes? Rest assured the answer is no. Since getting your new glasses you probably see better than ever. But now it seems you can’t get along without them. When you take them off you feel “blind”. The obvious thought strikes: have the glasses weakened your eyes? Rest assured the answer is no.
Think about what your vision was like before you had these glasses. Though you were getting along ok... Read More|
|Do High Heat and Humidity Affect the Results of LASIK?|
| According to the latest information available: No, they DO NOT.
A study published in 2008, done at Wake Forest University Baptist Medical Center evaluated results from 191 patients using twelve variables that were suspected to affect the accuracy of LASIK surgeries, including age, sex, outdoor temperature, room temperature, and curvature of the cornea (which is the structure that LASIK changes), found that apparently, indoor humidity in the surgery suite was important. In... Read More|
|Does Wearing Glasses Weaken Your Eyes?|
|No, wearing your new glasses does not make your vision worse; in fact, since you got them, your vision is probably better than ever, making you feel like you couldn’t get along without them. When you take them off, your uncorrected vision seems worse than ever, but most of this is due to the better clarity of vision that your new glasses give you, not to the glasses having made your eyes worse.
Most of us don’t notice the tiny changes in our vision from day to day. The brain is very... Read More|
|Don't Allow Price Alone to Determine How Well You See!|
|Of course you should consider cost as a factor when you get your new glasses, but it is not the most important one. Like many other things, it is a little more complicated than that.
Your optometric physician has examined your eyes and vision system in detail to arrive at your prescription for glasses. Please allow us to help your dollars go farther by giving you some information about your eyewear, how it is made, and the measurements needed to make sure that your prescription is f... Read More|
|Dry Eye Symptoms: Causes and Treatments|
|As discussed in the Introduction article, there are three main areas that contribute to dry eye symptoms:
Inadequate tear production
Tears that evaporate too quickly from the ocular surfaces
Imbalance between the three main components of normal tears
Inadequate Tear Production
A tear film that isn’t adequate to cover the surface of the eye completely on each blink can cause discomfort and leaves the eyes open to possible secondary infection. The source of this problem can be an ... Read More|
|Dry Eye Symptoms: Introduction|
There are multiple causes behind the symptoms, so finding the specific cause and the best treatment is not as straightforward as it may seem. Also, the term “dry eyes” may actually be one symptom of other conditions, such as Sjogren’s Syndrome, Meibomian Gland Dysfunction, or, simply Dry Eye Syndrome. Dry eyes may be one aspect of a long-term medical issue, be caused by certain medications or result from short-term disruption of the ocular tissue, such a... Read More|
|Dry Eye Symptoms: Meibomian Gland Dysfunction|
|Meibomian gland dysfunction (MGD) is the term used for a family of eyelid margin disorders that cause symptoms such as redness, swelling, itching or burning, dryness, crusty lid margins, grittiness, and even the eventual loss of eyelashes.
MGD is also known as blepharitis, meibomeitis, meibomitis, blepharoconjunctivitis and several other terms. In some studies, blepharitis is considered to be caused by MGD. Currently, there are efforts being made to classify this entire range of conditi... Read More|
|Dry Eye Syndrome|
|Did you know: At age 65 the eye produces approximately 60% fewer tears than it did at age 18. Did you ever wonder why your eyes are covered with tears? It s because the delicate tissue on the surface of the eye the cornea has no blood supply - it has a tear supply instead. Rather than getting important things like oxygen and electrolytes from the blood your eyes get these substances from the watery layer of your tears. The tear layer acts as a barrier to infection keeps the surface of the eye cl... Read More|
|Dry Eye Syndrome Winter |
|Dry eyes are common in winter. This symptom is considerably seen more in older people. As one ages their retaining power of tear gland becomes weak. Tear glands are like a faucet and the tear ducts are drainpipes. Dry skin chapped lips can be healed easily but in case of eye it is complicated to pick up any drops and use. Your eyes are the window to the world if you lost the vision you lost it forever. So when it’s about eye problem always consult your ophthalmologist.
There are different... Read More|
|Dry Eyes Are More Than A Nuisance |
|Dry Eye is a condition characterized by an insufficiency in the amount or quality of tears For the millions of Americans who do suffer from DES it can get in the way of daily living. If you don t suffer from dry eye syndrome (DES) chances are you ve never heard of it. It is a condition characterized by an insufficiency in the amount or quality of tears. For the millions of Americans who do suffer from DES it can get in the way of daily living. Our eyes need tears to keep them healthy. In most pe... Read More|
|Example of Duane s Syndrome affecting the right eye. The right eye has difficulty turning outwards and the lid aperture narrows. Duane’s syndrome is an unusual eye muscle problem. It is a type of strabismus a term that describes eyes that are not properly aligned or do not move normally. With Duane’s the eyes do not always move together because the affected eye has limited movement in one direction (usually outward). Children with Duane’s syndrome are otherwise healthy and... Read More|
Dyslexia is a specific reading disability which causes difficulty in processing visual information related to reading. It can be considered as a part of a general learning disability or it can exist on its own.
Dyslexia has nothing at all to do with intelligence; in fact, most dyslexics have normal or above-normal intelligence and can understand material when it is read to them rather than when they are required to read it. In other words, their auditory learning ab... Read More|