25. March 2013 06:17
Eyeglasses are nothing but corrective lenses that are used to improve the vision. Glass pieces are cut according to the prescription given by the doctor. They are cut in such a way so that when the light enters these glasses, the image that you see on the retina gets focused on the correct place. When the retina comes in contact with this light, it sends the information to the brain and the brain transforms this data into the real image.
Read on to know about the different vision problems, the reason behind them and how eyeglasses can effectively correct them.
There is a problem in the vision when the image focused on the retina is not in the appropriate position; it too far back or too far in. Farsightedness occurs in the former case while nearsightedness happens in the latter. Also, there are many people who suffer from aging vision or astigmatism and they too need the help of an eye specialist. An eye exam will help you determine what exact problem you have and then accordingly you can put on the requisite eyeglasses to correct it.
Eyeglasses are also helpful for people who are having the problem of crossed eyes. In this case, the eyes are unable to focus together. This results in the production of two of the same objects that are seen by the eyes. A person suffering from this condition experiences blurriness while seeing both the objects and none can be seen clearly.
Eyeglasses are used to correct the above mentioned problems by using the right lenses in them. There are basically two types of lenses: the plus lens and the minus lens. In case of farsightedness, a plus lens in convex shape is recommended which focuses the image on the retina. On the other hand, the minus lens in concave shape focuses the image on the retina in case of nearsightedness. The different strengths of these two lenses are utilized to correct the defect of the eyes.
In case you suffer from any vision problems, you must visit an eye specialist immediately before the problem worsens. Get the perfect eyeglasses from your optometrist in Killeen for your vision problems and do not make your eyes suffer any sort of strain. Delaying the visit to your eye care doctor will only worsen the vision and cause further complications in the eye sight.
12. March 2012 10:38
Retinopathy refers to an abnormality in the retina, often due to traumatic damage or abnormal development of blood vessels. In Central Serous Retinopathy, the condition involves the accumulation of a transparent fluid (thin and watery serum, hence the word ‘serous’), in the region under the central macula. This eye disease is believed to result from the leakage of fluid from the retina, and is 10 times more likely to affect men (aged 20-50) than women. It is a temporary condition, and is self-limiting. It can be associated with varying degrees of visual disturbances. Most patients have recurrences after the disease is resolved.
- Leakage of choroidal fluid due to the detachment of macular tissues from supporting layers.
- High levels of stress
- High levels of cortisol
- Diseases like Cushing’s syndrome and MPGN Type II kidney disease
- Administration of corticosteroids
- Microorganisms like Helicobacter Pylori
All these are potential causes, even though research has not yet been able to prove the exact causes of the disease. For instance, the fact that people with more stressful lives are more prone to the disease might be simply due to the fact that these people are more likely to notice even a slight abnormality in their eyesight and opt for a diagnosis.
- Blurring of vision
- Seeing abnormal colors in objects
- Finding objects to be smaller than they actually are
- Dark spots in vision
- Distorted vision, e.g. viewing straight objects to be crooked
- Decreased night vision
- Migraine-like headaches
- Difficulty in reading, driving, and other activities requiring visual acuity
- Some patients report normal 20/20 vision, while for others it can be as bad as 20/200. The average visual acuity of patients with the disease is 20/30.
The condition usually disappears on its own in around 6 months. However, the following treatment options are opted for to expedite recovery, or in case the symptoms persist for longer:
- Discontinuation of corticosteroid treatment
- Administration of low-dose aspirin
- Counselling for patients with psychosocial stress
- Laser photocoagulation to burn off the affected area- This can have potential hazards, and must be carried out with careful consideration, by a well-trained professional.
- Transpupillary thermotherapy- This is a safer alternative, also known as ‘cold laser’, and is effective in case of a leak in the central macula.
- Nutritional supplements like zeaxanthin and lutein
- Photodynamic therapy
For more details, contact us at Killeen Eyecare Center. We are located at 416, North Gray Street, Killeen, TX 76541, and Downtown Killeen or call us at 254-634-7805.
Eye Exams Killeen - Eye Doctor Fort Hood
7. September 2011 13:10
Optic disc drusen is an ailment that affects the eyes and overall vision of the person afflicted from it. It is a nervous disorder that causes failure of the macular region in the eyes. There are yellow deposits that are formed in the optic nerve in this disease and the symptoms around it start to manifest themselves usually when a person enters teenage. There may also be formation of calcium deposits inside the eye organs.
Causes of Optic disc drusen:
- The exact cause of this ailment has not been pinpointed by medical practitioners and scientists till date. It is believed that genetic abnormalities may be responsible for this disease. The presence of this disease is generally based on hereditary factors and is dependent on whether your forefathers suffered from this disease at some point in their lives or not.
- One of the symptoms that can help identify the presence of this disease is a swelling of the area related to the optic nerve.
- There is also a significant effect on the overall vision of the patient. There is a loss of side vision but the patient may still be able to see things clearly for effective functioning. This disease is not accompanied by a complete vision failure. However, in some cases, there may be a significant loss in the ability to see things clearly.
- In some types of Optic disc drusen, there can also be a loss in central vision. This is caused when there is a formation of new blood vessels near the optic nerve. This is but a complication of this disease that can only be observed in some patients.
- There is no sure shot cure or standardized treatment procedure that is practiced by doctors all over the world. However, there are certain prescribed treatments that may be tried, leading to different results in different patients. Laser therapy and injections of VEGF inhibitors are usually tried by most eye doctors to bring about an improvement in the condition of patients.
For more information on various eye diseases, visit us at Killeen Eyecare Center, 416 North Gray Street, downtown Killeen, Texas Or give us a call at 254-634-7805.
Eye Exams Killeen - Eye Doctor Fort Hood