Specs
Thursday, May 19, 2011
www.DEVIN.in: Spectacles for Presbyopia
Tuesday, April 26, 2011
Children with refractive errors
Modern research suggests that one in five school children have an undetected eye problem. A child's vision is fully developed by the age of 8, and without early diagnosis and treatment vision defects such as "squints" or "lazy eyes" can become permanent disabilities.
Typical warning signs are:
ü Excessive blinking
ü Squinting or screwing up the eyes to see
ü Peering closely at books and TV
ü Clumsiness
ü Poor performance at school
ü Reluctance in reading
ü Headaches
Children lead very active lives, and therefore spectacles must be comfortable and safe to wear. To this end all of our children's spectacles are supplied with Plastic lenses. Plastic lenses are lighter that tradition glass lenses and more importantly are much more resistant to breakage. This combination provides lightweight & safe spectacles
Contact Lens Practitioner has often prescribed for children of 10 years and above. The main criteria is to ensure that both children and parents are aware of the high level of care required to maintain contact lenses so that they are safe and comfortable to wear.
What to expect from new glasses...
If you are getting eyeglasses for the first time or changing your prescription, you should always allow 2-3 weeks for your eyes to adjust to the new lenses. In the beginning, you could experience mild dizziness, headaches, or even slight nausea. These symptoms are normal; however, if they persist, call your optician.
If you experience any problems with your new frames, including discomfort on the nose or ears, return to your optician for an adjustment. Also, your glasses should remain stationary on your face when you nod or turn your head quickly. If your glasses slide down your nose or tilt to one side we will be happy to adjust them for you.
How Long before your next Eye Examination?
Many people equate the need for an aye examination with replacing their glasses. They feel as long as they're seeing relatively well and their glasses are holding up, everything is okay. Unfortunately, that's not always the case. Your eyes, like the rest of your body, undergo gradual changes as you grow older.
However, unlike the rest of your body, your eyes rarely hurt when something is wrong. Undesirable changes in your eye health can occur which will not adversely affect vision in the early stages. Such is the case with glaucoma, cataracts and complications caused by high blood pressure and diabetes. Your optician will check for symptoms of these conditions to detect these problems before they worsen to the point where your vision could be affected adversely, and perhaps permanently affected.
Unlike your teeth, your eyes do not usually hurt when there is something wrong.
Caring for your spectacles
Your spectacles should be cleaned regularly. Rinse them thoroughly to remove any dust or grit that could scratch the lenses, then wash them with soap and luke-warm water, and rinse. Never use hot water as it can damage lens coatings and plastic frames. You can use a soft toothbrush to clean around nose pads and hinges.
Be careful when using hair spays or other sprays - they can coat the lenses and reduce your vision.
To put your spectacles on, hold the temples (side pieces) about half way down and push them gently over your ears. To remove your spectacles, hold them mid-way down the temples, raise them so that they clear your ears, and then slide the spectacles forward. This way you will not disturb their alignment. Always use two hands to put your spectacles on and take them off. If you use one hand you will flex the frame and over time it will not fit properly.
No matter how careful you are, you will find your spectacles periodically will need adjustment. Typically your glasses will start slipping down your nose or become uncomfortable. You should visit your optometrist to have them re-adjusted.
When you put your spectacles down always make sure that the lenses do not touch anything. This will help keep them scratch-free and bright. Better still, keep them in their protective case.
Ready Made spectacles
Ready-made spectacles are inexpensive spectacles which are sold without prescription in pharmacies and other outlets. Although ready-made spectacles are often sold as 'magnifying spectacles' they are designed to correct presbyopia. Presbyopia is a condition which affects practically all people over the age of approximately 45 years, in which the eye gradually loses the ability to adjust its focus to see near objects clearly.
Unfortunately people in this age group are also the most likely to suffer from eye diseases such as glaucoma and cataracts and are likely to neglect having their eyes examined for these diseases because they think that their problems will be fixed by the ready-made spectacles. Without a professional eye examination, many serious conditions can easily go unnoticed until vision has been irretrievably damaged.
Ready-made spectacles are also a poor consumer choice from an optical perspective. They have the same prescription in each lens but 75 per cent of people requiring a vision correction require lenses with different powers in each eye. They do not have any correction for astigmatism and 80 per cent of people require a correction for astigmatism.
Saturday, March 24, 2007
Choosing a new spectacle
Choosing a frame
The most important factor to consider is the fit of the frame. It doesn't matter how good a frame looks if you always have to push it back up your nose. Make sure that the frame fits the bridge of your nose without slipping down, remembering that the finished spectacles will be heavier than the frame when you try it on.
The frame should not rest on your cheeks. Try smiling while you are trying on the frame - if it rides up, then it is sitting on your cheeks, not your nose.
A frame should also suit your lifestyle. If you are very active, or wear your spectacles while exercising, then a smaller frame may be better, since your spectacles will be less likely to fog up than if they have a large, close-fitting frame.
Caring For your Glasses.
There are a number of things you can do to prolong the life of your glasses:-
Always keep your glasses in a case when not in use. This will protect your lenses from scratches and will also help to extend the life of your frame.
To avoid scratching, never lay your lenses directly on any type of hard or abrasive surface.
Be sure to use both hands when removing or putting on your glasses, to avoid bending the frame.
Do not allow anyone to "try on" your glasses. Your frame will have been custom fitted for you. Letting others wear your glasses, even for a moment, can cause stretching or other damage.
Clean your lenses and frame on a regular basis with warm water or an approved lens cleaner and wipe clean with a dry cloth. To avoid scratching, never wipe your lenses when they are completely dry.
Your glasses will last longer if you have them adjusted every 3-4 months. This allows us to check for loose screws or other possible problems. If your frame breaks, do not attempt to repair it with tape or glue. Take it to your optician, as we can repair it properly.
Don’t wire your lenses while they are dry; wash (or) blow off dust (or) grit instead never use paper products to wipe glasses as they can scratch the lens.
Re-Using Your Frames.
Re-Using your own frame can be a good alternative to searching for another frame that suits you, or spending a lot of money on a new frame when your budget is a little low. But befoe considering this there are a few things you should bare in mind.
Plastic frames must be heated and stretched to insert new lenses. Because the resins used in plastic frames tend to become hard and brittle with age, there is a high risk of breakage when you re-use an old frame, regaurdless of how much the frame cost when you bought it, or which manufacter made it.