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Variety of contact lenses is used to correct refractive errors. Soft Contact (hydrogel) Lenses are most often used in various types of refractive errors but they have certain disadvantages. These lenses do not permit adequate Oxygen to pass through which is essential for health of cornea and hence they can be worn for limited hours, i.e 6 to 8 hours maximum and never while sleeping. The tear proteins get deposited on these lenses which limit their life to about a year. If worn for prolonged period or proper measures not taken to clean the lenses, cornea can get an ULCER which at times can result in permanent loss of vision. Disposable daily wear lenses provide safer alternative but the cost increases significantly. Since soft contact lenses are applied after cleaning with a solution which can be the cause of mild to severe allergic conjunctivitis which can become intolerable. Soft contact lenses are not ideal in eyes with high corneal astigmatism.
Merits of soft contact lenses are that they can be dispensed over the counter or purchased on line though it is not ideal. A correct curvature and power of a contact lens is determined by a contact lens specialist/ Ophthalmologist after measuring exact corneal curvature and using trial contact lens. Another merit is that these lenses can be accepted very easily since even on the first day they do not produce much of discomfort. These lenses can be worn off and on without any inconvenience. Recent introduction of Toric Contact Lenses have made them more acceptable in cases of moderate corneal astigmatism.
Breathing Contact Lenses:
These lenses are the one which permit significant amount of oxygen to pass through and hence can be worn for prolonged interval without any adverse effect on the cornea. These are of two types
- Semisoft or Extended Wear RGP Contact Lenses: These lenses are made up of FP 92 which is a semi rigid soft plastic and is highly permeable to oxygen. These lenses are excellent for high refractive errors, especially in patients who have high corneal astigmatism. Even cases with irregular cornea or Keratoconus, these lenses can be accepted with rewarding results. These lenses can only be fitted by an expert Ophthalmologist since precise measurement has to be carried out and various trial lenses have to be tried to evaluate the optimum fit. The lenses are made to measurement and the patient has to be precisely trained to fit the lenses and maintain them. As stated, the lenses can be safely worn while sleeping and there is practically no danger of corneal toxicity or infection. These lenses may last for 4-5 years. One of the demerits of these lenses is that they take 5-6 days to adopt and the patient is advised to use them regularly. They are excellent alternative to LASIK surgery.
- Silicon Hydrogel Contact Lenses: These are recent introduction of extended wear contact lenses with capacity to 'breathe' better than soft or hrdrogel contact lenses. Some of the recent Silicon Hydrogel Contact lenses introduced by Alcon and Bausch and Lomb can be worn for a week or so.
Silicon hydrogel lenses though indicated for prolonged wear but can cause mild keratitis and sometimes allergic keratitis if worn overnight. These lenses still needs lot of improvement to be free of complications
Advise: It is ideal to consult an Ophthalmologist specialized in contact lenses for fitting of a proper contact lenses. Advertised lenses some time misguide and can be damaging to the eye.
Is it harmful for the eye after Cataract surgery(I.O.L.implanted) when washed with tap water (treated with chlorine,bleaching powder etc.) regularly in the morning after waking up .
She has an allergy in her eyes since 4 years. Every year in summers she suffer itches in her eyes so much. We consult so many doctors for it but no improvement from anywhere. After that someone told me to use PYRIMON eyedrop. She use that one and a drastic change comes. Pyrimon removes itch totally. So I want to ask that it is good to use or is there any problem or side effects of it. Please tell me.
My eyes are burning when I sat continuous in front of computer. Please suggest. Me some precautions to avoid these sensations?
What is the cause for the disease keratoconus? What are its effects in our eye? If I undergone for treatment how long it Will take to recover my eye sight? What is the procedure for the operation? If I take in a treatment how long it will take for me for lasik surgery without keeping spectacles?
Hi, I visited doc as I wear high power - 1 and -1•5 from last 6 months so he prescribed to first dilate my eyes and then only again check for refractive error. When he checked he was saying my power is only -.25 and -.75. What shud I do?
I wear spectacles and Everytime I feel headache. Even After taking a proper sleep. What should I do to get rid of headache?
Some black shades are found in around my eyes (below part of eyes ). Why it is found? How it can be removed?
Styes are normally caused by a proliferation of natural bacterial flora within the eye. This causes an inflammatory reaction and is known to affect children more than adults. It resembles a pimple in exterior appearance and may grow both inside and outside of the eyelid. The symptoms of styes include redness, pain, swelling and tenderness. Though the styes do not lead to any kind of visual problems, they can cause significant discomfort.
What can cause styes?
Your eyelids have lots of tiny oil glands, which can become clogged by dead skin, dirt, or oil buildup. When a gland is blocked, bacteria can grow inside. This is what causes a stye to develop.
What are the symptoms of styes?
The most common symptom of styes includes swelling of the eyelid, redness, pain, tenderness, eyelid crusts and burning in the eye. It frequently leads to a yellowish-white discharge which becomes very uncomfortable and may also continue to drain out of the eye. Doctors recommend not to press or squeeze the styes as it may lead to further complications.
You should call your doctor if:
- The child`s eye is swollen shut
- He has a severe pain
- He has a high-grade fever
- Swelling lasts for more than 20 days
- Pus continues to drain from the eye
- His eyelid bleeds
- He has problems with his vision
Homeopathic medicines for sty are safe and effective with no side effects. They play a vital role in improving the health and immune levels of the body. The recurrence of any symptoqms in a body can be prevented by homeopathic medicines. These medicines are easy and comfortable for all age groups as they taste sweeter and give quicker results.
Styes tend to dry out on its own although applying homeopathic medication can aid in hastening the process of healing.
- Amalki: This homeopathic medicine aids in repairing damaged tissue which in turn aids the stye infection to dry out. It is recommended to add a teaspoon of Amalki, which is available in most homeopathic outlets, into a glass of pure water. Then the mixture must be left on its own for the whole night for at least 10 to 12 hours. The mixture should then be filtered and used for washing the affected eye.
- Heper Sulphur: Heper sulphur aids in speeding up the rupture of styes so that the pain is instantly relieved. This remedy is particularly suited for the styes that cause significantly red and swollen. It also aids in reducing the tenderness and swelling. In the case of some children, styes tend to secrete a liquid discharge and are extremely painful. Heper sulphur along with warm compress can be extremely helpful in relieving the pain.
- Pulsatilla: Some styes do not cause any pain but cause significant swelling and secrete a yellowish discharge. People affected with such type of styes can be significantly benefited by the use of homeopathic remedy called pulsatilla. It has also been found useful in preventing reoccurrence of styes.
- Staphisagria: Staphisagria is for chronic or recurrent styes that appear mainly on the upper eyelid. The eyes are very dry and have rheum. The corner of the eye and the edges of the eyelids may be chapped and infected.
It is important to keep the eye clean and flush it with cold water. If the pain and related symptoms do not go away after 3 to 4 days, it is best to consult a doctor for further treatments.
Eyes are believed to be the most attractive feature in a person. A pair of beautiful eyes can melt millions of hearts. Skin ageing and its consequences can throw life in jeopardy. Sagging eyelids are one such unwanted consequence. With ageing, the skin loses its elasticity to a great extent.
There is an increased skin accumulation around the upper and lower eyelids. As a result, the eyelids become sagging and droopy. Sagging eyelids can be annoying, affecting a person's overall appearance and self-confidence. In extreme cases, it interferes with the normal vision of the affected individual. Eye irritation is also common.
Thus, the problem needs to be treated at the earliest. Blepharoplasty or the eyelid surgery comes as a huge relief. Here, the surgery is mainly performed to enhance an individual's appearance. To treat sagging eyelids, it is important to get rid of the accumulated skin, loose muscles and fat pads. Procedure is done under local anesthesia.
For upper eyelids, the surgeon makes small punctures along the line of the eyelids. These punctures act as the exit points for the unwanted skin, muscles and fats. Following the removal of the skin present in excess, the punctures are carefully stitched. In case of the lower eyelids, the fat pads are removed through an incision made inside the eyelids. The excess skin can also be eliminated through an incision made along the margin of the eyelashes. If you wish to discuss about any specific problem, you can consult a Cosmetic/Plastic Surgeon.