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Dr. Tony Fernandez
Eye Hospital
A Super Speciality Eye Institute & Lasik Centre
A leading Superspeciality eye hospital in India
The first Blade Free Lasik Centre in Kerala
Best chosen destination in Kerala for Cataract removal surgery
Specialised in Paediatric Ophthalmology
World class optical shop & Contact lens clinic
Kerala's First Blade Free
Lasik Centre and
Superspeciality Eye Hospital
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   Contact Lenses


A contact lenses is a thin, clear disks of plastic that floats on the surface of the eye. Contact lenses correct vision like eyeglasses do, and are safe when used with care. People with otherwise healthy eyes and the ability to handle and care for them may opt for contact lenses.

Contact lenses are used to correct the same conditions that eyeglasses correct:

  • Myopia (nearsightedness);
  • Hyperopia (farsightedness);
  • Astigmatism (blurred vision due to the shape of the cornea);
  • Presbyopia (inability to see close up).
The health of your eye surface and tear film are very important to your comfort and the clarity of your vision when you are wearing contacts.
There are two general types of lenses: hard and soft. The hard lenses most commonly used today are rigid gas-permeable, or RGP. They are made of plastics and other materials such as silicone or fluoropolymers. Hard lenses hold their shape, yet allow the free flow of oxygen through the lenses to the cornea.

RGP lenses may be the best choice when the cornea has enough astigmatism (is shaped like an egg instead of an orange) that a soft lens will not provide sharp vision. They may also be preferable when a person has allergies or tends to form protein deposits on his or her contacts.

Soft lenses are the choice of most contact lens wearers. These lenses are comfortable and come in many options for how you wear them. Daily wear lenses are the least expensive, are removed nightly and are replaced on an individualized schedule. They should not be used as an extended-wear lens. Extended wear lenses are worn overnight but are removed at least weekly for thorough cleaning and disinfection. They are being recommended less frequently, since there is a greater risk of corneal infection with any overnight wear of contact lenses.

Disposable wear lenses are more expensive, but convenient. They are removed nightly and replaced on a daily, weekly or monthly basis. Disposable lenses are sometimes recommended for people with allergies and for those who tend to form deposits on their lenses.
Colored contact lenses can change the appearance of your eye color.

Toric soft contact lenses can correct astigmatism, although sometimes not as well as RGP lenses. They usually cost more than other contact lenses.
Any lens that is removed from the eye needs to be cleaned and disinfected before it is reinserted. Your doctor will discuss the best type of cleansing system for you, depending on the type of lens you use, any allergies you might have and whether or not your eye tends to form protein deposits.
Care of contact lenses includes cleaning their case, since it is a potential source of infection. The case should be rinsed with contact lens solution and allowed to dry.
Daily wear lenses should not be worn while sleeping.

Risks

Lenses that are not properly cleaned and disinfected increase the risk of eye infection. Any lens that is removed from the eye needs to be cleaned and disinfected before it is reinserted.

Lenses that are old or not properly fitted may scratch the eye or cause blood vessels to grow into the cornea. Because a lens can warp over time, and the cornea can change shape, the fit of the contact lens and the power should be re-evaluated on a regular basis. Your return visits will be scheduled depending on the condition of your eyes and visual needs.

You may not be a good candidate for contacts if you have frequent eye infections, severe allergies, dry eye that is resistant to treatment, a very dusty work environment,  an inability to handle and care for the lenses.

Any eyedrops can interact with all types of contact lenses. It is best to avoid the use of eyedrops while wearing lenses, except for wetting drops recommended by your eye doctor. Homemade saline (salt water) solutions have been linked to serious corneal infections and should not be used.

 


Do's

Don'ts

Always wash your hands with soap and rinse with clean water before handling contact lenses.

Always keep the lens-case clean by using fresh solution recommended by your Optometrist, on a daily basis.

Always keep handy, an up-to-date spare pair of prescription glasses to give your eyes rest from wearing contact lenses.

Always wear lenses before applying make-up and remove them before removing make-up.

Get your eyes examined at least once a year or as directed by your Optometrist.

Never use homemade saline / tap / distilled water or saliva to clean your lenses.

Never sleep with your daily wear contact lenses on.


Never change or mix lens care solutions/systems without consulting your Optometrist.

Avoid oil-based make-up. Avoid getting cosmetic creams and lotions on your lenses.

Remove your lenses in case of red eye or irritation. Seek medical attention immediately.




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