Understanding the latest developments in contact lenses technology

Contact lenses are wonderful medical

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devices that can not only elevate your vision but can also add convenience to your daily activities and save you from injury too. But looking at the latest advancement in contact lens technology, over the last decade or so comfort, breathability and vision demands have certainly increased. From introducing treatment that uses specially designed overnight contact lenses to alter the shape of the eye while sleeping to new soft multifocal designs, Dr. Poonam Yadav, Consultant Ophthalmology, Columbia Asia Hospital, Sarjapur Road helps us in exploring the latest in contact lens technology.

Overnight Contact Lenses – Is it really the new alternative to laser eye surgery?Overnight contact lenses are a good non-operative alternate to laser eye surgery for patients who are claimed to be unfit for Lasik. Their principle of action is similar to lasik that is to alter/modulate the corneal surface shape in order to correct the refractive power. They are used for various age groups starting from young children to older adults. Their action is temporary and since they are used at night they do not have any restriction on day activities (like other contact lenses), in terms of swimming, sleeping, going to the beach or splashing water in the eyes. However, they do have a limitation on powers which can be corrected. Know more Contact lenses care and maintenance – 7 common FAQs answered

What’s the latest in the development of orthokeratology (Ortho K) or overnight vision correction?

Orthokeratology or overnight contact lenses have been ideated since the 1960s when flattering the corneal surface in myopia or steeping the surface for hyperopia by rigid lenses was proposed. Since the 1980s, however, we use the reverse geometric principal in designing of the lenses which alter the corneal shape according to the power requirement. Ortho-K lenses are basically a temporary means to correct mild to moderate myopia by wearing these lenses overnight. In the daytime, the patient is free from refractive aids to do day to day activity.

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