CONTACT LENSES

Contact lenses, also simply referred to as contacts, are thin lenses placed directly on the surface of the eyes. They are ocular prosthetic devices that can be worn to correct vision or for cosmetic or therapeutic reasons. Modern Focus offers a whole range of contact lenses to cater to all requirements, whether you wear them daily, weekly, use monthly disposables, or conventional lenses. Our inventory includes disposable soft contact, bifocal/multifocal, toric, and colored lenses. Welcome to the home of all things contact lenses.

Following the exam, you will get an opportunity to try out some contact samples to discover the best fit and material. This is done on the same day as the exam and you can also take some home with you to feel them out. Further adjustments are made in the days following the initial fitting to arrive at the most suitable fit and material.

Modern Focus’ team of eye specialists makes sure that patients know how to take proper care of their contact lenses and are well aware of the pitfalls of not doing so. This is followed up by long-term follow-ups to check on the condition of the lenses and how they are being maintained.

Primary Function

Correction of refractive error

• Corrective contact lenses work to improve vision, usually by correcting refractive error through directly focusing light so it enters the eye with ample power for clear vision.
• They are typically used to correct myopia and hypermetropia.

Correction of presbyopia

• Correction of presbyopia, the need for a reading prescription that is different from that for distance, presents fitting challenges which can be tackled through two main strategies: multifocal lenses (e.g. bifocals or progressives) and monovision (single-vision lenses.)

Other types of vision correction

• For those with certain color deficiencies, a red-tinted "X-Chrom" contact lens may be used.
• Does not restore normal color vision but allows some color-blind people to distinguish colors better.
• Red-filtering contact lenses can also be used for extreme light sensitivity in visual deficiencies such as achromatopsia.

Cosmetic contact lenses

• A cosmetic contact lens is designed to change the appearance of the eye.
• These lenses may also correct refractive error.

Therapeutic scleral lenses

• A large, firm, transparent, oxygen-permeable contact lens that rests on the sclera and creates a tear-filled vault over the cornea.
• Works to improve vision and reduce pain and light sensitivity for disorders or injuries to the eye, such as severe dry eye syndrome, aniridia, microphthalmia, corneal ectasia, keratoconus, neurotrophic keratitis (anesthetic corneas), as well as chemical and burn injuries.

Other types of vision correction

• For those with certain color deficiencies, a red-tinted "X-Chrom" contact lens may be used.
• Does not restore normal color vision but allows some color-blind people to distinguish colors better.
• Red-filtering contact lenses can also be used for extreme light sensitivity in visual deficiencies such as achromatopsia.

Therapeutic soft lenses

• Soft lenses are often used in the treatment and management of non-refractive disorders of the eye.
• Used in the treatment of conditions including bullous keratopathy, descemetocele, corneal ectasia, dry eyes, corneal abrasions and erosion, keratitis, anterior corneal dystrophy, corneal edema, Mooren's ulcer, and neurotrophic keratoconjunctivitis.

Materials

Rigid lenses (Rigid gas permeable lenses or 'RGPs' Lenses)

• Made from rigid materials that are oxygen-permeable.
• Can also be made as a front-toric, back-toric, or bitoric.
• Can be worn in more challenging environments than soft lenses.
• Correct corneal astigmatism and corneas with irregular geometries, such as those with keratoconus or post-surgical ectasias.

Soft lenses

• More flexible than rigid lenses (can be gently rolled/folded without damaging the lens.)
• Unlike rigid lenses, they don’t require a period of adaptation to reach a comfort level

Hybrid

• Typically consist of a rigid center and a soft "skirt".
• Can also be "piggybacking" of a smaller, rigid lens on the surface of a larger, soft lens.
• Deliver the vision correction benefits of a rigid lens and the comfort of a soft lens.

Wear schedule

• A "daily wear" (DW) contact lens is designed to be worn for one day and removed before sleeping.
• An "extended wear" (EW) contact lens is designed for continuous overnight wear, typically for up to 6 consecutive nights.

Replacement schedule



• Single-use lenses (called 1-day or daily disposables) are discarded after one use. In the absence of wear and tear of repeated use, the lenses can be made thinner and lighter, greatly improving their comfort. They are also useful for patients with ocular allergies, prone to infection, wear contact lenses infrequently, as well as children, as cleaning or disinfecting is not necessary, leading to improved compliance.
• Other disposable contact lenses can be replaced every two or four weeks.
• Quarterly or annual lenses, which used to be very common, are now much less so.
• Rigid gas permeable lenses are very durable and may last for several years without the need for replacement.