BIFOCAL CONTACT LENSES
Bifocal contact lenses are designed to give good vision to people who have a condition called presbyopia.
The key sign that you're developing presbyopia is that you need to hold reading material, like a menu or
newspaper, farther from your eyes to see it clearly.
Bifocal contact lenses are available in both soft and rigid gas permeable (GP) materials, and some can be
worn on a disposable basis. That means you can have the convenience of throwing the lenses out at specified
intervals (even daily, in some cases) and replacing them with fresh, new lenses.
TORIC CONTACT LENSES
Toric contact lenses are made from the same materials as regular ("spherical") contact lenses,
so they can be either soft or RGP. The difference is in the design of the lens. Toric lenses have two powers in
them, created with curvatures at different angles (one for astigmatism, the other for either myopia or
hyperopic). There's also a mechanism to keep the contact lens relatively stable on the eye when you blink or
look around. To provide crisp vision, toric contact lenses cannot rotate on your eye.
Number of Toric Brands are available ranging from conventional Soft lenses to Disposable lenses ( 15 day,
Monthly and Daily). Some toric lenses are even available in Silicone Hydrogel material.
Prosthetic contact lenses mask flaws and improve the appearance of an eye disfigured from a birth defect,
trauma, or eye disease. If certain structures of the injured or disfigured eye also fail to function properly,
these special contact lenses can also be designed to block excess light from reaching the back of the eye and
causing vision problems. Many different injuries, conditions, or infections can lead to disfigurement of the eye
and leave an individual feeling self-conscious about appearance. Prosthetic lenses specially designed to match
the other eye as closely as possible can make the disfigured eye less conspicuous.
Eye conditions and accompanying disfigurement that may benefit from use of a prosthetic contact lens
- Incomplete formation of the pupil (aniridia),
- Lack of pigment or colour in the eye (albinism),
- Double vision (diplopia),
- Disfigurement of the eye surface (cornea) from trauma.
- Involuntary shaking of the eye occurs in a condition known as nystagmus, prosthetic contact lenses can
be used to mask eye movement and improve appearance.
- Colored contact lenses known as occluders also may be prescribed to block vision in the stronger eye
of an infant or child who has amblyopia, as a way of strengthening vision in the weaker eye. This method is
useful also because younger children may remove eye patches and disrupt therapy that involves blocking vision
in the stronger eye.