Bifocal Contact Lenses for Presbyopia

Bifocal Contact Lenses for Presbyopia

Bifocal Contact Lenses for Presbyopia

Bifocal contact lenses are types of lenses that handle presbyopia. Addressing the said vision problem was started out by Dr. William Feinbloom long ago in 1938. The optometrist was challenged by the thought of converting ordinary contact lenses to corrective ones, like treating presbyopia. His innovation flourished and lots of individuals experiencing presbyopia have gained so much from it up until now. Soon after Dr.Feinbloom's creation, many optometrists were inspired by him so they have produced bifocal contact lenses that are more advanced.

When a person reaches his 40s or 50s, he will experience presbyopia. Presbys derives from the Greek word meaning old and opia from New Lation means man. This vision problem is characterized by inability of focusing on an object. The eye has ciliary muscle that holds the constriction and contraction of crystalline lens of the eye. As you view an object, the front and back surfaces of the lens protrudes granting the eyes to focus on objects. On the other hand, ciliary muscles in the eye of older people loose its capability to take hold of crystalline lens making the lens reduce its firmness. As a result, the eyes could not accommodate adequately

Alternating vision and simultaneous vision are the two designs of bifocal contact lenses. The alternating vision contact lens has two powers known as near-power and distant-power. The two powers are alternately utilized by the user by gazing at upward and downward directions. These days, more advanced alternating vision contact lenses are designed naturally improvising the two distinctive powers of older version of alternating vision contact lenses. The lenses are made of smaller rigid permeable contact lenses that are based in the lower eyelid. Since the lens is positioned behind the lower eyelid, the lenses are kept in place in the eyes moves downwards for near-power option.

The bifocal contact lenses that are created to view both near-power and distant- power at the same time is called simultaneous bifocals. Which means that pupil of the eyes can see the upward and downward axis at the same time. With these simultaneous bifocals, your eyes are adjusted to the power preferences according to distance. There are two designs of simultaneous bifocals, known as aspheric design and concentric ring design. Aspheric design is also known progressive design. With aspheric design, power is sent out all over the lens and the eyes will then conform to the power. The pattern for concentric ring is spherical and the power is found at center. The power in the center is then surrounded by power lenses. Location of power is characterized by materials. Distant-power design is made of gas permeable material while near-power is made of soft contact lenses.

Presbyopes or people with Presbyope, could now choose for various options of bifocal contact lenses in terms of to their tastes of characteristics, wear schedule and life span . With regards to characteristics, bifocal contact lenses can be rigid gas permeable or in soft forms. They are not just corrective but could be use for fashion reasons. Cosmetic bifocal are in various colors. When it comes to wear schedule, they can be daily, weekly of yearly.

No person is exempted of presbyopia, thus we have to deal with it and choose the ideal bifocal contact lenses for remedy . Reading is a daily pursuit and sacrificing it without having bifocal contact lenses would be too impractical.

Bifocal Contact Lenses for Presbyopia

By: Clinton Bernat

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