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Contact lenses are a medical device that are prescribed based on personal needs. Your physician discovers the power and fit of the lenses based on your vision correction also form of your eye. Apparatus employed by vision doctors contain the Snellen Chart and phoropter for visual acuity and distance correction and a keratometer to determine the curves about your cornea. These help him determine your contact prescription also are written like a series of different numbers.

Difficulty: Moderate

Instructions

Things You'll Require

Copy of your contact lens prescription

1 Read the prescription to determine proper also remaining eye. OD yous appropriate eye plus OS is remaining eye.

2 Uncover the strength of your contact lens. This can be written as power or pwr.

4 Determine the energy about the lens whereas related to the Snellen Chart. 2 website/4 web site Snellen is approximately a power regarding 1. website website, 2 website/6 web site to 2 website/1 website web site can be strength about 1.5 website to 2. web site web site, and 2 website/2 website website averages higher than 2. website website power.

5 Disregard other numbers on the prescription, such being base curve (B.C.) or diameter (dia.) seeing that they are employed to find out the accommodate regarding the lens, not your range correction.

Tips & Cautions

Snellen vision yous only an estimate and may differ in relation to individual prescriptions. Other components influence actual visual acuity, including astigmatism and additional vision problems.

Undertanding Your Contact Lens Prescription How Visual Acuity is Measured

Assets

Snellen Chart

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