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If you have both contact lenses and glasses, you may need noticed that your prescriptions to each item differ slightly. Similarly, glasses-wearers may wonder if their regular prescription will work for contact lenses being nicely. Most folks will possess any distinct prescription for each product. As the conversion between a glasses prescription and any contact lens prescription yous complex and delicate, you should verify your prescription along with a doctor previous to ordering your new contact lenses.

Difficulty: Moderately Challenging

Instructions

Things You'll Require

1 Look at your glasses prescription. You will detect that is the prescription has pair categories: OD and OS. OD is your right vision, whilst OS is the remaining vision. The quantity subsequent each and every abbreviation will be with diopeters, which is penned seeing that D (this may well be penned or simply accepted). A prescription marked DS stands for diopters sphere, meaning that the patient has no astigmatism. The quantity that follows each abbreviation will be marked + or - ; + prescriptions are to farsighted patients, while -- prescriptions indicate nearsightedness. If the patient does have one astigmatism, a second number will follow the first to note how severe this condition is.

2 Require into account the several position regarding any contact lens. Your glasses sit down several millimeters away from your vision, whilst a contact lens (positioned directly onto your eye) will be slightly weaker. You will need to have this prescription measured in an optometrist to get the precise power difference, as various factors will affect your prescription. This is especially accurate if your prescription remains greater than +/- 4D.

3 Ignore any astigmatism if you have hard contact lenses. A difficult contact will correct the form of the eye by making it more round. Therefore, the lens will be about similar power because your glasses prescription.

4 Take astigmatisms into consideration if you have gentle contact lenses. You will require a "toric," or differently-shaped, smooth contact lens if you have at minimum .75D astigma. For this explanation, hard contact lenses may be a better choice to those with dreadful astigmatisms.

5 Go to your eye doctor. After considering numerous factors, you need to visit your eye doctor to determine the precise contact lens prescription you will require. Factors want the curvature of your vision, eye well-being conditions, plus other factors can be determined only by the specialized machines she has in her office.

References

Contact Lenses

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