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Doctor insights on: Difference Between Glasses Contacts Prescription

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Is there a difference between a prescription for glasses and contacts?

Is there a difference between a prescription for glasses and contacts?

Sometimes: Eyeglass prescriptions and contact lens prescriptions sometimes look quite different. You cannot substitute one for the other but your ophthalmologist will write the proper one for you visual needs so the optician can fit your glasses or the ophthalmologist can order the proper contacts. ...Read more

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Dr. Tim Conrad
739 doctors shared insights

Glasses (Definition)

Glasses is a term that describes a pair of lenses that are placed in a frame to be worn to correct faulty vision ...Read more


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How come my I have different prescriptions for my glasses and contacts?

How come my I have different prescriptions for my glasses and contacts?

Lens prescriptions: Contacts sit directly on the cornea. Glasses are in front of the cornea and therefore the power of the two differ in focusing an image on the retina. ...Read more

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Are glasses and contacts prescriptions the same number?

Different: They are different. Often the overall power will be similar or the same, but contact lenses require more specifications, such as the curvature of the lens as well as type of material. ...Read more

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My glasses are -7.25 what prescription would my contacts be?

My glasses are -7.25 what prescription would my contacts be?

Not enough info: In order to fit contact lenses to your eyes, you need the corneal curvature in addition to the glasses power. Also a discussion of your vision goals, such as any need to see well at near and distance versus distance only, is used to determine the initial contact lens parameters. Your eye care provider will make these measurements. ...Read more

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Can you tell me if i switch from glasses(prism lens) to contacts(different prescription) will that cause unusual discomfort?

Can you tell me if i switch from glasses(prism lens) to contacts(different prescription) will that cause unusual discomfort?

Depends: If you have double vision when you don't wear your glasses with prism, then you will have it with contact lenses. If double vision is not a problem for you, then contacts will likely work. ...Read more

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Can you tell me if you switch from glasses(prism lens) to contacts(different prescription) will that cause unusual discomfort?

Can you tell me if you switch from glasses(prism lens) to contacts(different prescription) will that cause unusual discomfort?

It can: Contact lenses do not correct for ocular misalignment like prism glasses can. If you need prism to avoid discomfort, then contact lenses are not a good choice for you. ...Read more

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Should i order contacts online with the prescription of my glasses?

Non: You need a few numbers that are parameters for the fit of you eye i.e. The base curve, diameter and an adjusted power for lens effectivity if higher power then 5 diopters. ...Read more