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What does cylindrical power mean

A 25-year-old member asked:
Dr. Richard Rosen
36 years experience Ophthalmology
Astigmatism: If the front of the eye or the internal lens is not a perfect sphere and is slightly oval, it may require special correction in one direction. This is ... Read More
5
5 thanks
Dr. Yale Kanter
61 years experience Ophthalmology
Astigmatism: This refers to the type of lens in glasses that corrects for astigmatism.
2
2 thanks

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A 47-year-old member asked:
Dr. Richard Bensinger
52 years experience Ophthalmology
Astigmatism: This refers to an ovality of the optical focusing elements of the eye. It is measured by the difference between the steeper and less curved axes and ... Read More
1
1 thank
A 46-year-old member asked:
Dr. Richard Bensinger
52 years experience Ophthalmology
Oval eye: Cylinder power (astigmatism) refers to an ovalness of the eye which must be corrected by a reverse oval in the eyeglasses or contacts. This usually c ... Read More
A 17-year-old male asked:
Dr. Amrit Singh
51 years experience Cardiology
?: ?
A male asked:
Dr. Patrick Connerly
A Verified Doctor answered
A US doctor answered Learn more
???: What do you mean by cylindrical power?
A male asked:
Dr.
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A US doctor answered Learn more
Vision: AS the lens changes its shape or size there can be change in vision resulting i change in power .
1
1 thank
A 18-year-old female asked:
Dr. Damien Luviano
18 years experience Ophthalmology
Simple formula: Spherical equivalent=sphere+1/2(cylinder). The sphere is the first number written in a glasses prescription. The second number is the cylinder. The th ... Read More
3
3 thanks
A 5-year-old female asked:
Dr. Jalal Zuberi
45 years experience Pediatrics
Hyperactivity: Some children are more hyperactive than others. The key is to differentiate what may be within normal range vs those who are in need for additional ev ... Read More
A 29-year-old female asked:
Dr. Richard Bensinger
52 years experience Ophthalmology
Not necessary: If the eye (s) is otherwise normal in all other respects an there is only a 1 diopter of cylinder, than eyeglasses are not necessary. You might be b ... Read More
1
1 thank
A 27-year-old female asked:
Dr. George Yang
27 years experience Ophthalmology
Contact lens fitting: You really need to be properly fitted for contacts. For contacts, you not only need the power, but you also need the diameter of the contact lens and ... Read More

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