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If it is written as +2 Diopters it is positive, ie a converging lens. If it is written as -2 Diopters it is negative, ie a diverging lens. Diverging lenses are prescribed for myopia, or short-sightedness. Converging lenses are prescribed for hypermetropia or long-sightedness.
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∙ 15y ago
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What is the power of a convex lens with 10cm focal length?
1.0 diopters
What are diopters?
Refractive error is measured in units called diopters
When was Farsighted for Two Diopters created?
Farsighted for Two Diopters was created in 1976.
What is the duration of Farsighted for Two Diopters?
The duration of Farsighted for Two Diopters is 1.48 hours.
If someone is 3.75 in her left and 4.00 diopters in her right and her friend has 800 and 500 degrees who has worse eyesight and what is the conversion between degrees and diopters?
By degrees, you probably mean diopters. Degrees usually refers to the direction of astigmatism. Therefore, the person with -8.00 and -5.00 diopters has worse vision than the person with -3.75 and -4.00 diopters. The minus sign is used for myopia (nearsightedness), a plus sign would indicate hyperopia (farsightedness).
What is the equation of 7 to the negative 2 power as a positive?
7-2 IS positive. You do not need an equation for it. And if it were not positive, no correct equation would show it to be positive.
What is the answer to -8 to the power of 2?
Positive 64, because any squared number is positive.
Is 5 to the negative 2 power a positive or negative number?
it is positive =1/25
Is 5 to the negative 2 power positive or negative?
it is a positive fraction 5^-2=1 over 5^2 answer is 1 over 25
Meanning of positive exponent?
An exponent is the power that a number is raised to. For instance, in the expression 3^2 ("three squared"), 2 is the "exponent" and 3 is the "base." A positive exponent just means that the power is a positive number. For instance, the following expression does not involve a positive exponent: 3^(-2). Horses rule!!!!!
What is the normal corneal curvature range?
approximately 44 diopters
What does -2 to the fourth power equal?
-2x-2x-2x-2= 16 (positive)
