Calculate the power of the lens in the reading glasses

Reference no: EM13547313

I was able to work out the answer to a) but I am having trouble with b) I keep coming up with something around 3 diopters and the computer says my mistake may be due to round off errors but I am pretty sure it is not because I am using the answers in my calculator to around 7 places. Any help on how to ACTUALLY DO this problem and not just the answer would be greatly appreciated. Thanks! A cataract-impaired lens in an eye may be surgically removed and replaced by a manufactured lens. The focal length required for the new lens is determined by the lens-to-retina distance, which is measured by a sonarlike device, and by the requirement that the implant provide for correct distant vision.

(a) If the distance from lens to retina is 22.6 mm, calculate the power of the implanted lens in diopters. 44.2 diopters Correct: Your answer is correct.

(b) Since there is no accommodation and the implant allows for correct distance vision, a corrective lens for close work or reading must be used. Assume a reading distance of 28.0 cm, and calculate the power of the lens in the reading glasses.

Reference no: EM13547313

Questions Cloud

How long would that standard be in meters : Since the period of a simple pendulum depends only on its length (and g), How long would that standard be, in meters

A sulfuric acid and potassium hydroxide in aqueous solution : write the balanced neutralization reaction between sulfuric acid and potassium hydroxide in aqueous solution.

How far was inital displacement from spring natural length : A 3-kg box attached to a horizontal spring (k = 1,200 N/m) undergoes simple harmonic motion. How far was the inital displacement from the spring's natural length

Define a box contains a mixture of copper and aluminum balls : A box contains a mixture of copper and aluminum balls. The box contains 100 balls that have a total mass of 2.51 kg. If the aluminum balls have a mass of 16 grams and the copper balls have a mass of 30 grams, how many balls of each are in the box

Calculate the power of the lens in the reading glasses : Since there is no accommodation and the implant allows for correct distance vision, a corrective lens for close work or reading must be used. calculate the power of the lens in the reading glasses

Explain a solution with a mole fraction of 0.012 in urea : How many grams of urea must be added to 88 milliliters of water in order to obtain a solution with a mole fraction of 0.012 in urea

Obtain by how much does the spring stretch : A spring (k = 866 N/m) is hanging from the ceiling of an elevator, and a 7.3-kg object is attached to the lower end. By how much does the spring stretch

Define mass of ore is required to make a lead sphere : If lead, which makes up 86.6% of galena and a particular ore contains 68.5% galena, what ,mass of ore is required to make a lead sphere with a 4.00 cm radius?

Explain a solution with a mole fraction of 0.012 in urea : How many grams of urea must be added to 88 milliliters of water in order to obtain a solution with a mole fraction of 0.012 in urea

User Account

All Pages