8.3 Spherical Equivalent

Question 1

Does axis matter in spherical equiv

Answer 1

NO! The end goal is a diopter sphere and that means no cyl or axis

Question 2

How much of the cylinder column is added to the first sph column to get Sph equiv

Answer 2

Half the cylinder column is added to the sphere column (KEEP THE SIGNS TO ADD)

Question 3

If you take half the cyl to add to first column to get sph equiv, what is the most important thing to remember when adding the two?

Answer 3

Number Line addition of signs (positive and negative)

Question 4

Steps to sph equiv

Answer 4

Take away axis, half the cyl, keep the sign, add to the sph column , keep the sign

Question 5

Over how much cyl with the spherical equivalent not work/ still cause blurred vision

Answer 5

Over 1D cyl and SE is typically not used