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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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On Contact Lens For Short Sightedness. Cylindrical Power Reduced From The First Test To Later Ones. Error In Testing Or Power Corrected On Its Own?

Hi doc i am 25 yrs old and am wearing contact lens for the past 8 years for my short sightedness.The first time during my testing it was RT (sph 1.25 ,.cyl 0.50 ,axis 180) and LT (sph 0.50,cyl 0.50,axis 180) in the future testing after 3 yrs it was RT (sph 2.00 ,.cyl -nil-,axis 180) and LT (sph 1.50,cyl-nil-,axis 180).Later i didnt have cylindrical power till now. I want to know is it possible for my cylindrical power corrected on its own or it was an error in testing first time.kindly help me
Mon, 13 May 2013
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Ophthalmologist,  's  Response
There are two explanations for your query
1) You had very minimal cylindrical error. It appears you have started using contact
lenses at the age of 17 which are the developing years.In this phase refraction does change due to growth.
2) Prolonged use of contact lens do change the curvature of the cornea.
3) So I do not think of any error during your first eye testing. Had there been an error in initial testing you would not have been comfortable for 3 years .
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On Contact Lens For Short Sightedness. Cylindrical Power Reduced From The First Test To Later Ones. Error In Testing Or Power Corrected On Its Own?

There are two explanations for your query 1) You had very minimal cylindrical error. It appears you have started using contact lenses at the age of 17 which are the developing years.In this phase refraction does change due to growth. 2) Prolonged use of contact lens do change the curvature of the cornea. 3) So I do not think of any error during your first eye testing. Had there been an error in initial testing you would not have been comfortable for 3 years .