Accuracy of the objective autorefractometer (A.R.). Nklek.1100 in determination.
of correction for refractive errors was studied in 1200 eyes of
600 patients. A.R. spherical power readings were correct in 32.55% of
eyes, over correct from 0.25 to o.50 D. in 55.01% and > 0.75 D. in 9.85%,
while it was undercorrect from 0.25 to 0.50 D. in 2.59%. Cylinderical power
readings were correct in 29.12 %, over con-ect from 0.25 to 0.50 D. in
63.31% and > 0.75 D in 6.9%, while it was under correct in 0.67%.
Accuracy of spherical power determination in young age was less than
old age, while patients age had no effect on cylinderical power. A.R was
accurate in cylinderical axis determination in 94.35% of eyes.
Objective autorefractometer could be considered a preliminary rapid
guide in determination of correction for refractive errors, however, its
readings should not be prescribed without checking its subjective acceptance
by the patient. |
