Tomey UD-800 Instruction Manual page 74

e) Entering parameters for Clinical History Method
1) Enter the corneal refractive power or radius of corneal curvature before the surgery for
correcting the refractive power in K1pre and K2pre fields.
2) Manually enter eye refractive power before refractive correction surgery in Ref.pre (S,C) (1)
and eye refractive power after refractive correction surgery in Ref.post (S,C) (2).
3) When values are entered in K1Pre, K2Pre, Ref.pre (S,C), and Ref.post (S,C), the calculation
starts automatically and the corneal refractive power or radius of corneal curvature after the
refractive power correction surgery is displayed in Kpost (3). The data can be entered
directly. However, Ref.pre (S,C) and Ref.post (S,C) cannot be entered.
4) Select the distance between the vertexes (V.D.) from the pull-down menu (4).
C.L./12.0/13.5/14.0/15.5/16.0
■ 3-42
Activated only when SRK/T Double K is selected as the formula.
(1)
(3)
(4)
(2)