FITTING SOFT TORIC CL

Question 1

Factors

Answer 1

*Astigmatism
*Eyelids
*Lens design
*Lens selection
*Fit assessment

Question 2

important factors when fitting patients with soft toric lenses

Answer 2

Magnitude ans axis of astimatism

Question 3

acceptable to fit spherical soft lenses when

Answer 3

cylinder power is less than 25% of the spherical power

Question 4

better candidate because of the geometry of lens design

Answer 4

Agaist-the-rule

Question 5

eyelids play a critical role in contact lens

Answer 5

rotational position and stability

Question 6

tight lids exert ; and may cause

Answer 6

greater force and torque of the surface of the lens ‘ increased rotational instability and unpredictability

Question 7

smaller palpebral apertures are associated with

Answer 7

increased rotational stability

Question 8

it also appear to play a significant role in rotational position of contact lens

Answer 8

angles of the upper and lower lids

Question 9

when the outer canthus is higher than the inner canthus the lens tend to

Answer 9

rotate in such a ways that the inferior edge rotates temporally and vice versa

Question 10

what to consider when selecting a soft toric lens brans

Answer 10

*corneal curvature
*corneal diameter (HVID)
*corneal toricity
*refractive error
*eyelid architecture

Question 11

the goal of contact lens is to meet the

Answer 11

physical & physiologic requirement of the eye, & to address the visual requirements of the eye

Question 12

major component that contributes to the patients total astigmatism

Answer 12

Corneal toricity