. Author manuscript; available in PMC: 2018 Jul 11.

Published in final edited form as: J Refract Surg. 2017 Jul 1;33(7):444–453. doi: 10.3928/1081597X-20170504-01

TABLE A.

Material Parameters for Anatomic Components of the Contralateral Flap-Based (FLEx) and Flapless (SMILE) Eye Models

Procedure	C₁₀ (MPa)	k₁₄ (MPa)	k₂₄
SMILE cap (7.3-mm diameter)	0.03	k_pre × 0.93	30
FLEx flap (7.9-mm diameter)	0.03	k_pre × Δ_fiber	30
Preoperative (flap/cap)	0.03	k_pre	30
SMILE/FLEx wound	0.03 × 0.005	k_pre × 0	30
SMILE/FLEx side cut	0.03 × 0.7	k_pre × 0	30
Preoperative wound/side cut for FLEx/SMILE	0.03	k_pre	30

K₁₄ = crimped fibril stiffness (MPa); k₂₄ = unitless fibril uncrimping constant; SMILE = small incision lenitcule extraction; C₁₀ = transverse shear modulus of the isotropic matrix; k_pre = preoperative crimped fibril stiffness; FLEx = femtosecond lenticule extraction; Δ_fiber = induced change in fibril stiffness within the FLEx flap region (central 7.9 mm)