Historical

1990    J.G. F. Worst, G. van der Veen & L.I. Los. 

Refractive surgery for high myopia: The Worst-Fechner biconcave iris claw lens

Documenta Ophthalmologica 1990, 75:335-341.

1991    Paul U. Fechner, Jürgen Strobel, Wolfgang Wichmann. 

Correction of myopia by implantation of a concave Worst-Iris Claw Lens into phakic eyes 

Refractive & Corneal Surgery 1991, 7:286-298.

1993    Landesz. M.A., Worst, J.G.F., Siertsema, J.V., Rij, G. van. 

Negative implant: A retrospective study 

Doc Ophthalmol. 1993;83(4):261-70.