Design and optimization of topography based customizable mini-scleral contact lenses

Cornea disorder diseases, like keratoconus, are characterized by progressive thinning and distortion of the apical cornea that leads to complex optical aberrations due to either irregular astigmatism or corneal scarring. For patients with irregular cornea, corneal contact lenses no longer fit and become intolerable with discomfort. In such cases, scleral and mini-scleral (MS) contact lenses are an attractive option. The objective of this project is to develop a mathematical model for predicting optimum profile of MS lenses that is customizable for individual irregular cornea. Analytical and numerical models will be developed to find optimum 3D topographies by solving profile matching and mitigating stress points. Three degrees of freedom will be provided on the posterior surface of MS lenses in terms of corneal, limbal and scleral clearance to conform to individual eye topographic maps. The design of optimum 3D topography for customizable contact lens development can highly beneficial for vision science.

Faculty Supervisor:

Mohammed Jalal Ahamed

Student:

Payman Rajai

Partner:

Viscon Contact Lens Manufacturing Ltd

Discipline:

Engineering - mechanical

Sector:

Advanced manufacturing

University:

Program: