US 2019/0104210 A1 · METHOD AND MEANS FOR EVALUATING TORIC CONTACT LENS ROTATIONAL STABILITY

Abstract

The present invention is directed to a method and means for enabling contact lens wearers to photograph their own eyes using an electronic device with a camera such as an iPhone with a macro lens, for example, Olloclip® Macro Pro Lens Set 7× lens, and a custom three-dimensional printed eyecup attachment. The eyecup attachment is designed to position the camera at a suitable and reproducible distance from the eye to ensure that the system can focus appropriately on the lens details. The eyecup attachment also serves to block stray light and diffuse the ambient lighting. In addition, the eyecup attachment ensures that the camera is held in the correct orientation while photos are being captured. The capture images are analyzed using image processing software to determine the angel of rotation of the contact lens.

Claims3

Dependent claims

A method for evaluating toric contact lens rotational stability on-eye, the method comprising the steps of:

providing lens wearers with an electronic device including a camera having a macro lens and eyecup attachment and at least a first contact lens with visible fiducial markers;
instructing lens wearers to photograph each eye while wearing their contact lens at fixed time intervals over an extended time period using the electronic device;
and
analyzing photographs of the contact lens on-eye using image processing software to determine the angle of the first contact lens with visible fiducial markers relative to a reference line connecting the nasal and temporal canthi to calculate and characterize the distribution of contact lens rotation data over the extended time period.

1 more element

Dependencies are inferred from the claim text.

Method and means for evaluating toric contact lens rotational stability

Life of this patent

Method and means for evaluating toric contact lens rotational stability

Life of this patent

Abstract

Claims3