Patent ID: 11885706
Assignee: JOHNSON & JOHNSON VISION CARE, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 13:
14. The method according to claim 1, wherein the contact lens is a photochromic contact lens and the method comprises:
selecting a desired wavelength range of electromagnetic radiation;
selecting a desired level of activation of the photochromic contact lens; and
exposing the photochromic contact lens to actinic radiation until the photochromic contact lens reaches the desired level of activation, wherein the ocular surface comprises an eye, wherein the at least one region is located on a sclera of the eye, wherein the intensity measuring device is an imaging device configured to record electromagnetic radiation intensity data over the desired wavelength range, wherein measuring the first intensity of radiation reflected by the ocular surface with the intensity measuring device comprises taking a first image of the region of the sclera with the imaging device, wherein positioning the photochromic contact lens covering the ocular surface comprises covering the region of the sclera with the activated photochromic contact lens, wherein measuring the second intensity of radiation reflected by the region of the ocular surface that is covered by the photochromic contact lens with the intensity measuring device comprises maximizing visibility of the region of the sclera, and taking a second image of the region of the sclera with the imaging device, and
wherein calculating the transmittance of electromagnetic radiation through the photochromic contact lens using the measurements of the first intensity and the second intensity comprises:
recording a first set of electromagnetic radiation intensity data for the desired wavelength range taken from the first image;
recording a second set of electromagnetic radiation intensity data for the desired wavelength range taken from the second image;
entering the first and second sets of data into a database; and
using a processor to determine the transmittance of electromagnetic radiation through the photochromic contact lens.