A method for examining a pathology of an eye via a reversibly dyed hydrogel or silicon hydrogel substrate applied to the cornea thereof, the method comprising: immersing a hydrogel or silicon hydrogel substrate in a saline solution outside the eye, wherein the hydrogel or silicon hydrogel substrate has a non-dyed appearance, wherein the hydrogel or silicon hydrogel substrate is a soft contact lens; adding a dye to the saline solution to produce a combination solution; allowing the hydrogel or silicon hydrogel substrate to remain in the combination solution for an amount of time from 6 hours to 48 hours at a temperature from 15.556°C (60°F) to 27.778°C (82°F), wherein the dye does not print color into any part of the soft contact lens matrix; removing the hydrogel or silicon hydrogel substrate from the combination solution to produce a reversibly dyed hydrogel or silicon hydrogel substrate, wherein the reversibly dyed hydrogel or silicon hydrogel substrate returns to its non-dyed appearance over time and the dye is removable by soaking in a saline solution; stabilizing the combination solution with boric acid and a soluble sodium chloride adapted to maintain the combination solution at the temperature during the amount of time at a pH of 7.2 plus or minus 0.2 with an isotonic adjustment between 290 to 320 mOsm/kg; characterized by : placing the contact lens on an eye and illuminating the eye with ultraviolet radiation and removing the ultraviolet radiation and examining surrounding tissues of the eye fro a corneal abrasion or for a small particle in the eye via a luminescent radiation stored in the contact lens and any dye transferred from the contact lens to the eye. immersing a hydrogel or silicon hydrogel substrate in a saline solution outside the eye, wherein the hydrogel or silicon hydrogel substrate has a non-dyed appearance, wherein the hydrogel or silicon hydrogel substrate is a soft contact lens; adding a dye to the saline solution to produce a combination solution; allowing the hydrogel or silicon hydrogel substrate to remain in the combination solution for an amount of time from 6 hours to 48 hours at a temperature from 15.556°C (60°F) to 27.778°C (82°F), wherein the dye does not print color into any part of the soft contact lens matrix; removing the hydrogel or silicon hydrogel substrate from the combination solution to produce a reversibly dyed hydrogel or silicon hydrogel substrate, wherein the reversibly dyed hydrogel or silicon hydrogel substrate returns to its non-dyed appearance over time and the dye is removable by soaking in a saline solution; stabilizing the combination solution with boric acid and a soluble sodium chloride adapted to maintain the combination solution at the temperature during the amount of time at a pH of 7.2 plus or minus 0.2 with an isotonic adjustment between 290 to 320 mOsm/kg; characterized by : placing the contact lens on an eye and illuminating the eye with ultraviolet radiation and removing the ultraviolet radiation and examining surrounding tissues of the eye fro a corneal abrasion or for a small particle in the eye via a luminescent radiation stored in the contact lens and any dye transferred from the contact lens to the eye. <EOS>