Ophthalmic shield and therapeutic method
A method is disclosed, comprising obtaining at least one metric of an eye; and determining, based on the at least one metric of the eye, at least one parameter for manufacturing an ophthalmic shield to be worn on the eye. In some embodiments, the ophthalmic shield may have a minimum horizontal dimension of 18 mm and a minimum vertical dimension of 15 mm. In some embodiments, the ophthalmic shield may have a minimum horizontal dimension of 20 mm and a minimum vertical dimension of 17 mm. In some embodiments, the ophthalmic shield may have a minimum horizontal dimension of 26 mm and a minimum vertical dimension of 22 mm.
1 . A method comprising:
obtaining at least one metric of an eye of a patient; and
determining, based on the at least one metric of the eye of the patient, at least one parameter for manufacturing an ophthalmic shield to be worn on the eye of the patient, wherein the ophthalmic shield has a minimum horizontal dimension of 18 mm and a minimum vertical dimension of 15 mm;
wherein obtaining at least one metric comprises obtaining upper and lower lid positions relative to a superior and inferior limbus of the eye of the patient; and
determining at least one parameter comprises determining, based on the obtained upper and lower lid positions, one or more parameters of one or more lid speculum features for an anterior aspect of the ophthalmic shield.
2 . The method of claim 1 , wherein:
obtaining at least one metric comprises obtaining a radius of curvature of a cornea of a patient; and
determining at least one parameter comprises selecting a base curve radius of a central zone of an ophthalmic shield to be manufactured based on the radius of curvature of the cornea of the patient.
3 . The method of claim 1 , wherein:
obtaining at least one metric comprises conducting objective and/or subjective refraction of the eye of the patient; and
determining at least one parameter comprises determining a refractive power of an optic zone of the ophthalmic shield.
4 . The method of claim 1 , wherein:
obtaining at least one metric comprises obtaining at least one measurement of a sagittal depth of the eye of the patient at a chord outside the cornea; and
determining at least one parameter comprises determining a sagittal depth parameter of the ophthalmic shield over the sclera of the eye of the patient.
5 . The method of claim 1 , wherein:
obtaining at least one metric comprises obtaining upper and lower lid fornix depths of the eye of the patient; and
determining at least one parameter comprises determining a vertical dimension of the ophthalmic shield based on the obtained upper and lower lid fornix depths.
6 . The method of claim 1 , wherein:
obtaining at least one metric comprises obtaining:
a horizontal distance between an inner canthus and an outer canthus of the eye of the patient, or
a horizontal distance between landmarks placed at the inner canthus and the outer canthus; and
determining at least one parameter comprises determining a horizontal dimension of the ophthalmic shield based on the obtained horizontal distance.
7 . The method of claim 1 , wherein:
obtaining at least one metric comprises obtaining a first distance from a nasal canthus to a nasal aspect of the cornea of the eye of the patient and obtaining a second distance from a temporal canthus to a temporal aspect of the cornea of the eye of the patient; and
determining at least one parameter comprises determining an asymmetry of horizontal dimensions of the ophthalmic shield from a geometric center of the ophthalmic shield based on the obtained first and second distances.
8 . The method of claim 1 , wherein:
obtaining at least one metric comprises obtaining one or more parameters including a residual refraction or wavefront refraction and registration of an optic zone of the ophthalmic shield with a predicate lens or shield placed on the eye of the patient; and
determining at least one parameter comprises determining a low and higher order aberration correction of the optic zone of the ophthalmic shield based on the one or more obtained parameters.
9 . The method of claim 1 , further comprising:
manufacturing the ophthalmic shield according to the determined at least one parameter.
10 . The method of claim 1 , wherein obtaining at least one metric of an eye of a patient comprises:
capturing, with a sensor, data describing the eye of the patient.
11 . The method of claim 1 , wherein obtaining at least one metric of an eye of a patient comprises:
obtaining a physical impression of the eye of the patient.