visisipy.models.materials#

Optical properties of materials used in eye models.

Classes#

`MaterialModel`	Optical properties of a material.
`EyeMaterials`	Material parameters of the elements of an eye.
`NavarroMaterials`	Material parameters of an eye, according to the Navarro model [1].
`NavarroMaterials458`	Material parameters of an eye for a wavelength of 458 nm, according to the Navarro model [1].
`NavarroMaterials543`	Material parameters of an eye for a wavelength of 543 nm, according to the Navarro model [1].
`NavarroMaterials589`	Material parameters of an eye for a wavelength of 589.3 nm, according to the Navarro model [1].
`NavarroMaterials633`	Material parameters of an eye for a wavelength of 632.8 nm, according to the Navarro model [1].
`BennettRabbettsMaterials`	Material parameters of an eye, according to the Bennett-Rabbetts model [1].
`GullstrandLeGrandUnaccommodatedMaterials`	Material parameters of an unaccommodated eye, according to the Gullstrand-LeGrand model [1].
`GullstrandLeGrandAccommodatedMaterials`	Material parameters of an accommodated eye, according to the Gullstrand-LeGrand model [1].

Module Contents#

class visisipy.models.materials.MaterialModel#

Optical properties of a material.

Attributes:

refractive_indexfloat: The refractive index of the material.
abbe_numberfloat: The Abbe number (or V number) of the material, which is a measure of the material’s dispersion (variation of refractive index with wavelength).
partial_dispersionfloat: The partial dispersion of the material, which is the difference in the refractive index of the material at two specific wavelengths.

to_dict() → dict[str, float]#

Convert the material model to a dictionary.

Returns:

dict[str, float]: A dictionary representation of the material model.

classmethod from_dict(data: dict[str, float]) → MaterialModel#

Create a material model from a dictionary.

Parameters:

datadict[str, float]: A dictionary with the material model parameters.

Returns:

MaterialModel: A material model instance.

class visisipy.models.materials.EyeMaterials#

Material parameters of the elements of an eye.

Attributes:

corneaMaterialModel: Refractive model of the cornea.
aqueousMaterialModel: Refractive model of the aqueous humour.
lensMaterialModel: Refractive model of the crystalline lens.
vitreousMaterialModel: Refractive model of the vitreous humour.

to_dict() → dict[str, Any]#

Convert the eye materials to a dictionary.

Returns:

dict[str, Any]: A dictionary representation of the eye materials, including a "type" key with the class name.

classmethod from_dict(data: dict[str, Any]) → EyeMaterials#

Create eye materials from a dictionary.

Parameters:

datadict[str, Any]: A dictionary with the eye materials parameters. Must contain a "type" key with the class name.

Returns:

EyeMaterials: An eye materials instance of the class specified by data["type"].

Raises:

ValueError: If the "type" value in data does not correspond to a known materials class.

class visisipy.models.materials.NavarroMaterials#

Bases: EyeMaterials

Material parameters of an eye, according to the Navarro model [1].

The Navarro model defines refractive indices at various wavelengths. These data were used to fit the material models in OpticStudio.

Attributes:

corneaMaterialModel: Refractive model of the cornea.
aqueousMaterialModel: Refractive model of the aqueous humour.
lensMaterialModel: Refractive model of the crystalline lens.
vitreousMaterialModel: Refractive model of the vitreous humour.

References

[1] (1,2)

Escudero-Sanz, I., & Navarro, R. (1999). Off-axis aberrations of a wide-angle schematic eye model. JOSA A, 16(8), 1881-1891. https://doi.org/10.1364/JOSAA.16.001881

class visisipy.models.materials.NavarroMaterials458#

Bases: EyeMaterials

Material parameters of an eye for a wavelength of 458 nm, according to the Navarro model [1].

Attributes:

corneaMaterialModel: Refractive model of the cornea.
aqueousMaterialModel: Refractive model of the aqueous humour.
lensMaterialModel: Refractive model of the crystalline lens.
vitreousMaterialModel: Refractive model of the vitreous humour.

References

[1] (1,2)

Escudero-Sanz, I., & Navarro, R. (1999). Off-axis aberrations of a wide-angle schematic eye model. JOSA A, 16(8), 1881-1891. https://doi.org/10.1364/JOSAA.16.001881

class visisipy.models.materials.NavarroMaterials543#

Bases: EyeMaterials

Material parameters of an eye for a wavelength of 543 nm, according to the Navarro model [1].

Attributes:

corneaMaterialModel: Refractive model of the cornea.
aqueousMaterialModel: Refractive model of the aqueous humour.
lensMaterialModel: Refractive model of the crystalline lens.
vitreousMaterialModel: Refractive model of the vitreous humour.

References

[1] (1,2)

Escudero-Sanz, I., & Navarro, R. (1999). Off-axis aberrations of a wide-angle schematic eye model. JOSA A, 16(8), 1881-1891. https://doi.org/10.1364/JOSAA.16.001881

class visisipy.models.materials.NavarroMaterials589#

Bases: EyeMaterials

Material parameters of an eye for a wavelength of 589.3 nm, according to the Navarro model [1].

Attributes:

corneaMaterialModel: Refractive model of the cornea.
aqueousMaterialModel: Refractive model of the aqueous humour.
lensMaterialModel: Refractive model of the crystalline lens.
vitreousMaterialModel: Refractive model of the vitreous humour.

References

[1] (1,2)

Escudero-Sanz, I., & Navarro, R. (1999). Off-axis aberrations of a wide-angle schematic eye model. JOSA A, 16(8), 1881-1891. https://doi.org/10.1364/JOSAA.16.001881

class visisipy.models.materials.NavarroMaterials633#

Bases: EyeMaterials

Material parameters of an eye for a wavelength of 632.8 nm, according to the Navarro model [1].

Attributes:

corneaMaterialModel: Refractive model of the cornea.
aqueousMaterialModel: Refractive model of the aqueous humour.
lensMaterialModel: Refractive model of the crystalline lens.
vitreousMaterialModel: Refractive model of the vitreous humour.

References

[1] (1,2)

Escudero-Sanz, I., & Navarro, R. (1999). Off-axis aberrations of a wide-angle schematic eye model. JOSA A, 16(8), 1881-1891. https://doi.org/10.1364/JOSAA.16.001881

class visisipy.models.materials.BennettRabbettsMaterials#

Bases: EyeMaterials

Material parameters of an eye, according to the Bennett-Rabbetts model [1].

Attributes:

corneaMaterialModel: Refractive model of the cornea.
aqueousMaterialModel: Refractive model of the aqueous humour.
lensMaterialModel: Refractive model of the crystalline lens.
vitreousMaterialModel: Refractive model of the vitreous humour.

References

[1] (1,2)

Bennett, A. G., & Rabbetts, R. B. (1990). Clinical visual optics (2nd ed.). Butterworth-Heinemann.

class visisipy.models.materials.GullstrandLeGrandUnaccommodatedMaterials#

Bases: EyeMaterials

Material parameters of an unaccommodated eye, according to the Gullstrand-LeGrand model [1].