There have been dozens of eye models published over more than 150 years, here presents several models of the human eye in using only glass catalog data. The models are based on particular wavelength ranges and weightings, field angles and field angle weightings and pupil sizes and you should feel free to modify them if it is more appropriate for a particular purpose.
Simplifying the eye
Sequential models
There are two common uses of Sequential eye models – one where the fundus of the eye is being viewed by an external optical system such as an ophthalmoscope or a fundus camera so the retina is the object surface, and the other where the eye is looking out through an optical system such as a spectacle lens or a visual instrument and so the retina is the image surface.
Shown here is the Eye_Retinal Object model:
Also included is a model of an eye accommodated to 250mm (four diopters of accommodation referred to the cornea), which is sometimes useful.
Non-Sequential models
Many ophthalmic instruments direct light into the eye and it is useful to be able to model the efficiency of the lighting delivery system, the uniformity of light distribution on the retina and so on.
This model uses F, d, and C equally weighted wavelengths and a 6mm diameter stop to represent a moderately dilated pupil. The default retinal detector subtends about 50 degrees edge to edge at the pupil for wide field illumination of the fundus.
There are many uses for optical models of the eye, and no single model is best for every application. Often a very simple model will quickly give the answer needed, and a complex model often gives no more valid results than a simple one.
Reference Source: https://www.zemax.com/
