A lens-sensor array for imaging parts of an eye, comprising: a lens array disposed onto a sensor array; the lens array configured to transmit a light from a lens towards the sensor array, the lens array comprising: a first section configured to direct the light reflected by a first part of the eye to the sensor array, the first section comprising a plurality of first sub-sections, each first sub-section comprising at least one first lenslet, wherein the first part of the eye is a cornea of the eye; and a second section configured to direct the light reflected by a second part of the eye to the sensor array, the second section comprising a plurality of second sub-sections, each second sub-section comprising at least one second lenslet, wherein the second part of the eye is a retina of the eye; wherein the first and second sub-sections form a concentric annular pattern including a first sub-section is shaped like a first annular ring and a second sub-section is shaped like a second annular ring concentric with the first annular ring; the sensor array comprising a plurality of sensors configured to: detect the light from the lens array; and generate a plurality of sensor signals corresponding to the light reflected by the cornea of the eye and the light reflected by the retina of the eye. a lens array disposed onto a sensor array; the lens array configured to transmit a light from a lens towards the sensor array, the lens array comprising: a first section configured to direct the light reflected by a first part of the eye to the sensor array, the first section comprising a plurality of first sub-sections, each first sub-section comprising at least one first lenslet, wherein the first part of the eye is a cornea of the eye; and a second section configured to direct the light reflected by a second part of the eye to the sensor array, the second section comprising a plurality of second sub-sections, each second sub-section comprising at least one second lenslet, wherein the second part of the eye is a retina of the eye; a first section configured to direct the light reflected by a first part of the eye to the sensor array, the first section comprising a plurality of first sub-sections, each first sub-section comprising at least one first lenslet, wherein the first part of the eye is a cornea of the eye; and a second section configured to direct the light reflected by a second part of the eye to the sensor array, the second section comprising a plurality of second sub-sections, each second sub-section comprising at least one second lenslet, wherein the second part of the eye is a retina of the eye; wherein the first and second sub-sections form a concentric annular pattern including a first sub-section is shaped like a first annular ring and a second sub-section is shaped like a second annular ring concentric with the first annular ring; the sensor array comprising a plurality of sensors configured to: detect the light from the lens array; and generate a plurality of sensor signals corresponding to the light reflected by the cornea of the eye and the light reflected by the retina of the eye. detect the light from the lens array; and generate a plurality of sensor signals corresponding to the light reflected by the cornea of the eye and the light reflected by the retina of the eye.