![A convex lens in a human eye adjusts its focal length based on the object position. If it can form a clear image on retina for objects as close as 25 cm A convex lens in a human eye adjusts its focal length based on the object position. If it can form a clear image on retina for objects as close as 25 cm](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1661885/original_Picture11.png)
A convex lens in a human eye adjusts its focal length based on the object position. If it can form a clear image on retina for objects as close as 25 cm
![Figure(a) shows the basic structure of a human eye. Light refracts into the eye through the cornea and is then further redirected by a lens whose shape (and thus ability to focus Figure(a) shows the basic structure of a human eye. Light refracts into the eye through the cornea and is then further redirected by a lens whose shape (and thus ability to focus](https://d1hj4to4g9ba46.cloudfront.net/questions/1780567_e41b64923de94c67a79dbd4c353791db.jpg)
Figure(a) shows the basic structure of a human eye. Light refracts into the eye through the cornea and is then further redirected by a lens whose shape (and thus ability to focus
![Molecular Expressions Microscopy Primer: Physics of Light and Color - Human Vision and Color Perception Molecular Expressions Microscopy Primer: Physics of Light and Color - Human Vision and Color Perception](https://micro.magnet.fsu.edu/primer/lightandcolor/images/humanvisionfigure8.jpg)
Molecular Expressions Microscopy Primer: Physics of Light and Color - Human Vision and Color Perception
![How Focal Length Affects Viewing Angle | Digital Camera Know-Hows | Digital Camera | Digital AV | Support | Panasonic Global How Focal Length Affects Viewing Angle | Digital Camera Know-Hows | Digital Camera | Digital AV | Support | Panasonic Global](https://av.jpn.support.panasonic.com/support/global/cs/dsc/knowhow/common/img/l12/l12_01.jpg)