Pre-Pupillary Film

The prepupillary membrane, or prepupillary layer, or simply the prepupillary (lat. lamina praepupillaris), is a thin transparent plate located between the pupil and the iris, located on the inner surface of the anterior chamber of the eye. Unlike the pigment shell, it does not contain melanin and therefore has no color. This is an avascular formation, it does not have nerve endings, and it does not participate in metabolism.

The prepupillary film is one of the components of the eye structure that performs an important function for vision. It is located between the pupil (the hole in the iris) and the cornea, and serves to protect the eye from external influences.

The film consists of several layers of collagen and elastin, which provide its strength and elasticity. It also contains hyaluronic acid, which helps retain moisture and keep the film clear.

One of the functions of pre-pupillary film is to protect the eye from ultraviolet rays, which can damage the retina and lens. In addition, the film participates in image formation by transmitting light through the pupil and focusing it on the retina.

However, if the film is damaged or missing, it can lead to various eye diseases such as cataracts, glaucoma, retinal detachment and others. Therefore, it is important to monitor the condition of the pre-pupillary film and undergo regular examinations by an ophthalmologist.