Feministinen aloite

The eye is a complex organ, composed of many different structures with varying sensitivity to the effects of radiation. An easy way to look at the eye is to divide it into zones that can be examined with respect to their susceptibility to radiation effects. It is also noteworthy that the effects of radiation on the eye not only depend on the sensitivity of the tissue itself but also on the mode of radiation delivery.
The tissues of the external eye include the conjunctival epithelium, glandular ducts, cornea and lacrimal drainage apparatus. In the first six months, which is the acute phase of radiation, effects include redness and swelling of the eyelid and conjunctiva with possible keratinization (process by which epithelium firms via deposits of keratin, a protein).
Radiation damage to the vessels can occlude or obliterate them, resulting in ischemia (decreased blood flow) to the posterior intraocular components. Retinal damage can result in vision loss, and visualization of neovascularization (formation of new blood vessels) and exudates can be seen.