Peripheral light focusing

Peripheral Light Focusing (PLF) can be described as the focusing of Solar Ultraviolet Radiation (SUVR) at the nasal limbus of the cornea. SUVR incident at the temporal limbus passes across the corneal dome and focuses at the nasal limbus. The limbal region is a stem cell rich tissue and as a result of the focusing of SUVR, it is thought that ocular conditions such as Pinguecula and Pterygium are a result of this increased exposure to SUVR.