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Related Experiment Video

Updated: Jul 15, 2026

Determining the Toxicity of UV Radiation and Chemicals on Primary and Immortalized Human Corneal Epithelial Cells

Determining the Toxicity of UV Radiation and Chemicals on Primary and Immortalized Human Corneal Epithelial Cells

Published on: July 22, 2021

Ultraviolet light and pterygium.

Sandra Sekelj¹, Iva Dekaris, Edita Kondza-Krstonijević

¹University Department of Ophthalmology, General Hospital "Sveti Duh", Zagreb, Croatia. Sandra.Sekelj@bolnicasb.hr

Collegium Antropologicum

|May 2, 2007

Summary

Ultraviolet (UV) light exposure significantly increases the risk of primary pterygium and recurrence after surgery. Patients working outdoors had a 27% recurrence rate, compared to 10% for those with less sun exposure.

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Published on: February 15, 2020

Area of Science:

Ophthalmology
Environmental Health

Background:

Pterygium is a common eye condition.
Surgical removal with conjunctival autograft is a standard treatment.
The role of ultraviolet (UV) light in pterygium development and recurrence is not fully understood.

Purpose of the Study:

To investigate the causal role of UV light exposure in primary pterygium and its recurrence.
To compare recurrence rates in patients with different levels of sun exposure.

Main Methods:

A comparative study involving two groups of patients undergoing pterygium surgery.
Group 1: 38 eyes with primary/recurrent pterygium, high UV exposure (outdoor workers).
Group 2: 20 eyes with primary/recurrent pterygium, low UV exposure.
Follow-up period of 6-12 months post-surgery.

Main Results:

The recurrence rate of pterygium was 27% in the high UV exposure group.
The recurrence rate was 10% in the low UV exposure group.
This indicates a significantly higher recurrence rate associated with greater sun exposure.

Conclusions:

UV light is a significant contributing factor to both primary pterygium formation and post-surgical recurrence.
Minimizing UV exposure may be crucial in preventing pterygium and its recurrence.