Related Experiment Videos
Pterygium. Clinical course and treatment
Revue Internationale Du Trachome Et De Pathologie Oculaire Tropicale Et Subtropicale Et De Sante Publique : Organe De La Ligue Contre Le Trachome Avec La Collaboration De L'International Organization Against Trachoma Et Des Organisation
|January 1, 1989
Summary
Pterygium, a growth caused by sun and microtrauma, has two phases. Prevention is key in endemic areas, while lamellar keratoplasty surgery is most effective for the corneal phase to prevent recurrence.
Area of Science:
- Ophthalmology
- Ocular Surface Disease
Background:
- Pterygium is a wing-shaped fibrovascular growth of the conjunctiva.
- It is associated with chronic ocular irritation from UV radiation and microtrauma.
- The condition progresses through conjunctival and corneal phases.
Purpose of the Study:
- To review current concepts on pterygium pathogenesis, clinical course, and treatment.
- To analyze the relationship between exposure to predisposing factors and pterygium presentation.
- To evaluate the efficacy of various medical, physical, and surgical interventions.
Main Methods:
- Review of existing literature on pterygium.
- Analysis of clinical data from 2,350 subjects in an endemic region (Central Sahara).
- Evaluation of preoperative/postoperative treatments including medical, physical (radiotherapy, cryotherapy, laser), and surgical techniques (excision, lamellar keratoplasty).
Main Results:
- Pterygium pathogenesis linked to solar radiation and microtrauma.
- Disease presentation correlates with exposure severity and duration.
- Medical/physical treatments show minimal efficacy as primary treatment but are valuable adjuncts.
- Lamellar keratoplasty and its variants are highly effective in preventing recurrence, especially in the corneal phase.
Conclusions:
- Prevention is the most effective treatment in highly endemic zones.
- Surgery is the only indicated treatment for the corneal phase of pterygium.
- Careful surgical indication and techniques like lamellar keratoplasty are crucial for minimizing recurrence.