Conjunctivochalasis is the precursor to pterygium

Area of Science:

• Ophthalmology
• Ocular Surface Disease
• Pathophysiology

Background:

• Pterygium is a fibrovascular growth on the ocular surface with an unknown cause, potentially linked to UV radiation and proteases.
• Conjunctivochalasis involves excessive conjunctiva, associated with matrix metalloproteinases and inflammatory cytokines, similar to pterygium.
• Both conditions affect vision and are treated with surgical excision.

Purpose of the Study:

• To propose a pathological mechanism for pterygium development from conjunctivochalasis.
• To suggest therapeutic strategies targeting conjunctivochalasis to prevent pterygium progression.
• To re-evaluate surgical approaches for pterygium resection based on the proposed mechanism.

Main Methods:

• This study is based on a hypothesis and proposes a pathological mechanism.
• It reviews existing knowledge on pterygium and conjunctivochalasis pathophysiology.
• The study uses deductive reasoning to explain clinical observations.

Main Results:

• Conjunctivochalasis, particularly in the nasal conjunctiva, may transform into pterygium under specific oxidative or inflammatory conditions.
• Protease activity likely degrades conjunctival and corneal epithelium, explaining pterygium adherence to the cornea.
• The hypothesis explains the histological structure of excised pterygium and surgical plane characteristics.

Conclusions:

• Protecting conjunctivochalasis through anti-inflammatory, anti-protease treatments, or UV avoidance may prevent pterygium formation.
• Surgical pterygium resection may not require extensive removal from the cornea, preserving healthy conjunctiva.