Results: Thirty-eight subjects (20.4%) were outdoor workers and 148 (79.6%) were indoor workers. Outdoor workers were more likely to be male smokers and alcohol drinkers with lower family income and higher sunlight exposure than indoor workers. [link.springer.com]

Pterygium is common among outdoor workers who are daily exposed to sunlight and dust due to repeated conjunctival / corneal drying and micro-trauma Ophthalmology. 2013. [raysahelian.com]

pain that completely interferes with usual activity or sleep. [clinicaltrials.gov]

Corneal edema is a clinical sign of corneal disease. The condition is characterized by an increase in corneal thickness secondary to an abnormal accumulation of fluid. [decisionmakerplus.net]

Ophthalmic examination reveals a pigmented tumor with clear cysts and without any visible abnormal vessels (Figure 1). Figure 2. HEx250: conjunctival mucosa seat of a malignant tumor proliferation with diffuse pigmented atypical cells. [research-journal.net]

Neovascularization in Pterygia Completed NCT00768963 Phase 1 ranibizumab;ranibizumab 37 Assessment of Fibrin Glue in Pterygium Surgery and Other Forms of External Eye Surgery Completed NCT00344201 Phase 1 38 The Application of Fibrin Glue in Ocular Surface Diseases Withdrawn [malacards.org]