The purpose of study was to analyze various ocular hazards which the welders come across in their working environments, their etiology and awareness of the welders about the safety measures and ocular hazards. A combined study on "Ocular Hazards Among Welders" was carried out simultaneously at Roza Eye Clinic Federal B Area and Al-Khidmet Hospital Orangi Town Karachi from June -December 2004. All the patients were welders collected randomly from the out patient departments when they attended the OPD for the complications they had suffered during their work. The level of knowledge about safety measures and ocular hazards was accessed. All the patients were examined thoroughly on slit lamp and detailed examination of anterior segment was done with special reference to conjunctiva, cornea and lens. X-ray orbits and B scans were done where there was a doubt of any intra ocular foreign body. All the information gained from the examination and investigations was noted down on the performs. 70 patients were studied over period of 6 months. The most common ocular hazard found were metallic foreign bodies 58.57% which lead to corneal ulcers with or without hypopyon and corneal opacities as a result of unhygienic self removal trials by the workers themselves or their colleagues. These were followed by conjunctivitis due to smoke, irritant gases and fumes 18.57%, photo- keratoconjunctivitis 17.14%, hyphaema 2.85%, endophthalmitis 2.85%, lenticular changes 8.57% and old corneal opacities 37.5 1%. Most of the workers belonged to 20-30 years of age group. Although 72.85% welders were aware of the importance of the use of safety measures but only 35.7% were aware of the ocular hazards they could come across. It was concluded that all these ocular hazards faced by the welders were almost preventable if the safety measures were used properly and regularly. Beginners in this profession should receive some basic training about the use of safety measures and first aid in case of emergency. The trends of self medication and treatment by quacks should be discouraged. The workers should seek immediate medical treatment as soon as possible to avoid miserable outcomes.