A leaked Apple document has hinted that the firm may be secretly working on its own virtual reality glasses. A health and safety document has revealed how several employees suffered from eye pain after trying out a mystery 'new prototype'. The report added the eye complaints were 'thought to be associated with use', sparking speculation that Apple could be developing a line of iGlasses. The report, which lists all the injures incurred by Apple employees in February of this year, was mistakenly sent round to hundreds of workers. An Apple insider leaked the report and speculated that its contents hint at the secret development of VR glasses, according to Gizmodo. One incident involving a mystery gadget at Apple's De Anza office in Cupertino led to 'medical treatment beyond first aid'. The report said: 'After BT4 user study, user advised study lead, that she experienced discomfort in her eye and said she was able to see the laser flash at several points during the study. 'Study lead referred her to optometrist and secured prototype unit for analysis.' During another incident, an employee from Apple's Vallco Parkway office reported eye pain after trying a 'new prototype'. 'Employee reported eye pain after working with new prototype, thought it may be associated with use,' the report said. 'He noticed that the security seal on the magenta (outer) case had been broken and had thought the unit may have been tampered with.' These mysterious incidents have led many to speculate that Apple is testing a pair of augmented reality glasses. In January, rumours surfaced that eyeware company Carl Zeiss is working with Apple to create smart glasses. The wearable headset would connect wirelessly to iPhones and show information that is superimposed onto a user's view of the real world, according to the rumours. It was also suggested that the futuristic device will become available sometime this year. 'A Zeiss employee confirmed the rumors that Apple and Carl Zeiss AG are working on a light pair of augmented reality/mixed reality glasses that may be announced this year,' blogger Roberty Scoble wrote. 'I thought it was next year but now that I saw this I believe it will happen this year.' One of the first wearable glass headset, Google Glass, was discontinued earlier this year. The device received plenty of attention when it was launched in 2012, but quickly ran into problems with its awkward appearance and privacy concerns over video recording.
