Narrative:

I have recently been prescribed glasses to assist in near vision while performing flying duties. I have difficulty seeing checklists; approach plates; notes; and instruments without them. The md-11 preflight requires us to ensure that the smoke goggles are serviceable. During the last international pairing I preflighted my goggles several times; all with negative results. I was unable to successfully don the mask and goggles over my glasses.the aircraft is equipped with the eros MC10 oxygen masks and MXP210 goggles. I am not able to use the MXP210 goggles over my glasses; and concluded that in order to achieve an airtight fit in a smoke situation; I would have to leave off my glasses. Even without the glasses on; the MC10 mask and MXP210 goggles render an extremely limited field of view; without my prescribed glasses; the visibility in the cockpit becomes a real challenge; even without the smoke. The company which manufactures the eros mask and goggles does make a glasses-friendly goggle series; the mxg; which is compatible with the MC10 mask.in conclusion; I am concerned that the high proportion of wearers of glasses (almost 100% of captains; and 50% of first officers) are not in fact capable of wearing their prescribed corrective lenses in conjunction with the eros system provided in our md-11s. In the event of a smoke situation; our ability to function will be seriously compromised.

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Original NASA ASRS Text

Title: An MD-11 First Officer reported the MXP210 smoke goggles are unusable when worn over his eyeglasses because the glasses prevent the goggles from making an air tight seal.

Narrative: I have recently been prescribed glasses to assist in near vision while performing flying duties. I have difficulty seeing checklists; approach plates; notes; and instruments without them. The MD-11 preflight requires us to ensure that the smoke goggles are serviceable. During the last international pairing I preflighted my goggles several times; all with negative results. I was unable to successfully don the mask and goggles over my glasses.The aircraft is equipped with the EROS MC10 oxygen masks and MXP210 goggles. I am not able to use the MXP210 goggles over my glasses; and concluded that in order to achieve an airtight fit in a smoke situation; I would have to leave off my glasses. Even without the glasses on; the MC10 mask and MXP210 goggles render an extremely limited field of view; without my prescribed glasses; the visibility in the cockpit becomes a real challenge; even without the smoke. The company which manufactures the EROS mask and goggles does make a glasses-friendly goggle series; the MXG; which is compatible with the MC10 mask.In conclusion; I am concerned that the high proportion of wearers of glasses (Almost 100% of captains; and 50% of first officers) are not in fact capable of wearing their prescribed corrective lenses in conjunction with the EROS system provided in our MD-11s. In the event of a smoke situation; our ability to function will be seriously compromised.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.