Visual Acuity Standard for Divers

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Authors
  1. Williams, S.
  2. Casson, E.
  3. Brooks, J.
  4. Greenley, M.
  5. Nadeau, J.
Corporate Authors
Defence R&D Canada - Toronto, Toronto ONT (CAN);Greenley and Associate Inc, Ottawa Ont (CAN)
Abstract
This report documents an experimental analysis conducted to assess the current Canadian Forces diving visual acuity entrance standards. Two experiments were conducted at Fleet Diving Unit Atlantic (FDU(A)), one subsurface experiment and one surface experiment. Nine participants took part in the experiments; the participants were qualified divers from the Canadian military (either Army Combat divers, Navy Clearance divers, or Reserve Port Inspection divers). Based on the results of the analysis and experiments, diving visual acuity recommendations were made depending upon whether or not vision can be corrected. If divers are not permitted subsurface vision correction (through the use of contact lenses), the following recommendations apply: Navy Divers: the standard should reflect a minimum requirement of 6/12 binocular uncorrected acuity for subsurface tasks, correctable to 6/6 binocular best corrected acuity for surface tasks conducted ashore or aboard a diving tender. Army Divers: the standard should reflect a minimum requirement of 6/6 binocular uncorrected acuity, unless spectacles can be carried on all dives to allow immediate correction to 6/6 for surface tasks conducted throughout the mission. If spectacles can be carried while diving, the minimum requirement would be 6/12 binocular uncorrected acuity for subsurface tasks, correctable to 6/6 binocular best corrected acuity for tasks conducted directly after surfacing. If divers are permitted to wear contact lenses while
Date of publication
01 May 2003
Number of Pages
143
DSTKIM No
CA035540
CANDIS No
535240
Format(s):
Electronic Document(PDF)

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