CNS oxygen toxicity is the main form seen in diving. Pulmonary oxygen toxicity is not of concern except in very long technical dives (extended cave or rebreather dives, for example) lasting six to 12 hours or more.Prolonged dives within the safe limits for CNS oxygen toxicity may still cause ocular toxicity, which manifests as a narrowing of the visual field and myopia.ulmonary oxygen toxicity is not of concern except in very long technical dives (extended cave or rebreather dives, for example) lasting six to 12 hours or more. Prolonged dives within the safe limits for CNS oxygen toxicity may still cause ocular toxicity, which manifests as a narrowing of the visual field and myopia.
Back to top. 1  No. The Ergo is designed so that your baby is carried in a seated position which supports the spine by dispersing the weight of the head over the hips, thighs and spine. 2  Because of this healthy and Ergonomic design, it is not possible to wear your baby facing out.
The Good. 1  It has a body hugging crescent shape like most nursing pillows with an adjustable belt to hug the pillow to your body in the place and height that is most comfortable for you. 2  There is no gap between your body and baby when wearing the pillow strapped. The cover is made of soft minky fabric and is very comfortable against your babyâs skin. 2  The covers are removable and washable. 3  Very supportive and yet very flexible. 4  Large size and length is a good fit for large moms, c-section moms and extended breastfeeding of toddlers. 5  Has no zippers or Velcro to irritate baby.