If you use a CPAP machine then you likely have experienced 'CPAP dry eye'.  The common symptomology is patients with scratchy, irritated eyes on waking if mask fit is not perfect or a nighttime shift occurs.

CPAP dry eye is not a real 'diagnosis'... but certainly is a common clinical observation.

Beyond ensuring that mask fit is optimal, for CPAP dry eye, I recommend that patients use either:
Ocunox night-time ointment with Vitamin A or I-Defence gel.

Beyond ensuring that mask fit is optimal, for CPAP dry eye, I recommend that patients use either:
Ocunox night-time ointment with Vitamin A or I-Defence gel

Dr Jason Morris

Both are used just before bed.  They prevent much of the overnight evaporation that causes the morning discomfort and redness.

Both gels (I-Defence less) cause some blurred vision so only evening use is recommended.

Learn more about these CPAP Dry Eye products...

What to use during the day?

Our most popular dry eye drops are based on Sodium Hyaluronate - These are our favorites at mEYEspa

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External References: 

Study shows high incidence of dry eye in patients with sleep apnea

Dr. Jason Morris
Tags: DryEye
Dr. Jason Morris
Owner mEYEspa
https://www.meyespa.com/pages/contact-us

Away from corporate influences and their churn, I believe in time and an unhurried environment. At mEYEspa and my clinic, we are UNcorporate Optometry. I have special interest in occupational vision needs, concussive injury to the visual system and dry eye management. I am the owner of mEYEspa and a dedicated to the delivery of relevant information and clinic-tested eye care products. -Doctor of Optometry - University of Waterloo 1994 -Honors Bachelor of Science – Waterloo 1994 -Registered Ontario College of Optometrists -Member of Ontario Association of Optometrists -Member of Canadian Association of Optometrists -10 year straight winner of 3 Best Rated Optometrists London ON