The epidemiological statistics of blepharitis and dry eyes.
The international epidemiological statistics are not at all encouraging. The vulnerability
of the eyes is evident and the need for the adoption of new health measures regarding eyelid & eyelashes hygiene seems imperative, as it is a practice that has the potential to lead
to the improvement of the quality of vision and the quality of life of a large part of the population.
Blepharitis is defined as the common inflammation of the eyelids and eyelashes that is often accompanied by dry eyes and is seen in 37-47% of people visiting the ophthalmologist or the optometrist in the USA.
Dry eye occurs when the eyes for some reason (e.g. eyelid inflammation) do not produce enough or good quality tears that have the ability to stay the required amount of time on the ocular surface, for a stable and healthy tear film to exist. This can make your eyes feel uncomfortable, having a negative impact in your appearance and the quality of vision.
Up to 50% of the population suffers from some form of dry eyes, while 50% of dry eye patients also suffer from anterior blepharitis.
Blepharitis in many cases happens because of poor to non-existent eyelid/eyelashes hygiene and the chronic growth of bacteria and Demodex mites on the skin of the eyelids, resulting in chronic inflammation and ocular symptoms associated with: blepharitis, dry eyes, meibomianitis, chalazions, eyelid-conjunctivitis, trichiasis and madarosis. (ocular surface diseases)
Based on international clinical studies, it is apparent that the prevalence of Demodex mites plays an important pathological role together with bacteria:
65% of blepharitis is due to Demodex mites
84% over the age of 60 suffer from Demodex mites
90% of contact lens wearers has Demodex
91% of chalazions is attributed to Demodex mites
100% over the age of 70 suffer from Demodex
At the same time, it is clear that the ocular surface diseases mentioned above are related to
chronic dermatological diseases such as atopic dermatitis, seborrheic dermatitis, rosacea
and psoriasis:
40% of seborrheic dermatitis patients suffer from dry eyes
46% of blepharitis patients suffer from seborrheic dermatitis
51.4% of Rosacea patients suffer from ocular symptoms such as red eyes, itching, dry eyes, stye or chalazion
67% of psoriasis patients have ocular symptoms of blepharitis and dry eyes due to the chronic systemic inflammation of the disease
75% of rosacea patients have ocular involvement which is often under-diagnosed by dermatologists
84.2% of blepharitis patients have simultaneously at least one facial dermatosis such as facial demodicosis, seborrheic dermatitis, rosacea, eyelid dermatitis, ocular rosacea
What does eyelid and eyelashes hygiene include?
Which is the ideal blepharitis and dry eyes treatment?
The epidemiological statistics of Demodex and contact lens use.
It is well known that contact lenses and eye makeup burden eyelid &s eyelashes health especially in the absence of the necessary daily eyelid hygiene. Eye irritations and discomfort are not at all rare in this group of people.
The reason is that often in contact lens wearers there is an increased growth of Demodex parasites colonies on the eyelids and eyelashes according to clinical studies. Because of the effect of Demodex on normal eye flora or lid health, contact lenses may provide a more favorable environment for the multiplication of Demodex parasites..
It has been found that blepharitis can lead to increased deposits on contact lenses and consequently increased discomfort. At the same time, it has been found that contacts can provide a favorable environment for Demodex infestation which is associated with colonization of the eyelid margin by microorganisms such as Staphylococcus epidermidis, Propionibacterium acnes, Corynebacteria and Staphylococcus aureus. The same microorganisms have been found more commonly to grow easily in contact lens wearers. It is possible that contact lenses may provide a more favorable environment for bacterial growth and act as a carrier for microorganisms, which may lead to further Demodex infestation.
International scientific studies demonstrate that:
90% of contact lens wearers have Demodex
50% of contact lens wearers develop dry eye symptoms
27.4% of contact lens users stop using their contacts usually due to intolerance symptoms from the very first year
Due to the high epidemiological statistics of blepharitis and dry eyes in both the general population and contact lens wearers, the need for daily eyelid/eyelashes hygiene is more imperative than ever to achieve a better quality of vision-comfort-appearance-quality of life and combat Contact Lens Drop Out.
What can be the cause of meibomian gland dysfunction?
The meibomian or lipid glands of the eyelids can get blocked and dysfunctional because of
the inflammation of the eyelids that can be attributed to:
Chronic undiagnosed eyelid inflammation
Insufficient eyelid & eyelashes hygiene
Overgrowth of Demodex parasites and bacteria on the eyelids and eyelashes
Bacterial biofilm
Make up use (mascara, eye liner, eye shadows)
Contact lens use
Antiglaucoma eye drops