The question of divers using vented ear plugs to ease
equalization and keep water out of their ears is often
raised on divers’ online message boards. These soft polymer
plugs form a tight seal and have a very small hole, or
vent, running through them to allow for equalization of
the ear. Many responders indicate that the plugs reduce
the frequency of external ear canal infections and ease
clearing of the ears.
Doc’s Proplugs (www.proplugs.com) is the primary
purveyor of vented ear plugs. It claims that when fitted
properly, the plugs reduce “ear squeeze caused by inability
to equalize between the outer and middle ear,” and
help “prevent outer ear and inner ear infection, vertigo
and thermal reaction. ” Its Web site includes a list of
undated and unverifiable testimonials.
Only minimal medical research has been conducted
on these ear plugs. A self-published, undated piece by
the Sardinian Institute of Underwater and Hyperbaric
Medicine evaluated two professional divers with histories
of perforated eardrums “who in the summer made
constantly 3 dives per day.” After observing one diver
for 17 months and the other for three months, no problems
with inflammation of the middle ear were noted.
Another study found that in patients involved in various
watersports, the use of earplugs substantially reduced
surfer’s ear/exostosis (benign bony growth in the external
ear canal caused by exposure to cold, wet and windy
conditions).
If a vented ear plug did lessen the flow of water into
the external auditory canal, the expectation is that outer
ear infections (swimmer’s ear) would be reduced. As for preventing inner ear infections, this isn’t believable.
Water does not enter the middle ear space from the
outer ear unless the eardrum is ruptured. And someone
with a perforated eardrum should not be diving anyway.
Decreased water flow also would be expected to reduce
temperature-related abnormalities, such as vertigo and
surfer’s ear.
The claim of easing equalization is difficult to support,
as there is no reasonable mechanism to explain
how this might occur. Doc’s Proplugs’ Web site states,
“Due to surface tension, the vented plug also reduces
abrupt pressure changes from reaching the sensitive
eardrum which contributes to easier equalization.” I find
this assertion neither comprehensible nor compelling.
I was unable to find any published reports of harm
to the ear from such plugs. Provided the vent in the
plug remains unobstructed, these devices appear to pose
little or no danger to the ear. However, if a vent should
become clogged, especially upon descent, equalization
could become impeded and the eardrum damaged.
Using such plugs to protect a ruptured eardrum may
give a diver a false sense of security. He runs the risk of
losing the device during a dive, allowing water to enter
the middle ear space and resulting in pain, disorienting
vertigo and possible infection.
The bottom line? If you’re experiencing external ear
infections or worried about surfer’s ear, vented plugs
may be worth the small investment. However, divers with
middle-ear congestion or infection are unlikely to benefit
from these plugs, and they should refrain from diving
until seen by an ear, nose and throat specialist. For those
with continuing difficulty in equalizing, experiment with
various clearing techniques before resorting to these
vented ear plugs stoppers.
— Doc Vikingo