Page 118 - The Indian Optician Digital Edition May-Junel 2022
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6. For Sun and dust allergy. Sensitive eyes FIGURE 4 - AMETROPIA
are susceptible to foreign bodies like, dust, (ASTIGMATISM)
pollen, smog, etc. Factors causing dust allergy
include reduced tear film protection (in
conditions like dry eye, faulty lipid, aqueous or
mucin layers) as well as presence of allergens
in high concentration (in smog, sand storm
and motor vehicle pollutants, etc.). Glasses act
as a direct barrier and reduce the exposure to
allergens, sun, dust and other pollutants.
7. For other types of Visual Problems. Glasses
are also prescribed to alleviate visual
symptoms in conditions such as cataract,
glaucoma, low vision, macular degeneration, IF THE PATIENT FAILS TO WEAR
and so on. In such conditions, glasses provide GLASSES, THE PROBLEM MAY
magnified image and thus help patients with GET WORSE OR EVEN LEAD TO
low vision to see clearly.
PERMANENT HAMPERING OF
EYE EXAMINATION TO ASSESS THE FUNCTIONING OF THE EYE. IT
NEED FOR GLASSES MAY HAVE IMMEDIATE OR
LONG-TERM EFFECT ON THE
A complete ocular assessment should
always be done before prescribing glasses that FUNCTIONING OF THE EYE
without fail should include visual acuity testing,
retinoscopy, subjective refraction, slit lamp
examination, fundus examination, as well as EFFECT OF NOT WEARING GLASSES
keratometry, axial length measurement and
binocular function test if required. If the patient fails to wear glasses, the
problem may get worse or even lead to
EFFECT OF OPTICAL CORRECTION permanent hampering of functioning of the eye.
ON EYE It may have immediate or long-term effect on
the functioning of the eye.
It helps in focusing light on corresponding
location of eye, reduces glare and allows for Immediate effect includes blurring of vision,
undistorted clear image without stress. It reduced contrast sensitivity, distorted image,
minimises exposure to sun. glare, imbalance in two eyes and stress in the
ocular muscles and binocular anomalies. Due
to these problems the patient squeezes his/her
eye to avoid confusion and diplopia leading to
FIGURE 3 - AMETROPIA stress, rubbing of eye, itching, redness and other
(HYPERMETROPIA/ asthenopia symptoms. Whereas, the long-term
HYPEROPIA)
effect may lead to improper development of
visual function suppression, abnormal retinal
correspondence, amblyopia and inability to
see clearly which in turn may lead to reduced
physical activity, abnormal social behaviour, and
in extreme cases may lead to social isolation.
EXCEPTIONS
Some people have a misconception that
if they start wearing glasses, they become
114 THE INDIAN OPTICIAN MAY-JUNE 2022 OPTOMETRY
