| Opthamology Notes |
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Welcome to the science of
ophthalmology! It is a subject which undergraduates
find difficult to understand because of limited
exposure to this specialty and because of the fact
that the general principles of medicine, pathology
and pharmacology do not apply to ophthalmology. Here
I am attempting to make things a little easy by
posting some notes/articles on topics of general
interest to the undergraduates and fresh
postgraduates (especially from the point of view of
examinations). These articles have already been read
and found useful by many students at various medical
colleges of India and Nepal. I hope you will benefit
too. |
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I also intend to develop this section into a
complete online textbook of ophthalmology. Your
suggestions, feedback and criticism can really help,
don't hesitate in sending an e-mail or writing a
comment in the guestbook.
Lens &
Cataract a must read for everyone.
Dark Room
Procedures: Enlightened
Glare
Trachom |
| Did you know? |
- Vision of
Newborn is very poor about 3/60 and it gradually
increases to normal level of 6/6 by the age of 2
years.
- Pregnancy
can be diagnosed by measuring intraocular
pressure! Yes, by looking at the specific wave
pattern of electrotonography one could diagnose
pregnancy with reasonable certainity!!
- Unfair Deal
for Left Eye: Duane's Retraction syndrome and
Orbital Varices occur more commonly in left than
in right eye. Why? Let me also know if you find
the answer. Probably some relation with
difference in the anatomy of the right and left
sigmoid sinus...
- Love Sign:
Pupils dilate when one is feeling intensely
emotional due to sympathetic overtone
(.....unsympathetic undertones!!). So, keep
gazing into the eyes of your beloved!
- Eyes could
Kill: Oculocardiac reflex stimulated by noxious
stimulus to the eyes (pressure or pull on the
muscles) can lead to bradycardia or even cardiac
arrest due to vagal tone.
- Blind Spot
is not visible to us as a black patch in the
field of vision because it has no representation
in the brain (occipital cortex).
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Author: Dr. Sanjay Dhawan
Last Updated on: 1 March, 2014 |
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