Night glare: what your visual acuity doesn’t tell you
Night glare: what your visual acuity doesn’t tell you A patient can have 10/10 vision and still be…
The visual field test: what is it for?
Key points The visual field test, or perimetry, maps everything you perceive around the point you are fixing…
Can you have several vision defects at once?
Key points Yes: having several vision defects at once is very common. You can be short-sighted and astigmatic,…
Being farsighted: how does a hyperope see?
Key points A farsighted person has an eye that is too short, or not convergent enough: the sharp…
Oculist or ophthalmologist: what’s the difference?
Oculist or Ophthalmologist: What’s the Difference? “Oculist” is simply the old name for the ophthalmologist: it refers to…
What determines eye colour?
Key points Eye colour depends on a single pigment, melanin, contained in the iris: there is neither a…
Having astigmatism: definition, symptoms and correction
Key points Having astigmatism means having an eye whose cornea, and sometimes the lens, is not perfectly spherical:…
Mydriasis and miosis: why a pupil dilates or constricts
Mydriasis and miosis: why a pupil dilates or constricts Mydriasis refers to an abnormally dilated pupil, miosis to…
Eye anatomy: understanding how your vision works
Key points The eye works like a sophisticated camera: an optical system at the front focuses the light,…
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