Statistics for Vision

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Hint	Answer	% Correct
How many optical surfaces are there in the eye?	4	100%
What is the medical term for clouding of the lens?	Cataract	100%
What is the medical term for short sightedness?	Myopia	100%
A charecteristic of neurosyphilis is that a pupil may not react to light but will react to accomodation, what type of pupil is this known as?	Argyll-Robertson	0%
What colour wave length is the human eye least well suited for?	Blue	0%
What type of aberrations are caused due to different wave lengths refracting differently?	Chromatic	0%
Accomodation is the change in size of the lens to bring near or far objects into focus, would the lens be constricted or dilated to focus on a near object?	Constricted	0%
What is the name for the transparent protein that constitutes the cells of the lens?	Crystallin	0%
What is the unit of measurement for strength of a lens?	Dioptres	0%
What nucleus does the occulomotor nerve act through to control ciliary muscles?	Edinger-Westphal	0%
And the medical term for long sightedness?	Hypermetropia	0%
Due to diffraction a lens will cause the image of a point source to be a blurred circle, what is the name for this phenomena?	Pointspread function	0%
What canal in the eye is used alongside the trabecular meshwork to drain the aqueous humour?	Schlemm	0%
What type of aberrations occur due to the edge of a lense refracting light stronger than the centre?	Spherical	0%
What is the name given to the transparent collagen fibrils in the cornea?	Stroma	0%