28 Questions
What is the purpose of scratching the box below in the instructions?
To reveal the access code for eBook activation
What is the consequence of transferring the eBook access to another party?
It violates the terms of the limited license agreement
Who is NOT listed as an editor or associate editor of STEINERT’S Cataract Surgery?
Mitchell P.
What is the first step to activate the eBook version of STEINERT’S Cataract Surgery?
Where can you find the PIN required for eBook activation?
Inside cover of the book
Who is the Vice Chair of Clinical Ophthalmology at the Gavin Herbert Eye Institute?
Weikert, MD
Where is the Cullen Eye Institute located?
Houston, Texas
Which edition of Steinert’s Cataract Surgery is the latest?
Fourth Edition
How many previous editions of the book were copyrighted before 2023?
3
Where was the book 'Steinert’s Cataract Surgery' printed?
India
Who is the Content Strategist for the publication?
Kayla Wolfe
What is the ISBN of 'Steinert’s Cataract Surgery, Fourth Edition'?
978-0-323-56811-1
According to the copyright notice, what must practitioners and researchers rely on?
Their own experience and knowledge
What is the initial action that induces the surface ectoderm to thicken and differentiate into a lens precursor?
Formation of optic vesicles
At what stage does the lens vesicle break off the stalk, connecting it to the surface ectoderm?
At week 4 of gestation
What does the outer basement membrane of the lens vesicle hypertrophies to become?
The elastic lens capsule
What do the posterior cells of the lens vesicle rapidly elongate to form by the end of week 4 of gestation?
The primary lens fibers
What happens as the lens pit continues to invaginate?
The surface ectoderm thickens
What are the optic vesicles?
Outpouchings of the diencephalon
What is the shape of the adult lens?
Biconvex
During what stage of gestation do the lens fibers form the fetal nucleus?
Week 6 to 7
What is the role of the retina in lens embryogenesis?
Providing inductive signals to regulate growth and the A-P axis of the lens
What structures form Y-shaped sutures unique to the fetal growth stage at around week 8?
Secondary lens fibers
To what structure does the hyaloid artery supply nutrients during fetal development?
Tunica vasculosa lentis
What causes the lens to become more spherical during accommodation?
Contraction of zonular fibers
What is the nutritive structure supplied by the hyaloid artery during fetal development?
Tunica vasculosa lentis
At what age does the lens change shape from a slightly rounded ovoid to a more flattened ovoid?
Advanced age
What is the approximate diameter of the adult lens?
4 to 5mm
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