Explain presbyopia and astigmatism
Explain presbyopia and astigmatism?
Expert
Presbyopia refers to the visual impairment where there occurs loss of cililary muscle strength hence, decreasing the capability of crystalline lens in order to adjust the images of nearby objects onto the retina. In presbyopia, the near point of the vision becomes more distant. The disease normally takes place in the old people. Astigmatism is caused due to irregular shape of refractive structures, specially the cornea. In astigmatism, a single object-point can generate more than one image onto the retina and therefore the vision becomes distorted.
Describe the process how respiratory pigments act?
Are there any non-parasitic viruses?
Does DNA replication take place in cell division? Answer: Yes. DNA replication takes place in mitosis and also in meiosis.
Describe the characterization of symmetry and nervous system in echinoderms?
Define immuno diffusion reactions in brief?
Pharmacokinetics is the study of drug delivery through absorption/dispersion into the body, distribution around the body and elimination or excretion out of the body. Drug delivery into a body depends on numerous factors. These include:
How the circulatory system of reptiles is characterized? What is the fundamental difference between the amphibian and reptile heart?
Difference between marketing and sales: Sales are recognized as the requirement of seller and marketing is representing a requirement of buyer. Marketing is include with media planning, advertising, focus on man ma
Do protozoans contain a cellular nucleus?
What is natural active immunity and provide an example to support the definition?
18,76,764
1942503 Asked
3,689
Active Tutors
1461074
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!