Question
Which one of the following lenses should be used to
correct the defect of astigmatism?Solution
Astigmatism is an optical defect in which vision is blurred due to the inability of the optics of the eye to focus a point object into a sharp focused image on the retina. This may be due to an irregular or toric curvature of the cornea or lens. The two types of astigmatism are regular and irregular. Irregular astigmatism is often caused by a corneal scar or scattering in the crystalline lens, and cannot be corrected by standard spectacle lenses, but can be corrected by contact lenses.
If in a certain way ‘Red’ is related to ‘Banana’, Blue is related to ‘Grapes’ in the same way ‘Black’ is related to who among the follow...
Who among the following appeared for IBPS PO?
Which of the following combination is correct?
In which floor and flat does S live?
Who among the following person goes immediately before I?
On which of the following shelf number does Box G is kept from the top?
Which of the following combination is correct?
Who lives immediately above E in the same type of flat?
How many floors are there in between the floor of the one who likes Yellow and the one who lives at floor 8th?
Who among the following person lives South west of N and North west of Q?
