When a person is suffering from both myopia and hypermetropia, then what type of correction lenses are required?
Asked by Topperlearning User | 4th Jun, 2014, 01:23: PM
A bi-focal lens is required for this defect. It is also known as Presbyopia. This defect is common in old age.
Answered by | 4th Jun, 2014, 03:23: PM
- what's myopia
- why normal can see only 25cm
- Where is the structure for bifocal lens
- Gently handle the spectacles of your grandparents and check the type of curvature in the lenses and record the observations about the vision through these lenses
- A person is unable to see distinctly the objects placed beyond 6m.Name the defect of vision he is suffering from?
- What is Presbyopia? How can it be corrected?
- State two main causes of person developing near sightedness. How can this defect be corrected?
- Give three differences between myopia and hypermetropia.
- The far point of a myopic person is 150 cm in front of the eye. Calculate the focal length and the power of lens required to enable him to see the distant objects clearly.
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