CBSE Class 10 Answered
What is Presbyopia? How can it be corrected?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
Presbyopia is an eye defect of old age. Elasticity of ciliary muscles becomes weak and it is not able to change shape and the focal length of eye lens effectively to see near and far away objects.
To correct Presbyopia, bi-focal lenses are used in spectacles. Bi-focal lenses have both converging as well as diverging lens.
Answered by | 04 Jun, 2014, 03:23: PM
Application Videos
-
Correction of Hypermetropia
This video explains the calculation of power of convex lens for correction ... -
Correction of Myopia
This video explains the concept of power of accommodation and calculation o... -
Defects of vision and its causes
This video describes the causes, types of lens to be used for the correctio... -
Defects of Vision and its Correction
This video explains how to identify the defect of vision and also explai...
-
Myopia - Causes and Corrective Lens
This video explains how to solve numericals based on the concept of defe...
CBSE 10 - Physics
Asked by udaykuna006 | 16 Jul, 2023, 07:20: PM
ANSWERED BY EXPERTCBSE 10 - Physics
Asked by bhu.joshi54 | 08 Aug, 2022, 07:36: PM
ANSWERED BY EXPERTCBSE 10 - Physics
Asked by sunnysuketu | 26 May, 2022, 08:33: PM
ANSWERED BY EXPERTCBSE 10 - Physics
Asked by sunnysuketu | 26 May, 2022, 08:33: PM
ANSWERED BY EXPERTCBSE 10 - Physics
Asked by nazirwagay1 | 17 Apr, 2020, 08:17: PM
ANSWERED BY EXPERTCBSE 10 - Physics
Asked by savitaagarwal668 | 04 Mar, 2020, 11:28: PM
ANSWERED BY EXPERTCBSE 10 - Physics
Asked by bhardwajshan2 | 07 May, 2019, 10:16: AM
ANSWERED BY EXPERTCBSE 10 - Physics
Asked by bindulekshmi65 | 31 Jan, 2019, 07:13: AM
ANSWERED BY EXPERTCBSE 10 - Physics
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT
