Question

What is the cause of presbyopia? Which lens is used to correct it​

Answer 1

• ᴀɴ ᴇʏᴇ ᴛʜᴀᴛ sᴜғғᴇʀs ғʀᴏᴍ ᴍʏᴏᴘɪᴀ ᴀs ᴡᴇʟʟ ᴀs ғʀᴏᴍ ʜʏᴘᴇʀᴍᴇᴛʀᴏᴘɪᴀ ɪs sᴀɪᴅ ᴛᴏ sᴜғғᴇʀ ғʀᴏᴍ ᴘʀᴇsʙʏᴏᴘɪᴀ. ᴀ ᴘᴇʀsᴏɴ ᴡɪᴛʜ ᴛʜɪs ᴅᴇғᴇᴄᴛ ᴄᴀɴɴᴏᴛ sᴇᴇ ᴏʙᴊᴇᴄᴛs ᴅɪsᴛɪɴᴄᴛʟʏ ᴘʟᴀᴄᴇᴅ ᴀᴛ ᴀɴʏ ᴅɪsᴛᴀɴᴄᴇ ғʀᴏᴍ ʜɪᴍ. ᴛᴏ ᴄᴏʀʀᴇᴄᴛ ᴛʜɪs ᴅᴇғᴇᴄᴛ, ᴀ ᴘᴇʀsᴏɴ ɪs ᴘʀᴇsᴄʀɪʙᴇᴅ ʙɪғᴏᴄᴀʟ ʟᴇɴs ᴛʜᴀᴛ ʜᴀs ʙᴏᴛʜ ᴛʏᴘᴇs ᴏғ ʟᴇɴsᴇs ᴄᴏɴᴠᴇx ᴀɴᴅ ᴄᴏɴᴄᴀᴠᴇ.♡

Answer 2

Answer:

An eye that suffers from myopia as well as from hypermetropia is said to suffer from presbyopia. A person with this defect cannot see objects distinctly placed at any distance from him. To correct this defect, a person is prescribed bifocal lens that has both types of lenses ��� convex and concave.

Explanation:

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