Question

which lens is prescribed by doctor the patient is suffering with gradual weakening of ciliary muscles and diminishing flexibility of eye lens​

Answer 1

Answer:

this defect is called presbyopia

bi focal lens

Answer 2

Answer:

A 'bifocal lens' is prescribed by the doctor to patients suffering from "weakening of ciliary muscles".

Explanation:

• Due to age-related gradual weakness of the 'ciliary muscles', the flexibility of adjusting and accommodating the eye lens to see objects at near and far distances diminishes.
• This diminishing accommodation leads to both "myopia and hypermetropia, or presbyopia".
• In order to correct both the defects, the bifocal accommodative intraocular lens that is both concave and convex are prescribed.
• Distant vision is done through the upper part of the glass and near vision through the lower part of the glasses.
• Progressive lenses that accommodate both visions progressively also can be used.