Which statement is true about the uses of contact lenses with visually impaired patients?

Which statement is true about the uses of contact lenses with visually impaired patients?

• A. They can dampen nystagmus
• B. They cannot correct refractive needs
• C. They are not used for glare control
• D. They cannot be used for cosmetic purposes

Answer: (A)

When considering how contact lenses help visually impaired patients, the important idea is that they can stabilize the image on the retina. Nystagmus causes involuntary, repetitive eye movements that blur vision. A contact lens sits on the eye and moves with it, unlike glasses which sit in front of the eye. This integration with the moving eye reduces the amount of retinal image motion (retinal slip) the person experiences, which can make fixation steadier and lessen the perceived motion. In some individuals, this steadier image helps dampen the amplitude of the nystagmus, improving functional vision. It's also true that contact lenses can correct refractive errors, can be used to manage glare for some wearers, and can be chosen for cosmetic purposes. So the notion that contact lenses cannot correct refractive needs, or cannot be used for glare control or cosmetics, is not accurate. The statement about dampening nystagmus reflects a real, beneficial effect seen in certain patients.

When considering how contact lenses help visually impaired patients, the important idea is that they can stabilize the image on the retina. Nystagmus causes involuntary, repetitive eye movements that blur vision. A contact lens sits on the eye and moves with it, unlike glasses which sit in front of the eye. This integration with the moving eye reduces the amount of retinal image motion (retinal slip) the person experiences, which can make fixation steadier and lessen the perceived motion. In some individuals, this steadier image helps dampen the amplitude of the nystagmus, improving functional vision.

It's also true that contact lenses can correct refractive errors, can be used to manage glare for some wearers, and can be chosen for cosmetic purposes. So the notion that contact lenses cannot correct refractive needs, or cannot be used for glare control or cosmetics, is not accurate. The statement about dampening nystagmus reflects a real, beneficial effect seen in certain patients.