The shape and design of an eye glasses lens depend on the type of vision problem a person has.

Optical Aids

For Sight

Optical aids for sight can be either hand-held or clip-on devices. They are used to improve visual perception by changing lighting, contrast, and spatial relationships.

Viewing Tasks

They are also useful for longer-term viewing tasks, such as television, sports, and plays. They may also be used to aid in reading or writing.


Low-vision optical aids are also available and are designed to help the person with low vision use their remaining eyesight as much as possible.


They also function as guides and make it easier to focus on non-visual cues. Low-vision aids differ from ordinary glasses and magnifiers because they are much more powerful.


They can magnify objects within their field of vision and reduce glare. In addition, they require specialized training in order to use them effectively.


The cornea is the clear front part of the eye and its job is to bend light to reach the retina and be translated into visual information.


The surgery can also be done on people who have presbyopia, a condition that affects the ability to focus on objects close to you. This can make it difficult to read small print or perform close-up tasks. People who have this condition can compensate by having nearsightedness, but LASIK surgery can eliminate this.


LASIK is a two-step procedure that uses advanced laser technology to reshape the cornea. It can correct a variety of refractive errors, including astigmatism and nearsightedness.

People Recover

Although most people recover well from LASIK surgery, it is important to be patient and follow the doctor's advice. Some patients experience temporary visual disturbances, but this should be minor and will not affect daily activities.


The vision is typically stable for a day or two after the surgery. However, some patients may require eyeglasses or contact lenses to correct vision problems. It also offers a variety of eye care products and services, including Optical aids


PRK patients experience a longer recovery period and may experience minor discomfort. The procedure may also lead to temporary or permanent dry eyes.