Defects & Solutions

Presbyopia is a universal condition associated with the aging eye’s diminishing ability to focus on close objects. It is neither a disease nor a defect. People usually discover this trouble during their mid-forties, and can correct it with lenses adapted to their various needs. Although presbyopia i...

The spots, floaters and flashes we sometimes see in our line of vision are part of a natural process. While they may be bothersome at times, in most cases these shadows and “light shows” are not harmful. However, if there is a sudden increase in the number of spots and floaters, if light flashes con...

Astigmatism is a common vision defect most often caused by an irregularly shaped cornea, which blurs and distorts eyesight. Although some degree of astigmatism is found in most people, those with problematic, moderate or severe astigmatism should seek correction. Special prescription glasses and con...

Medical name: strabismus
Other names: eye misalignment, squint, wandering eyes, wall eyes

In a person with “crossed-eyes,” one or both eyes point in different directions because the muscles in and around one or both eyes are not working in a coordinated manner. Causes of this defect are diverse,...

Color blindness is a vision defect in which colors are not seen normally. The various degrees of color blindness are caused by the state of the color receptors found at the back of the eye. While there is no cure for color blindness, personalized methods of color identification and visual aids can h...

Medical names: hyperopia, hypermetropia.
Other common name: longsightedness, long-sight.

Farsightedness is a common vision defect caused by the shape and length of the eye, and may be accentuated by environmental stresses. Farsighted people see distant objects clearly and close objects less clea...

Medical name: myopia
Other common names: shortsightedness, closesightedness

Nearsightedness is a common vision defect caused by the shape and length of the eye, and may be accentuated by environmental stresses. Nearsighted people can see close objects clearly and distant objects less clearly. Sp...