Contact Lens is thin filmy lens placed on cornea of our eyes. It substitutes wearing of cumbersome spectacles whose weight settles on wearer’s nose straining it. Contact lens serves same purpose of vision correction but light in weight and sustains beauty of face and aesthetics of one’s looks.

HISTORY and DETAILS: Credit goes to Leonardo Darvincy for his idea of contact lenses in 1508 Codex of the eye, Manual D. He discussed about altering vision by immersing eyes in water. He did not discuss about contacts. In 1636, Scientist Rene Descartes tried by placing a tube filled with water and clear glass ends to correction of vision but was unsuccessful. In 1801 scientist Thomas Young developed an eye cup filled with water. But he did not make any serious attempts for vision correction. In 1845 John Herschel came out with vision corrective ideas. A capsule of glass having jelly inside and a mold of cornea-like appearance was used to form or mold a transparent medium. In 1929 Dr.Dallos piggy backed above idea and made perfect making molds from living eyes. Lens manufacturers took a challenge to make a perfect molding exactly suiting cornea. Mr.Adolf Eugen Fick of Zurich fabricated first afocal scleral contact shells, which rested on rim tissue around cornea. In 1888 German Mr.August Muller developed glass blown scleral contacts to correct his own vision. In 1930s Polymethyl Methacrylate (PMMA or Perspex / Plexiglas) was developed for plastic scleral lenses manufacture. In 1935 Mr. William Feinbloom developed lighter and convenient lenses made of plastic and glasses. In 1949 first corneal lens exactly fitting on cornea only was made. How ever this prohibited oxygen entry. In 1990 oxygen permeable contacts were developed, with RGP or rigid gas permeable materials. Modern soft Contact lens was invented by Czech chemists M/s Otto Wichterle and Drahoslav Lim the first gel to produce contacts. Later developments of soft (Hydrogel) lenses allowed oxygen to move through lens to ocular surface It was colorless. Now -a- days’ bluish tint with UV coating to avoid damage to cornea and also use it like a pair of sun glasses were made. They are clearly visible while cleaning. In 1990, high oxygen permeable silicone gels were marketed and a breakthrough.
Read the rest of this entry »

EYES are the windows for a person. Located below forehead and on either side of nose, and gives a mesmerizing effect and no one can escape the eyes of a person. Eyes have the capacity to look at an object. The lens inside the eyes allows light rays from objects pass through and falls on the retina. Retina is supported by a bunch of nerves; which carry this signal and delivers to the brain. The brain reads the images rightly and makes us to “SEE” things, objects, persons, scenario… Caring for the eyes is a great job that we have to do and no explanation is required about what will happen if we cannot see objects

CARE is a few things that, for the sake of the eyes, that we DO and DO NOT Do.
Read the rest of this entry »

EYES are the windows for a person. Located below forehead and on either side of nose, and gives a mesmerizing effect and no one can escape the eyes of a person. Eyes have the capacity to look at an object. The lens inside the eyes allows light rays from objects pass through and falls on the retina. Retina is supported by a bunch of nerves; which carry this signal and delivers to the brain. The brain reads the images rightly and makes us to “SEE” things, objects, persons, scenario… Caring for the eyes is a great job that we have to do and no explanation is required about what will happen if we cannot see objects
Read the rest of this entry »