How To Achieve 20/20 Vision
: Eyeglasses, Contact Lenses, Lasik Surgery, Ortho-K
Hyperopia : Nearsightedness- can not see from a distance
: Eyeglasses, Contact Lens, Lasik Surgery
Astigmatism – Blurred vision is due to the inability of the eye to bring an object into sharp focus near or far. The shape of the lens or the cornea in astigmatism deviates from the regular spherical shape; Astigmatism is sometimes referred to as football-shaped eyes. Astigmatism can affect nearsighted or far sighted people.
Prescriptions : Eyeglasses, Contact Lenses, Lasik Surgery
Keratoconus : The structure of the cornea thins and changes shape; causing distortion to vision and sensitivity to light. Keratoconus can also take the form of irregular corneal astigmatism.
Prescriptions : Eyeglasses, Contacts, Corneal Transplant Surgery, Ortho K
Presbyopia : A condition of the eye where there is a diminished ability to focus on near objects.
: Eyeglasses, Contacts, Lasik Surgery, Ortho-K
Cosmetic : No Condition Existing and Visual Acuity Is normal; contacts and or glasses are used as a fashion accessory.
Prescriptions : Plano lens.
Prescriptions in Detail
Corrective Eye Glasses or Contact Lenses can be used to correct most conditions. The myopia – Corrections for near-sightedness will have negative diopter strengths and a concave lens
Hyperopia – Corrections for farsightedness will have positive diopter strengths and a convex lens
Astigmatism – Corrections for astigmatism will have negative or positive diopter strength as it occurs in both nearsighted (myopia) and farsighted (hyperopia) and a cylindrical shaped lens is used  Two different strengths are placed at right angles in the same lens.
In addition, a positive or negative number is used to determine the cylinder degree of astigmatism. A higher number indicates a high degree of astigmatism.
The axis is also measured in degrees to determine the shape of the cornea or lens as it deviates from the normal spherical orientation.
Keratoconus – Narsighted contact lenses or eye glasses are usually recommended.
Presbyopia – Corrections for Presbyopia will have a convex lens – reading glasses or bifocal lenses are used.
The upper part of the bifocal lens is prescribed for distance (see myopia) and the lower part of the lens is prescribed for near vision (see hyperopia).
Bifocal lenses and reading glasses use a combination of positive and negative diopter strengths. A negative diopter (to correct hyperopia) will result in a diopter power equal to the sum (ie -2 diopter plus +5 diopter = +3 Diopter or 3D).
Cosmetic – A non-prescription Plano lens is used with a frame to wear as a fashion accessory or colored contact lens to change eye color.
Lasik eye surgery also known as laser eye surgery, is a surgery to correct myopia, hyperopia, and astigmatism. Lasik eye surgery is not recommended for anyone with even a small amount of keratoconus; Instead, a corneal transplant is required to regain vision if the keratoconus condition is severe.
In Lasik eye surgery, laser is used to reshape the cornea with the goal of improving visual acuity and eliminating the use of eye glasses or contact lenses.
Common side effects include halos, starbursts, night blindness, ectasia (dilation of the eyes), and eye dryness.
Orthokeratology or Ortho is a non-surgical procedure used to correct nearsighted vision. Astigmatism, Keratoconus and Post Refractive Surgery (Lasik Surgery) can also be treated using this system. Many doctors believe the best candidates for Ortho-K have -4.00 D (diopter) or less of myopia and little or no astigmatism.
Ortho-K involves corneal reshaping using a specialized gas permeable contact lens, worn during sleep to reshape the cornea and improve vision after the lens is removed.
The results of Ortho-K are temporary; thinking only about 24 hours. To achieve clear vision without the use of contacts or eye glasses, repetition of the procedure is required every night to nurture the proper corneal shape.
Two FDA approved brands for Ortho-K overnight corneal reshaping include
Paragon CRT (Paragon Vision Sciences Corneal Refractive Therapy) and Vision Shaping Treatment [Bausch+LombVST 19659020] Fitting by a certified eye care practitioner who has training in the procedures of each brand is required.
The goal of the Ortho-K procedure is 20/20 vision or 20/40 vision, which is the legal minimum for driving.
Ortho -K may be a better alternative to Lasik eye surgery if you are concerned about dry eyes as dry eyes sometimes worsens with the Lasik Procedures.
- Published On : 4 years ago on March 14, 2018
- Author By : 346@dmin
- Last Updated : March 14, 2018 @ 8:43 am
- In The Categories Of : Uncategorized