Acuvue Oasys for Astigmatism
Acuvue Oasys for Astigmatism are disposable soft contact lenses that are indicated for the optical correction of visual acuity in patients with astigmatism. Astigmatism is the most common vision problem, caused by an irregular shape of the cornea.
Types of Acuvue Oasys lenses for Astigmatism
There are Two Types, Acuvue daily contacts and Acuvue extended contacts. Acuvue daily contacts are for single use while extended contacts are used frequently up to six nights or 7 days with cleaning and disinfection with chemical disinfection only.
It is recommended to wear the contact lens on a daily basis and if successful, then extended wear can be used as determined by your eye doctor.
Warnings:
Extended wearing of contact lenses have been shown to increase the risk of infection of the eye and you should not wear these Contact lenses overnight or continuously for 24 hours unless supervised by your eye doctor.
Structures:
1- Water
It makes 38% of contact lens weight.
2- Silicone Hydrogel material (senofilcon A)
It makes 62% of lens weight. Silicone hydrogel lenses decrease corneal hypoxia by providing 98% of available oxygen to the cornea. This material is called hydrophilic because it loves water and has the ability to absorb it and this will make the lens softer and more flexible.
3- Hydraclear Plus technology
With wetting agent that allows a high amount of a wetty rich environment for the lens and cornea even in challenging and dry environment. This Hydraclear Plus technology gives smooth surface of the contact lens which makes blinking very smooth as you are not wearing any contact lens.
4- UV Blocker
UV Blocker helps to protect against harmful ultraviolet radiation to reach inside the eye. These contact lenses will not completely cover the globe and the surrounding area of eyelid and skin and can’t be a replaced proper protective eyewear such as UV-absorbing sunglasses or goggles
5- Visibility Tinted
Visibility Tinted with UV Blocker is tinted blue using Reactive Blue Dye 4 to make the lens more visible for handling.
Prescription Parameters
• The standard diameter of Acuvue Oasys for Astigmatism is 14.5mm.
• Base curve is 8.6mm.
• Available powers range from +6.00D to -9.00D With cylinder power up to -2.25D.
Indications of Acuvue Oasys for Astigmatism
1- Nearsightedness with astigmatism (myopic astigmatism).
2- Farsightedness with astigmatism (hyperopic astigmatism).
3- Mixed astigmatism.
4- Phakic or aphakic.
5- Therapeutic Use as a Bandage Lens.
