Posts Tagged optics

The Must Have Stylich Accessory is the Glasses Case

The most recent fad to sweep us in the UK is the eyeglasses case. This is thought to be due to the extra amount of time people use the computer leading to higher sales in eye glasses resulting in the need for the glasses case.

Understanding Acuvue Oasys Contact Lenses

The Acuvue brand of contact lenses are manufactured by Johnson & Johnson. Acuvue has patented the HYDRACLEAR technology which uses an embedded silicon wetting agent to keep the lenses moist. The Acuvue Oasys employs an upgraded version of HYDRACLEAR. Acuvue Advance lenses uses the original HYDRACLEAR technology. Some other models of Acuvue lenses are the Acuvue 2 and 1-DAY Acuvue.

How Spectacles Have Been Used To Correct Visual Errors

The strength of reading glasses was originally based on the patient’s age. For a man of 30″40 years lenses of 2 degrees were used, for 70″80 years, lenses of 4 degrees. It wasn’t until the middle of the 19th century that glasses started to be issued by people who knew some basics about optics.