This change was made as newer studies showed that best-corrected vision overlooks a larger proportion of the population who has visual impairment due to uncorrected refractive errors, and/or lack of access to medical or surgical treatment.Distance vision impairment:

Category 0: No or mild visual impairment –presenting visual acuity better than 6/18
Category 1: Moderate visual impairment –presenting visual acuity worse than 6/18 and better than 6/60
Category 2: Severe visual impairment –presenting visual acuity worse than 6/60 and better than 3/60
Category 3: Blindness –presenting visual acuity worse than 3/60 and better than 1/60
Category 4: Blindness—presenting visual acuity worse than 1/60 with light perception
Category 5: Blindness—irreversible blindness with no light perceptionNear vision impairment:

Near visual acuity worse than N6 or M.08 at 40 cm. United Kingdom
Severely sight impaired

Defined as having central visual acuity of less than 3/60 with normal fields of vision, or gross visual field restriction. Unable to see at 3 metres (10 ft) what the normally sighted person sees at 60 metres (200 ft).Sight impaired

Able to see at 3 metres (10 ft), but not at 6 metres (20 ft), what the normally sighted person sees at 60 metres (200 ft)
Less severe visual impairment is not captured by registration data, and its prevalence is difficult to quantifyLow vision

A visual acuity of less than 6/18 but greater than 3/60. Not eligible to drive and may have difficulty recognising faces across a street, watching television, or choosing clean, unstained, co-ordinated clothing.In the UK, the Certificate of Vision Impairment (CVI) is used to certify patients as severely sight impaired or sight impaired.
Hot tub folliculitis (pseudomonal folliculitis) is a common type of folliculitis, a condition which causes inflammation of hair follicles. : 272 This condition is caused by an infection of hair follicles by a non-pathogenic strain of the bacterium Pseudomonas aeruginosa. The bacterium is commonly found in hot tubs, water slides, and rarely in swimming pools. Children are more prone because they typically stay in the water longer than adults. Hot tub folliculitis appears on the skin in the form of a rash, roughly resembling chicken pox and then develops further to appear as a pimple. Hot tub folliculitis can be extremely painful and/or itchy, and left alone without scratching will go away much more quickly. If the rash is aggravated, it can stay, worsen, and spread, lasting for months. By that time, it is much more difficult to treat. In an immunocompetent person, the rash is self-limited and will usually resolve after about 7 to 10 days but the condition can leave a hyperpigmented lesion that goes away after a few months.Normally, the rash does not need specific treatment and will go away on its own. Antibiotics may be prescribed in some cases. If the rash continues to appear longer than the 7- to 10-day time period, a physician should be consulted. Folliculitis that is not treated properly could worsen and cause abscesses. See also
Skin lesion


== References ==