How Good Is 'Good' Vision And When Is It No Longer Good Enough?

HOW GOOD IS GOOD' VISION AND WHEN IS IT NO LONGER GOOD ENOUGH? GOOD OR 20/20 VISION A human eye with nominal performance is able to separate lines that are spaced 1.75 mm apart from a distance of 6 meters (20 feet) or is able to clearly view a Snellen eye chart at the same distance. F P LРЕЪ HOW DO YOU KNOW WHEN YOU NEED EYESIGHT PECFD EDFCZ P CORRECTION? If you're asking the question and you're 35 years or older, chances are you've noticed at least a little change in your vision. FELOPZD DEFPOTE SYMPTOMS - TRUST WHAT T 80 NTERSTATE YOUR EYES ARE TELLING YOU Blurred vision X Double vision | Hazy vision E Glare or halos around bright lights | Eye strain X Headaches X Double Vision Squinting X COMMON EYE CONDITIONS GOOD VISION Light passes through the cornea, pupil and lens, focusing perfectly on the retina resulting in a sharp image. Retina NEARSIGHTEDNESS (MYOPIA) Elongation of the eye or abnormally shaped cornea or lens causes images to focus in front of the retina, resulting in blurred vision when viewing objects at a distance. Retina FARSIGHTEDNESS (HYPEROPIA) Sort eyeball or abnormally shaped cornea or lens causes images to focus behind the retina, resulting in blurred vision when viewing near objects. PRESBYOPIA A common age related vision disorder caused by the hardening of the lens and deterioration of muscle fibers around Retina the lens making it harder for the eye to focus on near objects. AND THEN THERE'S THAT STRANGE WORD 'ASTIGMATISM' .. One of the more difficult words to say, being equally hard to spell and on top of that with the eye being complex, it might actually be easier to first think about what astigmatism isn't. No Astigmatism Astigmatism Cornea symmetrical; even and smooth in all directions, like a basketball. shape: Spherical Cornea shape: Oblong, irregular, and non-symmetrical; flatter/steeper than others, like a football. and some areas are When light enters: Even, distributed refraction. Cornea and lens focus light onto the retina at back of the eye. When light enters: Uneven distribution; light is refracted in more than one direction at retina. Outcome: Objects appear clear; not distorted. Outcome: Refractive error; objects appear blurry and wavy due to refracted light reaching multiple parts of the retina. SOME INTERESTING NATIONAL STATISTICS (NED NEARSIGHTEDNESS (MYOPIA - NEAR OBJECTS APPEAR CLEAR, DISTANT OBJECTS APPEAR BLURRY) 18.80% 16.92% AGE AGE 31.47% 140-49 37.52% 1 40-49 14.44% 16.03% 1 50-54 1 50-54 1 55-59 155-59 1 60-64 1 60-64 1 65-69 14.54% 23.56% 15.67% I65-69 1 70-74 I 70-74 26.24% 75-79 75-79 15.65% 16.28% 80+ 20.04% 17.81% 21.18% 17.70% Nearly 18.5 million women in Nearly 15.6 million men in the United States suffer from nearsightedness (1.0 diopters or more) the United States suffer from nearsightedness (1.0 diopters or more) FARSIGHTEDNESS (HYPEROPIA - DISTANT OBJECTS APPEAR CLEARER THAN NEARER OBJECTS) 3.52% 3.76% 5.78% 6.86% AGE AGE 20.30% 7.76% 140-49 25.02% 9.70% 140-49 1 50-54 1 50-54 155-59 155-59 12.97% 10.05% 1 60-64 1 60-64 п 65-69 65-69 17.30% 22.34% 70-74 70-74 75-79 75-79 12.50% 80+ 16.38% 80+ 14.89% 19.55% Nearly 5.7 million men in the United States suffer from farsightedness (3.0 diopters or more) Nearly 8.5 million women in the United States suffer from farsightedness (3.0 diopters or more) 11 Americans over the age of 12 could see better with the use I of contact lenses, or by opting MILLION for surgery where appropriate HALF can be prevented if diagnosed and treated at the OF ALL BLINDNESS right time LESSON LEARNED? Regular Eye Exams Comprehensive dilated eye exams (Ophthalmoscopy) can help the eye care professional detect vision problems or early stages of eye diseases. Symptoms of Potentially Greater Systemic Diseases Dilated eye exams can also help in detecting serious potential health issues such as high blood pressure and diabetes, even when there are no other warning signs. Contact Lenses or Glasses? The exam will also indicate whether you need contacts/glasses or alternative treatment. GOOD VISION LEADS TO HEALTHIER, HAPPIER LIVES - EAT HEALTHY AND ALWAYS PROTECT YOUR EYES ©) Infographic by: Cheap-ContactLensesOnline .COM Source: National Eye Institute - National Institutes of Health (http://www.nei.nih.gov)