SLIDE 5 3/8/17 5
SO, WHAT’S AN EYE EXAM ALL ABOUT?
So, you've just had an eye exam and your optometrist or ophthalmologist has given you an eyeglass prescription. He or she probably mentioned that you are nearsighted or farsighted, or perhaps that you have astigmatism. But what do all those numbers on your eyeglass prescription mean? And what about all those abbreviated terms, such as OD, OS, SPH and CYL? This article will help you decipher all parts of your prescription and discuss it knowledgeably with an optician when you're buying eyeglasses. What OD and OS Mean The first step to understanding your eyeglass prescription is knowing what "OD" and OS" mean. They are abbreviations for oculus dexter and oculus sinister, which are Latin terms for right eye and left eye. Your eyeglass prescription also may have a column labeled "OU." This is the abbreviation for the Latin term oculus uterque, which means "both eyes.“ Though the use of these abbreviated Latin terms is traditional for prescriptions written for eyeglasses, contact lenses and eye medicines, some doctors and clinics have opted to modernize their prescriptions and use RE (right eye) and LE (left eye) instead of OD and OS. You may have noticed that on your prescription form the information for the right eye (OD) comes before the information for the left eye (OS). Eye doctors write prescriptions this way to avoid making errors, because when they face you, they see your right eye at left (first) and your left eye at right (second).
TESTING VISUAL ACUITY USING THE TRIAL LENS SET
MATERIALS REQUIRED: ü Trial lens kit (shown) ü Vision Clinic Record ü Snellen Chart ü Reading material to determine current visual acuity ü Appropriate reading glasses or far-vision glasses
June 18, 2017 Cusco 14 Romano Juarez 42 M +2.25 GR Beginning of Pterygium. Gave eye drops and sunglasses
Reading Glasses Strength Test 1. To determine the proper strength for your reading glasses, follow the steps below. 2. Hold the page approximately 12-14 inches away from your face 3. Start reading the chart below from top to bottom. If you can’t read the top line, move to the next line down and repeat this process until you can clearly read a full line 4. When you can clearly read a line, stop and look to the strength listed for that line. The strength listed is the proper strength you’ll need for your reading glasses
+3.25 If you can read this, 3.25 is the proper strength for you. +2.75 If you can read this, 2.75 is the proper strength for you. +2.50 If you can read this, 2.50 is the proper strength for you. +2.25 If you can read this, 2.25 is the proper strength for you. +2.00 If you can read this, 2.00 is the proper strength for you. +1.75 If you can read this, 1.75 is the proper strength for you +1.50 If you can read this, 1.50 is the proper strength for you +1.25 If you can read this, 1.25 is the proper strength for you. +1.00 If you can read this, 1.00 is the proper strength for you.
