UK Guide To Laser Eye Surgery Part 2 Your Prescription

Slideshow Transcript

1. Slide 1: The Essential Guide to Laser Eye Surgery PART 2: Reading your prescription www.focusclinics.com FOCUS Laser Vision 0845 5000 500
2. Slide 2: Normal sight: Distance vision is good because focusing is exactly on the retina www.focusclinics.com Normal eye Refractive errors
3. Slide 3: www.focusclinics.com Refractive errors = needing glasses • The effect of a refractive error is an image that falls somewhere other than exactly on the retina at the back of your eyes. Short sight
4. Slide 4: What does a prescription look like? Example: -3.00/-1.00 x 180 www.focusclinics.com
5. Slide 5: A prescription has 3 basic numbers Sphere (SPH) Cylinder (CYL) Axis -3.00 -1.00 180 1 2 3 www.focusclinics.com
6. Slide 6: A prescription has 3 basic numbers 1 Sphere (SPH) Cylinder (CYL) Axis -3.00 -1.00 180 1 2 3 1. The basic correction, written as Sphere or SPH (because we correct it with a spherical lens). The higher this first number, the worse the vision. A minus means short sight and plus means long sight www.focusclinics.com
7. Slide 7: 2 A prescription has 3 basic numbers Sphere (SPH) Cylinder (CYL) Axis -3.00 -1.00 180 1 2 3 2. The amount of extra distortion from astigmatism, on top of the basic blurring -written as Cylinder or CYL because we use a so-called ’cylindrical‘ lens to fix it. www.focusclinics.com
8. Slide 8: A prescription has 3 basic numbers Sphere (SPH) Cylinder (CYL) Axis 3 -3.00 -1.00 180 1 2 3 3. The precise angle this cylinder lens should be tilted to give the sharpest vision, written as Axis (between one degree and 180 degrees – 180 is horizontal and 90 vertical). www.focusclinics.com
9. Slide 9: So what kind is this? Example: -3.00/-1.00 x 180 • This prescription is for short sight because it has a MINUS number first (-3.00) • There is a small amount of astigmatism because there is a second number (-1.00) • If there is no astigmatism, the second (and third) numbers are missing www.focusclinics.com
10. Slide 10: Presbyopia (ageing eyes) •if you also require help for reading, there will be a FOURTH number on your prescription •this is found at the end under ADD FOCUS Laser Vision www.focusclinics.com
11. Slide 11: 4 Reading addition Example: Add -3.00/-1.00 x 180 +2.00 • This reading part is called an ADD because it is in addition to your distance prescription • You can have this add built in to bifocal or varifocal glasses, or wear two separate pairs, one for distance and one for reading www.focusclinics.com
12. Slide 12: www.focusclinics.com This means YOU! EVERYONE will need to wear glasses in their lifetime, either for distance or reading or both!
13. Slide 13: Laser eye surgery • All glasses problems can now be treated with laser eye surgery • Biggest advances have been in treating near vision for age related presbyopia • Reading correction is available from FOCUS Laser Vision www.focusclinics.com
14. Slide 14: 0845 5000 500 www.focusclinics.com FOCUS Laser Vision Choose once, choose right