1 / 14

Presbyopia

Presbyopia. Gabriel Russell. What is Presbyopia?. Presbyopia literally means: farsightedness due to ciliary muscle weakness and loss of elasticity in the crystalline lens. Presby: “Old man” Opia: “eye”

damara
Download Presentation

Presbyopia

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Presbyopia Gabriel Russell

  2. What is Presbyopia? • Presbyopia literally means: farsightedness due to ciliary muscle weakness and loss of elasticity in the crystalline lens. Presby: “Old man” Opia: “eye” • Presbyopia is said to occur when a person can no longer focus on near objects due to lack of lens accommodation. This condition is usu. due to aging.

  3. Other forms of vision:

  4. Lens Accommodation

  5. Ciliary Muscles and Lens of the Eye

  6. Accommodation of the Lens • Is defined as the process in which the lens undergoes change to maintain clear focus. • Accommodation is mostly a reflex but can be consciously controlled. Young Person Eye: Older(over 40yrs old) Eye: Can focus from distance to 7cm Will not be able or will begin to have in 350 milliseconds. trouble focusing on near objects.

  7. Why does Presbyopia take place? • It is the natural hardening and loss of elasticity of the optical crystalline lens . • Its not known the exact causes of Presbyopia • Most Scientist have observed it as a natural course of the aging in human beings.

  8. Treatments for Presbyopia: • Since Presbyopia is consider a “fixed focus/vision” status correction is the only option. • They include. *Reading Glass for patients 20/20(Normal vision or good distance sight). *Bifocals, Trifocals, and Progressive Lens for those who do not see well at distances or have astigmatism. (A study in BMJ (British medical journal) stated that Bifocals where linked to 35% of all falls involving the elderly)

  9. Treatments Continued: • The study also suggested the elderly use non-multifocus lens when traveling stairs. • Surgeries:Some claim reversal of presbyopia ( still awaiting FDA approval. *Corneal Surgery (FDA approved) *SRP (Surgical Reversal of Presbyopia)..in clinical trials *IOL (Intraocular Lens Implants)…planning trials

  10. Treatments Continued • Monovision: which is when one eye(usu. Dominant eye) is corrected for distance vision and the weaker eye is semi-corrected for near vision it can be done by LASIKs or Contact Lens. (Eyes must be trained/ Pres. Ronald Reagan used Monovision for speeches).

  11. Equal Opportunity Disorder *Presbyopia affects everyone as they age. (Onset may vary but will be seen after 40yrs of age) *Its doesn’t discriminate

  12. Preventive Measures and Practices: • Make regularly scheduled Eye appointments • Remember “The 20-20-20 Rule” *Take (20)seconds, to look(20) feet away, every 20 minutes. this will help to prevent long term damage to eyes…particularly the crystalline lens.

  13. References • http://www.agingeye.net/otheragingeye/presbyopia.php • www.mayoclinic.com • www.wikipedia.com

  14. Presbyopia Youtube.com links • What is presbyopia? • Think About This: Presbyopia and Progressive Lenses

More Related