Vision

Vision
by
Arjun Subbiah

Anatomy of the Eye

Short Sight - Myopia

Myopic vision

Normal
Myopic

Treatment of Myopia

Glasses

Contact Lenses

Surgery - LASIK

Far Sight – Hypermetropia

Convex Lens Correction

Vision in Hyperopic
Normal
Hyperopia

Treatment for Hyperopia – Bifocal Glasses

Contact Lens

Excimer Laser for Hyperopia Correction

Astigmatism

Astigmatic Vision

LASIK for treatment of Astigmatism

Presbyopia
Presbyopia describes the condition where the eye exhibits a progressively diminished ability to focus on near objects with age.
Presbyopia's exact mechanisms are not known with certainty, however, the research evidence most strongly supports a loss of elasticity of the crystalline lens,
Although changes in the lens's curvature from continual growth and loss of power of the ciliary muscles (the muscles that bend and straighten the lens) have also been postulated as its cause.

Normal and Presbyopic Vision

Treatments
New Laser Treatment
A special kind of laser is used for cutting, a femtosecond laser (fs-laser), which is not only extremely precise, but which also makes very fine cut grooves. Since the size and position of the lens differ from patient to patient, control and monitoring of the cutting is done via optical coherence tomography (OCT). The grooves form gliding planes in the tissue of the lens and can restore elasticity.

Senile Cataract

Cataract
In the United States, age-related lenticular changes have been reported in 42% of those between the ages of 52 to 64, 60% of those between the ages 65 and 74, and 91% of those between the ages of 75 and 85

IOL Insertion Following Lens Removal

IOL Implantation following Removal of Lens

Diabetic Retinopathy

Diabetic Retinopathy vs. Normal Eye

Effects of Diabetic Retinopathy

Normal vs. Diabetic Retinopathy Vision

Vision

by Strider316 on Feb 03, 2010

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Vision — Presentation Transcript