| The 3D Clip-Ons fit nicely over most Rx glasses, and allow visually impaired moviegoers to enjoy their experience as much as their emmetropic friends. |
| In a normal or emmetropic eye the curvature of the cornea is such that entering rays are focused on the retina, forming a clear image. |
| Without accommodation, a presbyopic, emmetropic eye which is perfectly corrected for near vision, will see the letters blacker on a green background, or with the same contrast on either background. |
| With increasing age, more children are found in the emmetropic category and fewer in the low hypermetropic category. |
| This ability of accommodation decreases progressively with age and causes presbyopia in emmetropic patients at the age of about 45 year-old. |
| An emmetropic person means the image received by his eye projects exactly on his retina. |
