The power of the cornea is reduced by lengthening of the radius of curvature. The power of the lens is reduced by lengthening radii of curvature and the effectivity of the lens is reduced by deepening of the anterior chamber. Ametropia results when these changes are not proportional. The active mechanism involves the feedback of image focus information from the retina and consequent adjustment of the axial length. Defective image formation interferes with this feedback and ametropia then results. Heredity determines the tendency to certain globe proportions and environment plays a part in influencing the action of active emmetropisation. The maintenance of emmetropia in the adult in spite of continuing lens growth with increasing lens thickness and increasing lens curvature, which is known as the lens paradox, isGarth

Originally raised in Laurel, MD, Garth. is a singer, producer & multi-instrum...

Originally raised in Laurel, MD, Garth. is a singer, producer & multi-instrumentalist now based in New York City. Human Nature, his first musical offering as a solo artist, blends influences ranging from '90s R&B and '80s pop to the more electronic production of today.

Vim & Vigor

Vim & Vigor is an ensemble pop-folk band from Washington, D.C. With influence...

Vim & Vigor is an ensemble pop-folk band from Washington, D.C. With influences ranging from Amy Winehouse to Mumford & Sons to The Head and The Heart, Vim & Vigor produces a sound that is unique and earnest, with rich harmonies and layers of instrumentation. Vim & Vigor released its debut self-titled EP in 2016 and the "Coming Home" EP