The new title of Section 3, Clinical Optics and Vision Rehabilitation, reflects the expanded focus on vision rehabilitation, including a chapter addressing the wide range of vision rehabilitation interventions:: smartphone accessibility features and apps, electronic magnification devices, audio devices, and a variety of optical devices. In addition, this section provides a comprehensive overview of clinical optics, including current applications of optical phenomena such as lasers, spectacles, IOLs and refractive surgery.
This major revision begins with an expanded Quick-Start Guide, which now includes an extensive discussion on retinoscopy. The Quick-Start Guide includes seven Try It Yourself! exercises on Hand Neutralization of Spherical and Cylindrical Lenses, Making a Practice Eye and Detection of Astigmatism.
Increase your understanding of human eye optics; basic concepts of geometric optics; ophthalmic instruments and contact lenses with nine clinical videos. A new animation demonstrates a circularly polarized electromagnetic wave. Plus, a new dynamic illustration allows modification of live drawings to experience the effects of changes in the positions of source objects and focal points. Both print and digital version users have access to the videos and activities.
Upon completion of Section 3, readers should be able to:: Outline the principles of light propagation and image formation and work through some of the fundamental equations that describe or measure such properties as refraction, reflection, magnification and vergence.Define the various types of visual perception and function, including visual acuity, brightness sensitivity, color perception and contrast sensitivity.Explain the optical principles underlying various modalities of refractive correction:: spectacles, contact lenses, intraocular lenses and refractive surgery.