ABC of eyes. Refractive errors.

ABC of eyes. Refractive errors.

Divergent rays of light Indistinct vision is most commonly caused by errors of refraction. Doctors do not often have to deal with this problem because patients are usually prescribed glasses by an optometrist. It is extremely important, however, to ask the question: "Is this patient's poor vision caused by a refractive error?" The use ofa simple "pinhole" made in a piece ofcard will help to det...

Management of refractive errors.

Centre for Eye Research Australia, University of Melbourne, Royal Victorian Eye and Ear Hospital, Melbourne, Australia Vision Cooperative Research Centre, Sydney, Australia The Fred Hollows Foundation New Zealand, Auckland, New Zealand The Fred Hollows Foundation, Sydney, Australia International Agency for Prevention of Blindness, Western Pacific Region, Melbourne, Australia International Counc...

Characteristics of peripheral refractive errors of myopic and non-myopic Chinese eyes

Interest in peripheral refractive errors has increased as it was hypothesized that peripheral hypermetropia might provide a stimulus for axial elongation (Smith et al., 2005), this study was to determine relative peripheral refractive errors (RPRE) of the eyes of a group of Chinese children and adults. Central and peripheral (20 degrees , 30 degrees , 40 degrees at nasal, temporal, superior and...

Refractive Errors & Refractive Surgery Preferred Practice Pattern®.

ABC of eyes. Acute visual disturbance.

In assessing a patient who has experienced an acute disturbance of vision in an uninflamed eye an accurate history is crucial, because it may be that a longstanding visual defect has only just been noticed by the patient. It is important to make this differentiation as this alters the range of diagnoses and the urgency of treatment. Acute visual disturbance ofunknown cause requires urgent refer...