Biomaterial Database

Role of vergence accommodation in correcting for night myopia. 1988

H W Leibowitz, and K W Gish, and J B Sheehy

Pennsylvania State University, University Park.

Although the dark-focus or resting position of accommodation provides a parsimonious interpretation of the anomalous myopias, in correcting for night myopia the role of vergence accommodation must be considered. Both contrast sensitivity (CS) and accommodation were determined for monocular and binocular observation without and with optical corrections based on the individual dark-focus. The data suggest that the availability of a stimulus for vergence accommodation may modify the magnitude of an optical correction for night myopia.

UI	MeSH Term	Description	Entries
D009216	Myopia	A refractive error in which rays of light entering the EYE parallel to the optic axis are brought to a focus in front of the RETINA when accommodation (ACCOMMODATION, OCULAR) is relaxed. This results from an overly curved CORNEA or from the eyeball being too long from front to back. It is also called nearsightedness.	Nearsightedness,Myopias,Nearsightednesses
D003290	Convergence, Ocular	The turning inward of the lines of sight toward each other.	Convergences, Ocular,Ocular Convergence,Ocular Convergences
D003624	Darkness	The absence of light.	Darknesses
D005133	Eye Movements	Voluntary or reflex-controlled movements of the eye.	Eye Movement,Movement, Eye,Movements, Eye
D005139	Eyeglasses	A pair of ophthalmic lenses in a frame or mounting which is supported by the nose and ears. The purpose is to aid or improve vision. It does not include goggles or nonprescription sun glasses for which EYE PROTECTIVE DEVICES is available.	Glasses,Spectacles,Sun Glasses, Prescription,Glasses, Prescription Sun,Prescription Sun Glasses
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000065	Accommodation, Ocular	The dioptric adjustment of the EYE (to attain maximal sharpness of retinal imagery for an object of regard) referring to the ability, to the mechanism, or to the process. Ocular accommodation is the effecting of refractive changes by changes in the shape of the CRYSTALLINE LENS. Loosely, it refers to ocular adjustments for VISION, OCULAR at various distances. (Cline et al., Dictionary of Visual Science, 4th ed)	Accommodation, Lens,Ocular Accommodation,Ocular Distance Accommodation,Accommodation, Ocular Distance,Distance Accommodation, Ocular,Lens Accommodation,Ocular Distance Accommodations
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults
D012684	Sensory Thresholds	The minimum amount of stimulus energy necessary to elicit a sensory response.	Sensory Threshold,Threshold, Sensory,Thresholds, Sensory