Dictionary > Night myopia

Night myopia

night myopia
In dark adaptation the eye becomes more sensitive to shorter wave lengths (purkinje shift), and visual acuity depends on parafoveal blue cones. Shorter wavelengths come into focus in front of the retina, and this chromatic aberration accounts for some of the relative myopia that a normal eye experiences at night; much of the remainder is due to an increase in accommodative tone in the dark.
pathologic myopia, progressive myopia marked by fundus changes, posterior staphyloma, and subnormal corrected acuity.
Synonym: degenerative myopia, malignant myopia.
prematurity myopia, myopia observed in infants of low birth weight or in association with retrolental fibroplasia.


You will also like...

Types and Causes of Brain Damage
Types and Causes of Brain Damage

This tutorial describes the different types and causes of brain damage. Find out how genetics, physical injury, lack of ..

Cell structure
Cell Structure

A typical eukaryotic cell is comprised of cytoplasm with different organelles, such as nucleus, endoplasmic reticulum, G..

Biological Viruses
Biological Viruses

Viruses possess both living and non-living characteristics. This unique feature distinguishes them from other organisms...

Cells in different stages of meiosis
Meiosis – The Genetics of Reproduction

Meiosis is a form of cell division that creates gametes. It is comprised of two divisions that in the end, the resulting..

Birth of a Human Baby
Birth of a Human Baby

Following nine months inside the mother's womb is the birth of the baby. Know the different stages of the birthing proce..

bryophyte - sporophyte and gametophyte
Meiosis and Alternation of Generations

Plants are characterized by having alternation of generations in their life cycles. This tutorial is a review of plant m..