In middle age, the lens of the eye becomes less flexible and less able to thicken and thus less able to focus on nearby objects, a condition called presbyopia. Reading glasses or bifocal lenses can help compensate for this problem. The number of mucous cells in the conjunctiva may decrease with age. Tear production may also decrease with age, so that fewer tears are available to keep the surface of the eye moist. Both of these changes explain why older people are more likely to have dry eyes.
When the Whites of the Eyes are Red or Yellow
Retinoblastoma | Eye Conditions | Vision Express
Yellow eyes in photos could be sign of rare eye disease
However, in dim light, his eyes may cast a ghoulish green glow, a diluted blue shade or even a beautiful purple hue. For answers, we contacted two leading veterinary ophthalmologists: Dr. In the dark, canine eyes react to exposure to light differently than human eyes because dogs along with cats and many other animals possess a light-reflecting surface known as the tapetum lucidum, located between the optic nerve and the retina.
A beautiful adult young black-white cat with big yellow eyes and pink velvet wet nose scrambles on a tree in the garden in autumn — Photo by qklatan. Photo "A beautiful adult young black-white cat with big yellow eyes and pink velvet wet nose scrambles on a tree in the garden in autumn" can be used for personal and commercial purposes according to the conditions of the purchased Royalty-free license. The image is available for download in high resolution quality up to x