Christopher Joseph Rudnisky MD MPH FRCSC


Vision Problems: Living With Poor Eyesight

You don’t see as well as you used to. Eye problems such as age-related macular degeneration (AMD), glaucoma, cataracts, or diabetic retinopathy may be making it hard to work and manage many of your daily activities. But don’t give up. There are lots of things you can do to adapt to low vision and make your life easier…

Intraocular Pressure

Intraocular (say “in-truh-AW-kyuh-ler”) pressure is the pressure caused by the fluid inside the eye that helps maintain the shape of the eye. The level of pressure inside the eyes depends on: How much fluid is produced inside the eye. Whether fluid can travel normally through the eye. How well the fluid drains from the…

Cone Cells

Cone cells are a type of cell in the retina, the layer at the back of the eye that responds to light. Cone cells detect color. There are three types of cones: red, green, and blue. People with color vision problems may have different amounts of each cone type, or they may be completely missing one, two, or three of the…

Optic Nerve

The optic nerve is the nerve at the back of the eye that carries visual information from the eye to the brain.