Physiology of eye
1. Mechanism and structure of the cornea
Cornea is an epithelium of cells lining the inside of our eyes and located in back of your eyeball. It’s made up of a thin outer membrane, smooth muscle layer that runs across its surface. The inner membrane is lined by cuboidal epithelial layers that are both transparent and regular, and is separated into lobules which are translucent or opaque. Each of you eye has 50000–70000 µm2 of the inner epilial membrane. Cornea also consists of an outer nuclear membrane (inner nuclear membrane), its basement membrane and an air space inside your eyeball. Inside the inner nuclear membrane are some protein filaments that help maintain and protect your DNA and molecules and help fight off foreign particles. Along with proteins that act as a barrier to ionizing radiation in your eye and body, these filaments help protect against infection and injury. Inside the outer nuclear membrane are the ribosomes, structures similar to a miniature set of molecular scissors. Ribosomes cut your messenger RNA’s strands for copying and translating it into its corresponding amino acid. This makes sure your genome is properly replicated and translated into functional proteins.
2. Anatomy of cornea and function
Cornea, is very important part of vision. Cornea has 3 layers; 1) Outer Nuclear Layer 2) Inner Mitral Lateral Nucleus 3) Inner Mitral Lateral Nucleus 4) Ocular Surface
3. Function of Cornea
The main functions of cornea are to focus light rays on the surface of your retina and give that light some color. It can also clear up dark spots on your retina due to glare.
4. Causes of Cataract and glaucoma
Cataract is a condition where the lens capsule gets blurred by cataract and causes light sensitivity to light, such as red or blue. Glaucoma is a condition where fluid inside your eye grows out of the center of your optic nerve, causing an increased pressure inside the eye. These two conditions have many causes but the most common cause is age; ageing. When you reach around 20 to 30, it’s a bit more common. Your eye cells don’t grow like they used to. This can lead to glaucoma and cataract and increase the risk for other diseases like macular degeneration, diabetic retinopathy and corneal opacification. Symptoms include blurred vision, headache, nausea and tiredness. You can reduce this risk by controlling your age and taking care of your health.
We hope this post helped you understand better about what a cornea and how it works and why it affects us. If you still have questions about this topic that you’re interested in trying out please drop an email at [email protected]
Here’s my blog post regarding further information about “Cornea: Anatomy and Functions”
If you have any related questions about eye, I encourage you to ask them in the comment section below!
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