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Anatomy of the Eyeball

Anatomy of the Eyeball

The eye is a spherical, hollow structure composed of three tissue layers. The outer layer — the fibrous tunic, comprises the sclera — a white structure — and the cornea, which is transparent. The sclera encompasses some of the ocular surface, most of which is not visible. However, the 'white of the eye' is distinctively visible in humans compared to other species. The cornea, a clear covering at the front of the eye, enables light penetration. The eye's middle...

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Related Experiment Video

Updated: Sep 8, 2025

Where You Cut Matters: A Dissection and Analysis Guide for the Spatial Orientation of the Mouse Retina from Ocular Landmarks

Where You Cut Matters: A Dissection and Analysis Guide for the Spatial Orientation of the Mouse Retina from Ocular Landmarks

Published on: August 4, 2018

Retinal Histology and Anatomical Landmarks.

Andrea Andrade¹, Stephen H Tsang², Tarun Sharma³

¹Universidade Federal de Pernambuco, Recife, Brazil.

Advances in Experimental Medicine and Biology

|July 30, 2025

Summary

This summary is machine-generated.

This chapter details the three main layers of the eye wall: the sclera, choroid, and retina. It also describes Bruch

Keywords:

Histology Macula Retina

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Area of Science:

Ophthalmology
Anatomy
Histology

Background:

The eye wall comprises three distinct layers: sclera, choroid, and retina.
Bruch's membrane is situated between the choroid and retina.
Each layer possesses unique characteristics and can be further subdivided.

Purpose of the Study:

To provide a detailed examination of the retina, Bruch's membrane, and choroid.
To elucidate the structural intricacies of these key ocular components.

Main Methods:

Descriptive analysis of ocular wall layers.
Detailed histological review of the retina, Bruch's membrane, and choroid.

Main Results:

The sclera serves as the protective outer layer.
The choroid provides nourishment to the outer retina.
The retina contains photoreceptor cells crucial for vision.

Conclusions:

Understanding the detailed structure of the retina, Bruch's membrane, and choroid is essential in ophthalmology.
This detailed description serves as a foundational reference for further study in ocular anatomy and disease.