

## Direct lenses
<ul>
  <li>Angle is directly visualised through the contact lens</li>
  <li>Examples</li>
  <ul>
    <li>Koeppe</li>
    <li>Richardson</li>
    <li>Barkan</li>
    <li>Wurst</li>
    <li>Swan-Jacob</li>
  </ul>
</ul>

## Indirect
<ul>
  <li>Light rays are reflected by a mirror in the contact lens</li>
  <li>Examples</li>
  <ul>
    <li>Goldmann</li>
    <li>Zeiss</li>
    <li>Posner</li>
    <li>Sussman</li>
  </ul>
  <li>Scleral-type (Goldmann):</li>
  <ul>
    <li>Larger</li>
    <li>Require coupling solution</li>
    <li>Better stability and eyelid control</li>
    <li>Compression will narrow angle by pushing on sclera</li>
  </ul>
  <li>Corneal-type (Zeiss, Sussman):</li>
  <ul>
    <li>Smaller</li>
    <li>No coupling solution needed</li>
    <li>
      Facilitates dynamic indentation gonioscopy: can discriminate appositional from synechial angle
      closure
    </li>
    <li>Compression will open angle by pushing aqueous in</li>
  </ul>
</ul>


Direct lenses Angle is directly visualised through the contact lens Examples Koeppe Richardson Barkan Wurst Swan-Jacob Indirect Light rays are reflected…

Clinical Techniques

Gonioscopy

Intro

FRCOphth Part 1 Study Notes

Orbit and ocular adnexae

Orbit

Extraocular Muscles

Orbital Blood Vessels

Paranasal Sinuses

Lacrimal Glands

Tear Film

Eyelids

Blinking

Anterior segment - ocular surface

Conjunctiva

Conjunctivitis

Sclera

Cornea

Corneal Structure And Development

Corneal Physiology

AC to Lens

Angle

Ciliary Body

Aqueous Humour Dynamics

Iris

Pupil

Lens

Posterior segment

Choroid

Vitreous

Retinal Macrostructure

Neurosensory Retina

Retinal Pigment Epithelium

Neuroanatomy

Venous Sinuses

Cerebral Ventricles

Cerebral Blood Supply

Supranuclear Gaze Pathways

Head And Neck Autonomic Nervous Supply

Head And Neck Glands

Osteology

Nerves

Muscles And Pharyngeal Arches

Extraocular Nerves

Sensory Nerves

Physiology

Physics Of Blood Flow

Neuronal Control Of Blood Vessels

Oxygen-Haemoglobin Dissociation Curve

Cytochrome p450

Pituitary Gland

Thyroid Hormone Production

Insulin

Glucagon

Parathyroid Hormone

Corticosteroids

Catecholamines

Cardiac Cycle

Renal Physiology

Fluid Balance

Acid-Base Balance

Muscle Physiology

Sensory Fibres

Cutaneous Receptors

Endocytosis

Glycosaminoglycans

Condensed Ocular Biochemistry

Eye Movements

Accomodation

Vision

Visual Cycle And Phototransuction

Visual Pathway

Visual Acuity

Colour Vision

Binocular Vision

Pathology

Collagen

Tissue Damage

Inflammation

Disease Entities

Wound Healing

Thrombosis / Atherosclerosis

Cell Growth

Neoplasia

Histopathology

Nystagmus

Free Radicals And Antioxidants

Immunology

Ocular Immunology

Microbiology

Viral Infections

Bacterial Infections

Fungal Infections

Protozoa

Nematodes

Antimicrobials

Genetics

Chromosomes

Mitosis

Meiosis

Genes

Polypeptide Synthesis

Histones

MicroRNA

Hardy-Weinberg Equilibrium

Mutations

Chromosome Defects

Autosomal Inheritance

X-Linked Inheritance

Mitochondrial Inheritance

Multifactorial Inheritance