Sharpening vision through the centuries

c. 2650–2600 BC Renowned as the first physician in recorded history, Imhotep (c. 2650–2600 BC) contributed to the advances in medicine with early surgical techniques, which likely encompassed treatments for eye diseases. 2250 BC The Code of Hammurabi (2250 BC) included one of the earliest references to medical treatments for eye conditions, specifying rewards and penalties for successful and unsuccessful eye surgeries. 384–322 BC Aristotle (384–322 BC) advanced the understanding of eye anatomy through animal dissections, describing the optic nerve and various eye layers. 330–260 BC Herophilus (330–260 BC), also known as the father of anatomy, conducted extensive dissections and described the eye’s internal structures, including the optic nerve and the lens. 980–1037 AD The Canon of Medicine by Avicenna (980–1037 AD) details numerous ophthalmic conditions and treatments, influencing medical practice for centuries.

1514–1564 Andreas Vesalius (1514–1564) pioneered modern anatomy, including detailed studies of the eye, which provided a foundation for future anatomical research. 1535–1607 Georg Bartisch (1535–1607), often considered the father of modern ophthalmology, published the first comprehensive book on eye diseases and surgery, Ophthalmodouleia. 1643–1727 Sir Isaac Newton’s (1643–1727) work on light and optics, particularly his theories on the nature of light and color, revolutionized the scientific understanding of vision. 1706–1790 Benjamin Franklin (1706–1790) invented bifocal lenses in the 18th century, allowing for improved vision at multiple distances. 1851 German physician Hermann von Helmholtz (1821–1894) invented the ophthalmoscope, a groundbreaking instrument that allowed doctors to look inside the living eye. 1812–1887 Ferdinand Ritter von Arlt (1812–1887) made significant contributions to the study and treatment of refractive errors and was the first physician to prove that myopia is a consequence of excessive axial length of the eye. 1828–1870 Albrecht von Graefe (1828–1870) developed new surgical techniques for treating glaucoma and cataracts and founded the first specialized eye clinic. 1884 Karl Koller (1857–1944), an Austrian ophthalmologist, introduced the use of cocaine as a local anesthetic in eye surgery. 1862–1930 Allvar Gullstrand (1862–1930), a Swedish ophthalmologist and the only Nobel laureate for ophthalmology, made significant contributions to the understanding of the optical system of the eye and the development of corrective lenses.

1917 Shinobu Ishihara (1879–1963) created the Ishihara color test, a breakthrough in diagnosing color blindness. 1920s Pilocarpine, a medicine derived from Pilocarpus, was introduced for glaucoma, marking a significant breakthrough in reducing intraocular pressure. 1949 Harold Ridley (1906–2001) performed the first intraocular lens implant, which laid the groundwork for modern cataract surgery. 1912–2006 Charles Schepens (1912–2006) developed the binocular indirect ophthalmoscope, enhancing the ability to diagnose the back of the eye and treat retinal diseases.

1950 The introduction of corticosteroids became vital for treating inflammatory eye diseases such as uveitis and allergic conjunctivitis. 1961 Fluorescein angiography, in which a fluorescent dye is injected to highlight blood vessels, improved the diagnosis and management of retinal conditions. 1978 The development of beta-blockers provided the basis for new therapies for glaucoma, in which the optic nerve is affected. 2004 Anti-vascular endothelial growth factor (VEGF) therapy transformed the treatment of wet age-related macular degeneration, in which abnormal blood vessels grow in the back of the eye and damage the macula. Since the 1990s The development and widespread use of OCT technology, which allows for sub-surface images of the eye, provided high-resolution imaging of the retina. The advent of ultrasound bio-microscopy, which uses high-frequency waves to produce detailed images of the anterior segment of the eye, including the cornea, iris, ciliary body, and lens, added further clout to diagnostics. 2017 The FDA approved the first gene therapy for an inherited retinal disease, marking a significant advance in treating genetic causes of blindness. Ongoing Research in gene editing technologies such as CRISPR offer hope for curing previously untreatable genetic eye disorders and potential cures for conditions like retinitis pigmentosa and Stargardt disease.