Refraction through spherical lenses
Lens: A piece of transparent material (such as glass) whose two opposite regular surfaces are either curved or one is curved and the other is flat and which is used…
Lens: A piece of transparent material (such as glass) whose two opposite regular surfaces are either curved or one is curved and the other is flat and which is used…
Explain About IOL Power Calculation Intraocular lens (IOL) power calculation is a crucial process in cataract surgery to determine the appropriate power of the artificial lens that will replace the…
Optical Coherence Tomography (OCT) is a non-invasive imaging technology used in various medical fields, particularly ophthalmology, cardiology, and dermatology, to visualize and assess biological tissues with high resolution and detail.…
INTRODUCTION: In the world of optics and photography, lens transparency plays a crucial role in determining the quality of images captured. Understanding what lens transparency is and how it affects…
Keratoconus is a relatively rare eye condition that affects the structure of the cornea, leading to visual impairment. While it’s not a well-known condition, understanding its symptoms, causes, and treatment…
Introduction – The human eye is a complex organ of vital importance for everyday life. Eyes are the parts of our body that perceive light to see the world and…
Introduction Vernal keratoconjunctivitis (VKC) is a recurrent, bilateral allergic inflammation of the conjunctiva. The episodes are often periodic and have seasonal recurrences. Seasonal exacerbations characterize the condition in the initial…
An eyelid is a thin fold of skin that covers and protects an eye. There are upper and lower eyelids. Many things can affect the eyelids or are related to…
Topography is evaluated using Placido disk patterns or mires reflected off of the tear film of the anterior cornea and converted to color scales. Because the image is generated off…
BENEFITS AND LIMITATIONS: Fogging test with plus lenses is a crucial procedure in the field of refraction, particularly in determining the accurate prescription for individuals with latent (masked) hyperopia as…
The Van Herrick technique is a quick and easy way to estimate anterior chamber depth, which allows grading of patients according to the likelihood of having primary acute closed-angle glaucoma.…