An Indian 2-step slit lamp is a widely used ophthalmic instrument, particularly prevalent in clinics and hospitals across India due to its balance of functionality, durability, and affordability. These models typically offer two fixed levels of magnification (e.g., 10x and 16x, or sometimes 10x and 25x), which are easily switched via a lever or revolving drum mechanism.

They provide a clear, magnified, and stereoscopic view of the anterior and, with the aid of diagnostic lenses, posterior segments of the eye. Key components include a binocular microscope for the examiner, and an illumination unit that projects a variable slit of light onto the eye. This slit can be adjusted in width, length, and angle, and often includes various filters (e.g., cobalt blue for fluorescein staining, red-free for nerve fiber layer examination, yellow, and neutral density) for enhanced diagnostic capabilities.

Modern Surgical Kolkata prioritize robust construction, often using durable materials and simple, reliable mechanisms. Many models follow the “Zeiss style” or “Haag-Streit style” design, which are established industry standards for their ergonomic and optical performance. These 2-step slit lamps are a workhorse in ophthalmology, enabling detailed examinations of the eyelids, conjunctiva, cornea, iris, lens, and anterior vitreous, crucial for diagnosing conditions ranging from dry eye and corneal abrasions to cataracts and glaucoma. Their ease of use and consistent performance make them a cornerstone of routine eye care in the region.