Smartphone Gonioscopy With a Magnifying Intraocular Lens: A Cost-effective Angle Imaging Device

Abstract

Gonioscopy is an important part of glaucoma diagnosis and management. Imaging and documentation of the anterior chamber angle has been previously performed using slit-lampassisted photography or using smartphones with or without an attached macro lens. Smartphones have transformed ophthalmic imaging by virtue of their availability, easy use, and portability. In this report, the authors aim to demonstrate gonio-imaging using a smartphone attached with an intraocular lens which behaves like a macro lens. With the patient in a sitting position or in the supine position, a goniolens is placed on the patient's cornea. A smartphone with a 10 D intraocular lens attachment over its camera is used to take images or videos of the anterior chamber angle with high magnification. This imaging modality is cost-effective and can be used for screening and photographic documentation of the angle, and can be of immense benefit, especially in primary health care centers.

Smartphone co-aided cobalt blue anterior segment with intraocular lens photography

“…[ 5 ] Smartphone attachments have been developed, which are now capable of capturing high-definition images of the ocular surface, anterior segment including the angles, and posterior segment alike. [ 4 6 7 ] Given the ease and ambulatory nature of smartphones, it is safe to say that this would be the future of ophthalmological practice, especially in centers where high-end ophthalmic imaging devices cannot be afforded. In low–resource clinical setups, smartphones are often used to obtain and document external ocular photographs, especially in emergency rooms.…”

Red-Free (Green) Filter-Enhanced Gonioscopy with Smartphone: A Pilot Study

“…With the introduction of smartphones, the use of portable ocular imaging devices has played a significant role in modernizing ophthalmic treatment [14]. Currently, smartphones can capture high-definition photos and videos of the entire eye, including the ocular surface, anterior and posterior segments, and angles [15,16]. Smartphones are an excellent and highly portable option for practicing ophthalmology, especially in regions where costly imaging equipment is not readily accessible.…”

Perioperative Care of the Patient with Eye Pathologies Undergoing Nonocular Surgery

“…Smartphone and other portable devices enable these measurements to be conducted at the bedside without losing critical time transporting to the eye office or clinic. 207,208 A diagnosis can also be made rapidly using a penlight; with narrow angles, a shadow is visible in the nasal side of the iris. 209 Vision can be successfully preserved using medications to rapidly lower intraocular pressure, as well as via definitive therapy by a peripheral iridectomy, or a lens extraction.…”