The LOCS III is an improved LOCS system for grading slit-lamp and retroillumination images of age-related cataract.

—To develop the Lens Opacities Classification System III (LOCS III) to overcome the limitations inherent in lens classification using LOCS II. These limitations include unequal intervals between standards, only one standard for color grading, use of …

Many types of grading systems have been used to describe cataract severity. Commonly used systems in epidemiological studies include the Lens Opacity Classification System (LOCS, LOCS II, and LOCS III), the Oxford Clinical Cataract Classification and Grading System, and the Johns Hopkins system.

The LOCS III system [23] uses six slit-lamp images for grading nuclear colour and nuclear opalescence and five retro illumination images for evaluating cortical cataract and posterior...

Oct 4, 2024 · One key difference between the LOCs and LOCS III systems is their grading scales for nuclear opalescence, cortical cataract, and posterior subcapsular cataract. The scales used by each system may differ in their range and criteria for grading, which can impact the assessment of cataract severity.

To determine the diagnostic accuracy of Pentacam Cataract Grading Scale (PCGS) versus the Lens Opacities Classification System (LOCS III) in scaling pure age-related cataract. Between April 2016 and May 2017, eyes of 281 patients were evaluated for grading of lens opacity. We used LOCS III and PCGS.

LOCS III grading scales include lens opacities defined as NO, NC, C, and P cataracts with 6 degrees of extent (ie, severity). The LOCS III uses a set of 6 slit-lamp images of nuclear cataracts and 5 retroillumination images of cortical or posterior subcapsular cataracts.

Developed by the Epidemiologic Study of Cataract Study Group, LOCS III provides standardized photographic standards to systematically evaluate four distinct types of lens opacities: Nuclear color (NC) – Grades the color or brunescence of the nucleus from 1 (normal) to 6 (brunescent).

Jun 1, 1993 · The LOCS III is an improved LOCS system for grading slit-lamp and retroillumination images of age-related cataract and contains an expanded set of standards that were selected from the Longitudinal Study of Cataract slide library.

Recent advancements in imaging technologies have allowed researchers to create automatic systems that can locate lens landmarks and provide cataract grading scores that correlate well with LOCS III clinical grades.