Comparison of Two Biometers in Dense Cataracts

Inclusion Criteria: * Adults aged 45 years and older * Previously underwent complex cataract removal by phacoemulsification with a clear corneal incision in one or both eyes more than 1 month before enrollment * Complex cataract removal was performed for poor red reflex or poor visualization due to lens density or opacification * Pre-operative dense cataract in the study eye, defined as greater than or equal to 3+ posterior subcapsular cataract, 3+ nuclear sclerotic cataract, 3+ cortical cataract, or any combination of these * Pre-operative biometry performed with both the ARGOS and IOLMaster 700 * Other than cataract, clear intraocular media, with no corneal opacity or vitreous hemorrhage Exclusion Criteria: * Pre-operative mature or white cataract in the study eye * Any corneal abnormality, other than regular corneal astigmatism, that in the opinion of the investigator would confound study outcomes * History of or current retinal condition, or predisposition to retinal conditions, other than posterior vitreous detachment, that in the opinion of the investigator would confound study results * Amblyopia or strabismus in either eye * Nystagmus or other condition that would hamper axial length capture because of poor fixation * History of or current anterior or posterior segment inflammation of any etiology * Any form of ocular neovascularization * Diagnosed degenerative eye disorders * Acute or chronic disease or illness that, in the opinion of the investigator, would confo…