ABSTRACT
OBJECTIVE: The aim of this study was to assess changes in subfoveal choroidal thickness (SFCT), measured using swept-source optical coherence tomography (SS-OCT), after routine phacoemulsification cataract surgery. DESIGN: This is a prospective, interventional, controlled study that took place at Shahzad Eye Hospital, Karachi, Pakistan, between February 2015 and January 2016. PARTICIPANTS: One hundred and one patients who were undergoing routine cataract surgery were recruited. One eye per patient was included. The unoperated fellow eyes acted as controls. METHODS: Swept-source optical coherence tomography scans were performed preoperatively, 1 week postoperatively, and 1 month postoperatively. Two independent graders evaluated the scans to measure the SFCT. The SFCT was measured and recorded for OCT scans from each visit. The general linear model repeated analysis technique was used to assess data from the 3 different time intervals, and paired t tests were used to assess a statistically significant difference between mean preoperative and postoperative SFCT. Probability values of less than 0.05 were considered to be statistically significant. RESULTS: The mean preoperative SFCT in the study eye was 272.9 ± 96.2; SFCT was 278.9 ± 101.4 (p = 0.051) and 281.5 ± 105.2 (p = 0.01) at week 1 and month 1, respectively. In the control eyes, the mean measurement of preoperative SFCT was 274.2 ± 98.5; measurements were 273.8 ± 100.7 (p = 0.875) and 277.9 ± 103.1 (p = 0.063) at week 1 and month 1, respectively. CONCLUSIONS: There was a gradual increase in SFCT at 1 month after cataract removal in the study eyes. The effect was more pronounced in younger individuals and nondiabetic individuals.
Subject(s)
Choroid/pathology , Phacoemulsification/methods , Postoperative Complications/diagnosis , Tomography, Optical Coherence/methods , Visual Acuity , Female , Follow-Up Studies , Humans , Incidence , Male , Middle Aged , Pakistan/epidemiology , Postoperative Complications/epidemiology , Prognosis , Prospective Studies , Time FactorsABSTRACT
PURPOSE: To determine the incremental benefit of swept-source optical coherence tomography (SS-OCT) in identifying occult macular disease preoperatively in patients scheduled for routine cataract surgery. SETTING: Shahzad Eye Hospital, Karachi, Pakistan. DESIGN: Prospective case series. METHODS: Preoperative SS-OCT scans were performed in all patients scheduled to have cataract surgery between January and March 2016. Scans were subsequently reviewed for the presence of macular abnormalities. Patients with clinically detectable retinal pathologies were excluded. RESULTS: Of the 179 eligible patients, 155 were included in the study. Macular pathology was noted in 17 patients (10.9%). The most commonly identified conditions were age-related macular degeneration (n = 5), idiopathic epiretinal membrane (n = 4), and vitreomacular interface abnormalities (n = 4). Other abnormalities included cystoid macular edema (n = 2) and ellipsoid zone abnormalities (n = 2). Media opacities precluded interpretation of 9 scans (4.7%). CONCLUSIONS: Swept-source OCT was an effective noninvasive modality for detecting macular structural abnormalities, especially in the presence media opacities. Optical coherence tomography imaging should be considered as an adjunct to routine dilated fundus examination for macular evaluation, particularly if premium intraocular lenses are being considered.
