[
    {
        "id": "osp-12844",
        "type": "article-journal",
        "title": "Evaluating a new surgical dosage calculation method for esotropia",
        "author": [
            {
                "family": "Agrawal",
                "given": "Siddharth"
            },
            {
                "family": "Singh",
                "given": "Vinita"
            },
            {
                "family": "Gupta",
                "given": "Sanjiv Kumar"
            },
            {
                "family": "Agrawal",
                "given": "Saurabh"
            }
        ],
        "URL": "https://omanscience.com/en/articles/evaluating-a-new-surgical-dosage-calculation-method-for-esotropia",
        "language": "en",
        "issued": {
            "date-parts": [
                [
                    2013
                ]
            ]
        },
        "container-title": "Oman Journal of Ophthalmology",
        "volume": "6",
        "issue": "3",
        "page": "165-169",
        "DOI": "10.4103/0974-620x.122270",
        "publisher": "Medknow Publications",
        "ISSN": "0974-620X",
        "abstract": "Purpose: To evaluate a simplified method for correction of ocular deviation in patients of infantile and acquired basic esotropia.\n\nMaterials and methods: Thirty-six consecutive patients of infantile and acquired basic esotropia were selected for this study. Patients underwent unilateral recession-resection surgery as per the new norm gram. Patients underwent 3.5-7 mm recession of medial rectus (MR) in one eye depending on the pre-operative deviation and patient's age. Together they also underwent 6 or 7 mm resection of the lateral rectus (LR) in the same eye depending on patient's age (6 mm for 3 years and below and 7 mm for older age). In patients 3 years and below, a correction of 6, 7, or 8 PD/mm of recession of MR was expected when the pre-operative deviation was lesser than 30 PD, between 30 and 60 PD, or above 60 PD, respectively. Similarly, these values were 5, 6, and 7 PD/mm of MR recession in patients above 3 years. A ratio between achieved and expected correction was calculated and the calculation was deemed successful for a patient if this ratio fell between 0.9 and 1.1.\n\nMethods: Thirty-six consecutive patients of infantile and acquired basic esotropia were selected for this study. Patients underwent unilateral recession-resection surgery as per the new norm gram. Patients underwent 3.5-7 mm recession of medial rectus (MR) in one eye depending on the pre-operative deviation and patient's age. Together they also underwent 6 or 7 mm resection of the lateral rectus (LR) in the same eye depending on patient's age (6 mm for 3 years and below and 7 mm for older age). In patients 3 years and below, a correction of 6, 7, or 8 PD/mm of recession of MR was expected when the pre-operative deviation was lesser than 30 PD, between 30 and 60 PD, or above 60 PD, respectively. Similarly, these values were 5, 6, and 7 PD/mm of MR recession in patients above 3 years. A ratio between achieved and expected correction was calculated and the calculation was deemed successful for a patient if this ratio fell between 0.9 and 1.1.\n\nResults: The calculation procedure was successful in 33 out of 36 patients (91%). The two-tailed probability on paired Wilcoxon test was 0.187.\n\nConclusions: This simplified method of surgical dosage calculation using MR recession as basis is predictable in patients of infantile and basic Esotropia. It may serve as a useful tool for minimizing variability of surgical results."
    }
]