{"id":1995,"date":"2026-10-20T08:55:06","date_gmt":"2026-10-20T08:55:06","guid":{"rendered":"https:\/\/laseristanbulclinic.com\/eye-health\/retina-glaucoma\/trabeculectomy-recovery-and-success-rates\/"},"modified":"2026-10-20T12:59:52","modified_gmt":"2026-10-20T12:59:52","slug":"trabeculectomy-recovery-and-success-rates","status":"publish","type":"page","link":"https:\/\/laseristanbulclinic.com\/en\/eye-health\/retina-glaucoma\/trabeculectomy-recovery-and-success-rates\/","title":{"rendered":"Vision Loss After Trabeculectomy: Recovery Time and Success Rates"},"content":{"rendered":"\n
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  4. Vision Loss After Trabeculectomy: Recovery Time and Success Rates<\/span><\/li><\/ol><\/div>\t\t\t

    Vision Loss After Trabeculectomy: Recovery Time and Success Rates<\/h1>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t
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    \"Retina<\/figure>\n\t\t\t\t\t\t\t\t\t

    Vision loss after trabeculectomy is usually temporary or treatable. Blurred, watery vision is normal for up to six weeks. The most common lasting cause of reduced sharpness is cataract; sudden permanent loss of central vision (“wipe-out”) is rare, mainly in eyes with very advanced damage. Trabeculectomy protects the sight you still have; it cannot restore sight already lost. Glaucoma surgery here is performed by Prof. Dr. Ahmet Sat\u0131c\u0131.<\/p><\/div>\n\t\t\t\t\t<\/div>\n\t<\/div><\/div>\n<\/section>\n\n\n\n\n

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    Will I lose vision after trabeculectomy?<\/h2>\n\t\t\t\t

    Most people notice blurred vision after trabeculectomy, and for most it fades. After glaucoma surgery your eye may water and look red, and your vision may be slightly blurred for up to 6 weeks before it returns to normal, according to Moorfields Eye Hospital’s patient guidance. That is the everyday picture. The question behind the search “vision loss after trabeculectomy” is a harder one: can the operation leave you seeing worse than before? In a minority of eyes it can, and the cause matters, because some causes are treatable and one is not.<\/p>\n

    A classic review of 508 eyes after trabeculectomy (Costa et al., 1993) looked for any loss of two or more lines of vision within the first three months. 42 eyes (8.3%) lost vision. The causes were:<\/p>

    Cause of vision loss<\/th>Eyes in that study<\/th>What it means for you<\/th><\/tr><\/thead>
    Lens clouding (cataract)<\/th>16<\/td>The most common cause. Treatable with cataract surgery<\/td><\/tr>
    Low eye pressure that affects the macula (hypotony maculopathy)<\/th>6<\/td>Found at check-ups; the surgeon looks for the cause, which sometimes means revising the bleb<\/td><\/tr>
    “Wipe-out” (loss of central vision with no other explanation)<\/th>4<\/td>Rare; linked to advanced damage and older age<\/td><\/tr><\/tbody><\/table><\/div>

    Source: Costa VP et al., Ophthalmology 1993 (see Sources). This is an older study and surgical technique has changed. Use it for the pattern of causes, not as today’s exact risk.<\/p><\/div>\n\t\t\t

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    Why is cataract the most common cause?<\/h3>

    Trabeculectomy makes a cataract more likely to form or to progress. In the Collaborative Initial Glaucoma Treatment Study (CIGTS), 57 of 285 patients (20%) who had trabeculectomy went on to have cataract surgery during an average of 7.2 years of follow-up. A separate analysis of the same trial found that initial surgery places a patient at higher risk of needing cataract extraction than starting with drops, and that vision-related quality of life improved after the cataract was removed. An earlier Cochrane review of medical versus surgical treatment likewise concluded that reduced vision, cataract and eye discomfort are more likely with trabeculectomy than with medication.<\/p>\n

    In practice: if your vision becomes hazy months or years after trabeculectomy, the lens is a likely cause, and your surgeon plans cataract surgery with the bleb in mind. Cataract surgery is part of the work of all three of our surgeons: Prof. Dr. Ahmet Sat\u0131c\u0131, Do\u00e7. Dr. Muhammet Derda \u00d6zer (Do\u00e7. is the Turkish title for Associate Professor) and Op. Dr. Aysan Bayram. {{confirm with surgeons: cataract surgery in eyes with an existing trabeculectomy bleb}}<\/span><\/p><\/div><\/div><\/div>\n\t\t\t\t

    What is “wipe-out” and how likely is it?<\/h3>

    Wipe-out means a sudden, unexplained and permanent loss of the last central vision after glaucoma surgery, in an eye that already had very advanced field loss. A 2025 review in Diagnostics<\/em> found that incidence figures in studies published before 2000 ranged from under 1% to 13%, while contemporary prospective studies and large reviews put it frequently below 1%. The risk factors it lists are severe field loss (especially “split fixation”, where the field loss already splits the point of fixation), older age, low pressure in the first days after surgery, and poor blood supply to the optic nerve head. A 2022 prospective study of 30 eyes with advanced glaucoma and split fixation saw no wipe-out; the three eyes that lost two lines or more at two months had cataract or choroidal detachment.<\/p>\n

    This is why your surgeon asks how much central field you still have before recommending trabeculectomy, and why lowering pressure gradually matters in advanced disease. Wipe-out is not a reason to avoid surgery your glaucoma needs; it is a reason to plan it carefully.<\/p><\/div><\/div><\/div>\n\t\t\t\t

    Other causes of vision loss to know about<\/h3>