Eye diseases such as age-related macular degeneration, diabetic retinopathy, keratoconus, glaucoma, and severe dry eye require timely and condition-specific interventions to prevent irreversible vision loss. Advancements in ophthalmology now offer a wide range of targeted procedures designed to restore visual function, control disease progression, and improve quality of life.
This article provides a comprehensive overview of nine effective treatments-anti-VEGF therapy, photodynamic therapy, corneal transplant, punctal plugs, scleral contact lenses, orthokeratology, laser trabeculoplasty, corneal collagen cross-linking, and vitrectomy-used in contemporary eye care. Each section covers what the procedure treats, how it is diagnosed, the intervention method, expected outcomes, and cost considerations in the Indian healthcare context.
The article proceeds from injection-based and light-activated therapies to corneal surgeries, contact lens modalities, and pressure-lowering glaucoma procedures. It also addresses supportive technologies and reconstructive techniques for structural eye conditions. Supplementary guidance includes when to seek medical attention for ocular symptoms, followed by a data-based recommendation for a leading multispecialty eye hospital.
1. Anti-VEGF Therapy
Anti-vascular endothelial growth factor (anti-VEGF) therapy treats retinal diseases by blocking the activity of VEGF, a protein that triggers the formation of abnormal blood vessels in the eye. This treatment is used for conditions such as wet age-related macular degeneration (AMD), diabetic macular edema (DME), and proliferative diabetic retinopathy (PDR).
Diagnosis involves imaging techniques such as optical coherence tomography (OCT) and fluorescein angiography (FA). OCT identifies fluid accumulation or retinal swelling, while FA detects abnormal vessel leakage.
The procedure includes injecting anti-VEGF medication directly into the vitreous cavity of the eye. Anti-VEGF therapy is performed under local anaesthesia in a sterile outpatient setting. Patients typically receive three monthly injections during the loading phase, followed by extended intervals based on response.
Commonly used medications include ranibizumab (Lucentis), aflibercept (Eylea), and bevacizumab (Avastin). Lucentis and Eylea are approved for ocular use and offer targeted action, while Avastin is used off-label due to its affordability.
In India, the cost per injection varies: Avastin costs approximately ₹2,000-₹5,000, Lucentis ranges from ₹20,000-₹30,000, and Eylea may cost between ₹30,000-₹40,000 per dose. The total expense depends on the number of injections and the selected drug.
The therapy is well tolerated when administered correctly. Rare complications include intraocular infection, retinal detachment, or a temporary increase in eye pressure. Regular follow-up ensures safety and long-term control.
2. Photodynamic Therapy
Photodynamic therapy (PDT) treats retinal diseases using a light-activated drug to destroy abnormal blood vessels while preserving surrounding healthy tissue. It is primarily used for central serous chorioretinopathy (CSCR), polypoidal choroidal vasculopathy (PCV), and cases of wet age-related macular degeneration (AMD) unresponsive to anti-VEGF therapy.
Diagnosis involves fluorescein angiography (FA) and indocyanine green angiography (ICGA), identifying abnormal retina or choroid vascular networks. These imaging tests guide the selection of candidates for Photodynamic Therapy.
The procedure begins with intravenous infusion of verteporfin, a photosensitising agent. After 15 minutes, a low-intensity laser targets the abnormal area, activating the drug to produce reactive oxygen molecules. These molecules selectively damage the endothelium of abnormal vessels, leading to their closure.
Each session lasts approximately 20 minutes and is performed in an outpatient setting. Patients are advised to avoid direct sunlight and bright indoor light for 48 hours due to the risk of systemic photosensitivity.
Most patients require one to three sessions spaced three months apart, depending on disease response. Repeat treatment is guided by follow-up imaging and symptom recurrence.
Side effects include temporary back pain during infusion and mild vision disturbances. Serious complications, such as severe vision loss or inflammation, occur in less than 1% of cases.
In India, a single session of PDT using verteporfin typically costs ₹25,000-₹40,000, depending on the facility and drug pricing. Additional costs include diagnostic imaging and follow-up consultations.
3. Corneal Transplant
Corneal transplant restores vision by surgically replacing diseased or damaged corneal tissue with healthy donor cornea. This procedure treats conditions such as keratoconus, corneal scarring, Fuchs’ endothelial dystrophy, and bullous keratopathy.
Diagnosis includes slit-lamp examination, corneal topography, and pachymetry to assess corneal thickness, clarity, and structural abnormalities. Indications for surgery are based on reduced visual acuity, progressive distortion, or corneal decompensation unresponsive to medical therapy.
Three primary techniques are used. Penetrating keratoplasty (PKP) replaces the full corneal thickness and is indicated when all layers are compromised. Endothelial keratoplasty-including Descemet stripping endothelial keratoplasty (DSEK) and Descemet membrane endothelial keratoplasty (DMEK)-targets only the innermost layer, offering quicker recovery and lower rejection risk. Anterior lamellar keratoplasty preserves the healthy endothelium and is used for superficial scarring and keratoconus.
The corneal transplant surgery lasts 30-90 minutes and is performed under local anaesthesia with sedation. The choice of technique depends on disease location and extent of corneal damage.
Recovery time ranges from two weeks for endothelial keratoplasty to up to one year for full-thickness grafts. Visual rehabilitation includes topical steroids, stitches removal, and periodic refraction adjustments.
In India, corneal transplant costs between ₹40,000-₹1,20,000, depending on the surgical method, donor tissue quality, and hospital setting. Additional charges apply for diagnostics, medications, and follow-up care.
Common complications include graft rejection, astigmatism, elevated intraocular pressure, and infection. Early detection and intervention improve graft survival rates and visual outcomes.
4. Punctal Plugs
Punctal plugs treat dry eye disease by occluding the tear drainage openings in the eyelids to retain moisture on the ocular surface. This therapy is indicated for patients with aqueous-deficient dry eye who exhibit rapid tear film evaporation or drainage despite normal tear production.
Diagnosis is confirmed through tear breakup time (TBUT), Schirmer’s test, and ocular surface staining with fluorescein or lissamine green. These tests help determine tear volume, stability, and drainage characteristics.
Ophthalmologists perform the procedure in an outpatient clinic using slit-lamp guidance. No anaesthesia is required. The plug is inserted into the punctum of the upper or lower eyelid, depending on symptom distribution. Symptom relief typically occurs within 24-48 hours.
Two primary types of punctal plugs are available. Temporary dissolvable plugs made from collagen degrade over days or weeks and help evaluate the response. Semi-permanent plugs from silicone or thermolabile materials last for months or until manually removed. Sizes are selected based on punctal diameter for optimal retention.
In India, the procedure costs approximately ₹3,000-₹8,000 per eye, depending on the type of plug and clinical setting. Reinsertions or replacements may incur additional fees.
Mild side effects include foreign body sensation, excessive tearing, and plug extrusion. Rarely, plugs may cause canaliculitis or conjunctival irritation requiring removal and topical treatment.
5. Scleral Contact Lenses
Scleral lenses are large-diameter, rigid gas-permeable contact lenses designed to vault over the cornea and rest on the sclera. A saline-filled reservoir between the lens and cornea provides continuous hydration and optical correction for irregular or damaged corneal surfaces.
These lenses are used in keratoconus, post-LASIK ectasia, Stevens-Johnson syndrome, ocular surface disease, and severe dry eye. Diagnosis involves corneal topography, tomography, and tear film breakup time to assess shape distortion and ocular surface integrity.
The fitting process requires advanced imaging tools and experienced practitioners. Measurements of the anterior eye guide the design of custom lenses. Most patients undergo 2-4 fitting visits for optimal visual acuity and lens comfort.
Scleral lenses often restore functional vision when glasses or soft lenses fail. Many patients achieve visual acuity up to 20/20 despite significant corneal irregularity. The sealed tear reservoir reduces surface inflammation and improves epithelial healing.
Lenses typically last 1-2 years with proper care. Daily cleaning with peroxide-based solutions and saline rinsing is essential to maintain clarity and ocular health.
In India, scleral lenses cost between ₹25,000 and ₹60,000 per pair, including fitting and follow-up sessions. Additional costs apply for annual replacements or advanced customisations.
Common challenges include lens handling, initial discomfort, and fogging. Most patients adapt within one to two weeks with supervised training and follow-up.
6. Orthokeratology
Orthokeratology (Ortho-K) is a non-surgical vision correction method that uses specially designed rigid gas-permeable lenses to temporarily reshape the cornea during sleep. The lenses flatten the central cornea and alter its curvature to correct refractive errors, primarily low to moderate myopia.
Diagnosis includes visual acuity testing, manifest refraction, and corneal topography to assess the degree of myopia and determine corneal suitability. Candidates must have healthy ocular surfaces and a treatable prescription range, typically up to −6.00 diopters of myopia and −1.50 diopters of astigmatism.
The custom lenses are worn overnight and removed in the morning. Corneal reshaping produces clear unaided vision during waking hours, with effects lasting 24-48 hours. Most patients achieve measurable improvement after the first night, with optimal results seen within 1-2 weeks.
The treatment is fully reversible. Discontinuing lens use allows the cornea to return to its original shape. Ortho-K is also used in pediatric patients for myopia progression control.
Proper fitting requires corneal topography mapping and follow-up visits for lens adjustments. Lenses must be cleaned daily using peroxide-based solutions and stored in sterile containers.
In India, orthokeratology costs range from ₹25,000 to ₹60,000 per eye, including fitting, lens sets, and follow-up care. Replacement lenses and solution kits may incur additional annual costs.
Possible complications include corneal abrasions, microbial keratitis, or lens discomfort. Adherence to hygiene protocols and regular monitoring reduces risks and ensures long-term effectiveness.
7. Laser Trabeculoplasty
Laser trabeculoplasty is a minimally invasive glaucoma treatment that reduces intraocular pressure (IOP) by improving aqueous humour outflow through the trabecular meshwork. It is primarily used in patients with open-angle glaucoma who do not respond adequately to eye drops or cannot tolerate their side effects.
Diagnosis involves gonioscopy, optic nerve imaging, and IOP measurement to confirm open-angle anatomy and assess glaucoma severity. Candidates typically have elevated IOP despite medical therapy or are seeking to reduce dependence on medications.
There are two main techniques: argon laser trabeculoplasty (ALT) and selective laser trabeculoplasty (SLT). SLT has become the preferred method because it can selectively target pigmented trabecular cells without causing thermal damage, allowing repeat treatments when necessary.
The procedure is performed in an outpatient setting and takes 10-15 minutes. A laser is directed at the trabecular meshwork to induce biological remodelling and enhance fluid drainage. Patients report minimal discomfort, typically described as mild flashes or brief pressure sensations.
Intraocular pressure reduction begins within 2-4 weeks and stabilises by three months. SLT reduces IOP by 20-30% on average, with effects lasting 1-5 years depending on the patient’s response. Repeat sessions may be needed over time.
Post-procedure care includes anti-inflammatory eye drops for 5-7 days. Most patients resume regular activities immediately. Complications are uncommon and usually limited to transient inflammation, eye soreness, or temporary pressure spikes.
In India, laser trabeculoplasty costs approximately ₹10,000-₹25,000 per eye, depending on hospital type, technology used, and follow-up care.
8. Corneal Collagen Cross-Linking
Corneal collagen cross-linking (CXL) is a minimally invasive procedure that strengthens the cornea by inducing chemical bonds between collagen fibres using ultraviolet-A (UV-A) light and riboflavin (vitamin B2). This treatment halts the progression of keratoconus and other ectatic corneal disorders by increasing corneal biomechanical stability.
Diagnosis involves corneal topography, pachymetry, and visual acuity testing to detect corneal thinning, irregular curvature, and early signs of progression. Candidates typically show progressive keratoconus with a minimum corneal thickness of 400 microns.
The procedure begins with applying riboflavin eye drops and controlled UV-A irradiation. Two protocols are used: the epithelium-off technique removes the corneal epithelium to enhance drug penetration, while the epithelium-on (transepithelial) method preserves it to reduce healing time.
The full procedure takes 60-90 minutes and is performed under topical anaesthesia. Patients undergoing the epithelium-off protocol require 3-5 days for epithelial regeneration. Discomfort, photophobia, and blurred vision are common during the initial healing phase.
Studies show that cross-linking prevents keratoconus progression in over 90% of treated eyes when performed in early stages. Long-term benefits include reduced risk of corneal transplantation and stabilisation of visual function.
Post-operative care includes antibiotic and corticosteroid eye drops for 1-2 weeks and avoiding eye rubbing or water exposure. Follow-up visits assess healing and corneal response through repeat imaging.
In India, the cost of corneal cross-linking ranges from ₹25,000 to ₹45,000 per eye, depending on the protocol, technology, and hospital setting.
Rare complications include corneal haze, delayed healing, infection, or endothelial damage. The procedure does not significantly improve vision, so patients typically continue using spectacles or speciality contact lenses for correction.
9. Vitrectomy
Vitrectomy is a microsurgical procedure that treats retinal and vitreous disorders by removing the vitreous gel from the eye. This approach provides access to the retina, macula, and optic nerve to correct structural abnormalities and enable retinal repair.
Common indications include retinal detachment, macular hole, epiretinal membrane, vitreous haemorrhage, and advanced diabetic retinopathy. Diagnosis involves dilated fundus examination, optical coherence tomography (OCT), and B-scan ultrasonography to evaluate posterior segment pathology.
The procedure uses 23-, 25-, or 27-gauge instruments inserted through sclerotomies less than 0.5 mm wide. Under local anaesthesia and sedation, the vitreous is aspirated and replaced with balanced salt solution, gas, or silicone oil, depending on the condition. Additional procedures may include membrane peeling, retinal laser photocoagulation, or tamponade insertion.
Surgery typically lasts 60-120 minutes. Patients with gas or oil tamponade must maintain strict head positioning post-operatively, particularly in cases of macular hole closure or retinal reattachment.
Post-operative care includes antibiotic and anti-inflammatory eye drops for 2-4 weeks. Vision improvement may take several weeks to months, with outcomes depending on preoperative disease severity and duration.
Complications may include cataract progression, secondary retinal detachment, intraocular pressure elevation, or endophthalmitis. Overall, the risk is low with modern techniques and experienced surgeons.
In India, vitrectomy costs range from ₹40,000 to ₹1,00,000 per eye, based on hospital tier, surgical complexity, and intraocular materials used.
When Should You Visit a Doctor for Eye Problems?
You should visit an eye doctor for eye problems when symptoms suggest acute vision-threatening conditions or persistent ocular discomfort. Sudden vision loss, severe eye pain, new floaters, photopsia (light flashes), or double vision indicate potential emergencies such as retinal detachment, optic neuropathy, or intraocular haemorrhage.
Urgent evaluation is also required for chemical injuries, penetrating trauma, or embedded foreign bodies. These events carry a high risk of irreversible damage if not promptly managed.
Persistent redness, discharge, or irritation lasting more than 72 hours warrants clinical examination to exclude conjunctivitis, blepharitis, or early corneal involvement.
Adults without symptoms should undergo comprehensive eye examinations every 1-2 years. Individuals with diabetes, hypertension, or a family history of glaucoma or macular degeneration require annual screenings for early disease detection.
What is the Best Hospital for Eye Treatment?
Eye7 Eye Hospitals in Delhi-NCR, India, is the best hospital for comprehensive eye treatment in India. The network offers diagnostic and surgical care across multiple subspecialties, including cornea, retina, glaucoma, cataract, and pediatric ophthalmology.
Each centre has imaging systems, laser platforms, and microsurgical units required for advanced procedures such as vitrectomy, corneal transplantation, and refractive correction. Ophthalmologists at Eye7 Eye Hospitals provide treatment with focused subspecialty training and access to condition-specific protocols.
Patients with complex or progressive eye conditions benefit from multi-departmental coordination and structured follow-up systems integrated into Eye7 Eye Hospitals’ institutional model.