Squint Treatment in Ranchi
Comprehensive strabismus care for children and adults at Neurovision Clinic, restoring alignment, binocularity, and confidence.
What is Squint (Strabismus)?
Squint, known medically as strabismus, is an ocular misalignment where the visual axes of the two eyes are not simultaneously directed at the same object of regard. The condition can be manifest (tropia), where the deviation is constantly present under binocular viewing conditions, or latent (phoria), where the misalignment is controlled by fusion mechanisms and appears only when fusion is disrupted. Squint is classified by direction: esotropia is inward deviation, exotropia outward, hypertropia upward, and hypotropia downward. Based on constancy, it may be intermittent or constant, and by laterality, unilateral or alternating. Squint affects approximately 2–4% of the population and can present at any age. In children, the most critical consequence is the development of amblyopia, as the brain suppresses the image from the deviating eye. In adults, acquired strabismus frequently causes diplopia and impaired depth perception, significantly affecting daily activities and quality of life.
Symptoms of Squint (Strabismus)
- •Visible misalignment of one eye, which may be constant or noticed only intermittently, especially when tired; double vision (diplopia), particularly in adult-onset or decompensated squint; closing or covering one eye in bright light, a classic feature of intermittent exotropia; abnormal head posture such as tilting the head or turning the face to compensate for the deviation and achieve single vision; difficulty with depth perception, noticeable during tasks like pouring liquid, catching a ball, or climbing stairs; eye strain, frontal headaches, and a pulling sensation around the eyes during prolonged near work, typical of convergence insufficiency; and in children, poor visual behaviour, squinting one eye closed, or an asymmetric corneal light reflex noticed incidentally in photographs.
Causes & Risk Factors
- •Refractive errors, particularly uncorrected hyperopia, are the most common cause of accommodative esotropia in children. Congenital or infantile esotropia, presenting before six months of age, is idiopathic in many cases. Cranial nerve palsies involving the third (oculomotor), fourth (trochlear), or sixth (abducens) nerve can cause paralytic strabismus in both children and adults. Systemic conditions such as thyroid eye disease, myasthenia gravis, and orbital inflammatory disorders can produce restrictive or neurogenic strabismus. Trauma to the orbit with extraocular muscle entrapment or cranial nerve injury is another important cause. Decompensation of a long-standing phoria may occur with fatigue, systemic illness, or advancing age as fusional reserves weaken. Sensory deprivation in one eye from cataract, corneal opacity, or retinal disease can lead to sensory strabismus.
Diagnostic Tests
Cover-Uncover and Alternate Cover Tests
The fundamental orthoptic tests to detect and measure strabismus. Dr. Dibya Prabha performs cover testing at distance and near fixation with and without refractive correction to distinguish phorias from tropias, measure the magnitude of deviation in prism dioptres, and assess fusional control. The prism cover test provides the most accurate measurement of total deviation angle for surgical planning.
Cycloplegic Retinoscopy
In children and young adults, cycloplegic refraction using atropine or cyclopentolate drops is mandatory to uncover the full extent of hyperopic refractive error. A significant proportion of accommodative esotropia is fully corrected with spectacles alone. Dr. Dibya Prabha performs cycloplegic retinoscopy at Neurovision Clinic to ensure the most accurate refractive correction is prescribed before considering any surgical intervention.
Synoptophore Examination
This specialised instrument permits quantitative assessment of binocular function including simultaneous perception, fusion, and stereopsis. It also measures the objective and subjective angle of deviation in all nine diagnostic positions of gaze. The synoptophore is invaluable in distinguishing normal from abnormal retinal correspondence, a key factor in predicting surgical outcomes and the potential for binocularity restoration.
Treatment Approach
Dr. Dibya Prabha at Neurovision Clinic, Ranchi, follows a structured, evidence-based algorithm for strabismus management. Treatment is individualised based on patient age, type and magnitude of deviation, presence of amblyopia, binocular potential, and patient or family goals. The approach progresses from the least to the most invasive intervention.
Optical Correction
Accurate spectacle prescription, determined through cycloplegic refraction, is the cornerstone of initial management. In accommodative esotropia, full hyperopic correction can eliminate the deviation entirely. Prisms incorporated into glasses can neutralise small-to-moderate deviations and relieve diplopia in adult patients with decompensated phorias or small-angle strabismus.
Amblyopia Therapy and Orthoptics
When amblyopia coexists with squint, Dr. Dibya Prabha initiates occlusion therapy (patching of the better-seeing eye) or atropine penalisation to improve vision in the amblyopic eye. Orthoptic exercises, including convergence exercises for convergence insufficiency and fusional vergence training, are prescribed where indicated to strengthen binocular control. Computer-based vision therapy programs are integrated into the treatment regimen when appropriate.
Botulinum Toxin Injection
Botulinum toxin A (Botox) injection into an overacting extraocular muscle is a minimally invasive alternative for selected cases of esotropia and exotropia, particularly in acute sixth-nerve palsy, decompensating phorias, and as an adjunct to surgery for large deviations. The effect lasts approximately three to four months, during which alignment is temporarily restored, and some patients achieve long-term realignment through sensory adaptation.
Strabismus Surgery
When conservative measures are inadequate, strabismus surgery is performed to adjust the position and tension of the extraocular muscles. Recession weakens an overacting muscle by moving its insertion posteriorly, while resection strengthens an underacting muscle by shortening it. Dr. Dibya Prabha refers patients to an experienced strabismus surgeon in Ranchi and provides comprehensive pre-operative assessment and post-operative care, including orthoptic monitoring to ensure stable alignment and patent binocularity.
⚠️ When to See a Doctor
- !You notice that your child’s eyes appear misaligned, either constantly or intermittently, especially when the child is tired or looking into the distance.
- !Your child squints one eye closed in bright sunlight, which is a common sign of intermittent exotropia.
- !You or your child experience double vision (seeing two images of a single object), which may indicate a new-onset or decompensated strabismus.
- !There is a family history of squint or amblyopia, and you wish to schedule a screening examination for your child even if no misalignment is obvious.
- !An abnormal head tilt, face turn, or chin-up posture is observed, as children often adopt compensatory head positions to achieve single binocular vision.
- !Following head trauma, neurological illness, or orbital injury, you develop sudden misalignment of the eyes or double vision that does not resolve quickly.